Re: [PATCH v3 13/17] arcmsr: fix ioctl data read/write error for adapter type C

Tomas Henzl
2014-08-27T12:29:42Z

On 08/27/2014 10:19 PM, Ching Huang wrote:
> On Tue, 2014-08-26 at 15:20 +0200, Tomas Henzl wrote:
>> On 08/26/2014 10:27 PM, Ching Huang wrote:
>>> On Mon, 2014-08-25 at 12:29 +0200, Tomas Henzl wrote:
>>>> On 08/25/2014 07:59 PM, Ching Huang wrote:
>>>>> On Fri, 2014-08-22 at 18:00 +0200, Tomas Henzl wrote:
>>>>>> On 08/19/2014 09:17 AM, Ching Huang wrote:
>>>>>>> From: Ching Huang <ching2048@areca.com.tw>
>>>>>>>
>>>>>>> Rewrite ioctl entry and its relate function.
>>>>>>> This patch fix ioctl data read/write error and change data I/O access from byte to Dword.
>>>>>>>
>>>>>>> Signed-off-by: Ching Huang <ching2048@areca.com.tw>
>>>>>>> ---
>>>>>>>
>>>>>>> diff -uprN a/drivers/scsi/arcmsr/arcmsr_attr.c b/drivers/scsi/arcmsr/arcmsr_attr.c
>>>>>>> --- a/drivers/scsi/arcmsr/arcmsr_attr.c 2014-02-06 17:47:24.000000000 +0800
>>>>>>> +++ b/drivers/scsi/arcmsr/arcmsr_attr.c 2014-04-29 17:10:42.000000000 +0800
>>>>>>> @@ -70,40 +70,75 @@ static ssize_t arcmsr_sysfs_iop_message_
>>>>>>> struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>>>>>>> uint8_t *pQbuffer,*ptmpQbuffer;
>>>>>>> int32_t allxfer_len = 0;
>>>>>>> + unsigned long flags;
>>>>>>>
>>>>>>> if (!capable(CAP_SYS_ADMIN))
>>>>>>> return -EACCES;
>>>>>>>
>>>>>>> /* do message unit read. */
>>>>>>> ptmpQbuffer = (uint8_t *)buf;
>>>>>>> - while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
>>>>>>> - && (allxfer_len < 1031)) {
>>>>>>> + spin_lock_irqsave(&acb->rqbuffer_lock, flags);
>>>>>>> + if (acb->rqbuf_firstindex != acb->rqbuf_lastindex) {
>>>>>> Hi - does this condition (acb->rqbuf_firstindex == acb->rqbuf_lastindex) mean we could just release
>>>>>> the spinlock and return ?
>>>>>>
>>>>> NO. We have to check the input buffer that may have message data come
>>>>> from IOP.
>>>>>>> pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
>>>>>>> - memcpy(ptmpQbuffer, pQbuffer, 1);
>>>>>>> - acb->rqbuf_firstindex++;
>>>>>>> - acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> - ptmpQbuffer++;
>>>>>>> - allxfer_len++;
>>>>>>> + if (acb->rqbuf_firstindex > acb->rqbuf_lastindex) {
>>>>>>> + if ((ARCMSR_MAX_QBUFFER - acb->rqbuf_firstindex) >= 1032) {
>>>>>>> + memcpy(ptmpQbuffer, pQbuffer, 1032);
>>>>>>> + acb->rqbuf_firstindex += 1032;
>>>>>>> + acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> + allxfer_len = 1032;
>>>>>>> + } else {
>>>>>>> + if (((ARCMSR_MAX_QBUFFER - acb->rqbuf_firstindex)
>>>>>>> + + acb->rqbuf_lastindex) > 1032) {
>>>>>>> + memcpy(ptmpQbuffer, pQbuffer,
>>>>>>> + ARCMSR_MAX_QBUFFER
>>>>>>> + - acb->rqbuf_firstindex);
>>>>>>> + ptmpQbuffer += ARCMSR_MAX_QBUFFER
>>>>>>> + - acb->rqbuf_firstindex;
>>>>>>> + memcpy(ptmpQbuffer, acb->rqbuffer, 1032
>>>>>>> + - (ARCMSR_MAX_QBUFFER -
>>>>>>> + acb->rqbuf_firstindex));
>>>>>> This code looks like you were copying some data from a ring buffer,
>>>>>> in that case - shouldn't be acb->rqbuf_lastindex used instead of firstindex?
>>>>>>
>>>>> Yes, there copying data from a ring buffer. firstindex and lastindex are
>>>>> bad name. For readability, I rename the firstindex to getIndex,
>>>>> lastindex to putIndex.
>>>> My comment is not about names, but in this path '(ARCMSR_MAX_QBUFFER - acb->rqbuf_firstindex)+ acb->rqbuf_lastindex) > 1032)'
>>>> you copy something twice and in both cases the 'firstindex' is used and never the 'lastindex'.
>>>> Is this correct?
>>> The firstindex is a get index and lastindex is a put index of a ring buffer.
>>> At here, firstindex > lastindex, so the data remain in buffer are (ARCMSR_MAX_QBUFFER - acb->rqbuf_firstindex)+ acb->rqbuf_lastindex
>> Yes, it's correct, I misinterpreted the from value with the amount of bytes to copy.
>> But well it's also still overcomplicated and I believe that a copy like this could be
>> rearranged with just few lines of code as a result - have you looked at the code I sent?
>>
>> Let's go with this patch as it is otherwise we will never end, repost is not needed because
>> of this and also not because of arcmsr_Read_iop_rqbuffer_in_DWORD.
>>
>> I'll continue with reviewing the remaining patches.
>>
>> tomas
>>
> I have test the code you sent. It works.
> I will modify the code by your idea, then send the patch.

I think that after so many repost, and because it is not a fix, wait till we get this series in
and post a new patch later.
Btw. a similar copying is in arcmsr_iop_message_xfer too, and whet you want rename the fields
in your ring buffer, please use the more usual names 'head+tail'.

Conclusion - post nothing right now, let the changes go in in a new patch.

tomash

>
> Thanks,
> Ching
>>>>>> What does the 1032 mean is that a hw. limit, actually could you explain the code
>>>>>> should do? Maybe I'm just wrong with my assumptions.
>>>>> 1032 is the API data buffer limitation.
>>>>>> Thanks,
>>>>>> Tomas
>>>>>>
>>>>>>> + acb->rqbuf_firstindex = 1032 -
>>>>>>> + (ARCMSR_MAX_QBUFFER -
>>>>>>> + acb->rqbuf_firstindex);
>>>>>>> + allxfer_len = 1032;
>>>>>>> + } else {
>>>>>>> + memcpy(ptmpQbuffer, pQbuffer,
>>>>>>> + ARCMSR_MAX_QBUFFER -
>>>>>>> + acb->rqbuf_firstindex);
>>>>>>> + ptmpQbuffer += ARCMSR_MAX_QBUFFER -
>>>>>>> + acb->rqbuf_firstindex;
>>>>>>> + memcpy(ptmpQbuffer, acb->rqbuffer,
>>>>>>> + acb->rqbuf_lastindex);
>>>>>>> + allxfer_len = ARCMSR_MAX_QBUFFER -
>>>>>>> + acb->rqbuf_firstindex +
>>>>>>> + acb->rqbuf_lastindex;
>>>>>>> + acb->rqbuf_firstindex =
>>>>>>> + acb->rqbuf_lastindex;
>>>>>>> + }
>>>>>>> + }
>>>>>>> + } else {
>>>>>>> + if ((acb->rqbuf_lastindex - acb->rqbuf_firstindex) > 1032) {
>>>>>>> + memcpy(ptmpQbuffer, pQbuffer, 1032);
>>>>>>> + acb->rqbuf_firstindex += 1032;
>>>>>>> + allxfer_len = 1032;
>>>>>>> + } else {
>>>>>>> + memcpy(ptmpQbuffer, pQbuffer, acb->rqbuf_lastindex
>>>>>>> + - acb->rqbuf_firstindex);
>>>>>>> + allxfer_len = acb->rqbuf_lastindex -
>>>>>>> + acb->rqbuf_firstindex;
>>>>>>> + acb->rqbuf_firstindex = acb->rqbuf_lastindex;
>>>>>>> + }
>>>>>>> + }
>>>>>>> }
>>>>>>> if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>>>>>>> struct QBUFFER __iomem *prbuffer;
>>>>>>> - uint8_t __iomem *iop_data;
>>>>>>> - int32_t iop_len;
>>>>>>> -
>>>>>>> acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>>>>>>> prbuffer = arcmsr_get_iop_rqbuffer(acb);
>>>>>>> - iop_data = prbuffer->data;
>>>>>>> - iop_len = readl(&prbuffer->data_len);
>>>>>>> - while (iop_len > 0) {
>>>>>>> - acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
>>>>>>> - acb->rqbuf_lastindex++;
>>>>>>> - acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> - iop_data++;
>>>>>>> - iop_len--;
>>>>>>> - }
>>>>>>> - arcmsr_iop_message_read(acb);
>>>>>>> + if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
>>>>>>> + acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
>>>>>>> }
>>>>>>> - return (allxfer_len);
>>>>>>> + spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
>>>>>>> + return allxfer_len;
>>>>>>> }
>>>>>>>
>>>>>>> static ssize_t arcmsr_sysfs_iop_message_write(struct file *filp,
>>>>>>> @@ -117,6 +152,7 @@ static ssize_t arcmsr_sysfs_iop_message_
>>>>>>> struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>>>>>>> int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
>>>>>>> uint8_t *pQbuffer, *ptmpuserbuffer;
>>>>>>> + unsigned long flags;
>>>>>>>
>>>>>>> if (!capable(CAP_SYS_ADMIN))
>>>>>>> return -EACCES;
>>>>>>> @@ -125,18 +161,19 @@ static ssize_t arcmsr_sysfs_iop_message_
>>>>>>> /* do message unit write. */
>>>>>>> ptmpuserbuffer = (uint8_t *)buf;
>>>>>>> user_len = (int32_t)count;
>>>>>>> + spin_lock_irqsave(&acb->wqbuffer_lock, flags);
>>>>>>> wqbuf_lastindex = acb->wqbuf_lastindex;
>>>>>>> wqbuf_firstindex = acb->wqbuf_firstindex;
>>>>>>> if (wqbuf_lastindex != wqbuf_firstindex) {
>>>>>>> - arcmsr_post_ioctldata2iop(acb);
>>>>>>> + arcmsr_write_ioctldata2iop(acb);
>>>>>>> + spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>>>> return 0; /*need retry*/
>>>>>>> } else {
>>>>>>> my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
>>>>>>> - &(ARCMSR_MAX_QBUFFER - 1);
>>>>>>> + &(ARCMSR_MAX_QBUFFER - 1);
>>>>>>> if (my_empty_len >= user_len) {
>>>>>>> while (user_len > 0) {
>>>>>>> - pQbuffer =
>>>>>>> - &acb->wqbuffer[acb->wqbuf_lastindex];
>>>>>>> + pQbuffer = &acb->wqbuffer[acb->wqbuf_lastindex];
>>>>>>> memcpy(pQbuffer, ptmpuserbuffer, 1);
>>>>>>> acb->wqbuf_lastindex++;
>>>>>>> acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> @@ -146,10 +183,12 @@ static ssize_t arcmsr_sysfs_iop_message_
>>>>>>> if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
>>>>>>> acb->acb_flags &=
>>>>>>> ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
>>>>>>> - arcmsr_post_ioctldata2iop(acb);
>>>>>>> + arcmsr_write_ioctldata2iop(acb);
>>>>>>> }
>>>>>>> + spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>>>> return count;
>>>>>>> } else {
>>>>>>> + spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>>>> return 0; /*need retry*/
>>>>>>> }
>>>>>>> }
>>>>>>> @@ -165,22 +204,24 @@ static ssize_t arcmsr_sysfs_iop_message_
>>>>>>> struct Scsi_Host *host = class_to_shost(dev);
>>>>>>> struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>>>>>>> uint8_t *pQbuffer;
>>>>>>> + unsigned long flags;
>>>>>>>
>>>>>>> if (!capable(CAP_SYS_ADMIN))
>>>>>>> return -EACCES;
>>>>>>>
>>>>>>> - if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>>>>>>> - acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>>>>>>> - arcmsr_iop_message_read(acb);
>>>>>>> - }
>>>>>>> + arcmsr_clear_iop2drv_rqueue_buffer(acb);
>>>>>>> acb->acb_flags |=
>>>>>>> (ACB_F_MESSAGE_WQBUFFER_CLEARED
>>>>>>> | ACB_F_MESSAGE_RQBUFFER_CLEARED
>>>>>>> | ACB_F_MESSAGE_WQBUFFER_READED);
>>>>>>> + spin_lock_irqsave(&acb->rqbuffer_lock, flags);
>>>>>>> acb->rqbuf_firstindex = 0;
>>>>>>> acb->rqbuf_lastindex = 0;
>>>>>>> + spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
>>>>>>> + spin_lock_irqsave(&acb->wqbuffer_lock, flags);
>>>>>>> acb->wqbuf_firstindex = 0;
>>>>>>> acb->wqbuf_lastindex = 0;
>>>>>>> + spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>>>> pQbuffer = acb->rqbuffer;
>>>>>>> memset(pQbuffer, 0, sizeof (struct QBUFFER));
>>>>>>> pQbuffer = acb->wqbuffer;
>>>>>>> diff -uprN a/drivers/scsi/arcmsr/arcmsr.h b/drivers/scsi/arcmsr/arcmsr.h
>>>>>>> --- a/drivers/scsi/arcmsr/arcmsr.h 2014-05-06 15:28:38.000000000 +0800
>>>>>>> +++ b/drivers/scsi/arcmsr/arcmsr.h 2014-05-06 15:28:58.000000000 +0800
>>>>>>> @@ -518,6 +518,8 @@ struct AdapterControlBlock
>>>>>>> uint32_t reg_mu_acc_handle0;
>>>>>>> spinlock_t eh_lock;
>>>>>>> spinlock_t ccblist_lock;
>>>>>>> + spinlock_t rqbuffer_lock;
>>>>>>> + spinlock_t wqbuffer_lock;
>>>>>>> union {
>>>>>>> struct MessageUnit_A __iomem *pmuA;
>>>>>>> struct MessageUnit_B *pmuB;
>>>>>>> @@ -693,8 +695,10 @@ struct SENSE_DATA
>>>>>>> #define ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE 0x01
>>>>>>> #define ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE 0x1F
>>>>>>>
>>>>>>> -extern void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *);
>>>>>>> -extern void arcmsr_iop_message_read(struct AdapterControlBlock *);
>>>>>>> +extern void arcmsr_write_ioctldata2iop(struct AdapterControlBlock *);
>>>>>>> +extern uint32_t arcmsr_Read_iop_rqbuffer_data(struct AdapterControlBlock *,
>>>>>>> + struct QBUFFER __iomem *);
>>>>>>> +extern void arcmsr_clear_iop2drv_rqueue_buffer(struct AdapterControlBlock *);
>>>>>>> extern struct QBUFFER __iomem *arcmsr_get_iop_rqbuffer(struct AdapterControlBlock *);
>>>>>>> extern struct device_attribute *arcmsr_host_attrs[];
>>>>>>> extern int arcmsr_alloc_sysfs_attr(struct AdapterControlBlock *);
>>>>>>> diff -uprN a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
>>>>>>> --- a/drivers/scsi/arcmsr/arcmsr_hba.c 2014-08-14 18:40:38.000000000 +0800
>>>>>>> +++ b/drivers/scsi/arcmsr/arcmsr_hba.c 2014-08-14 18:40:48.000000000 +0800
>>>>>>> @@ -627,6 +627,8 @@ static int arcmsr_probe(struct pci_dev *
>>>>>>> }
>>>>>>> spin_lock_init(&acb->eh_lock);
>>>>>>> spin_lock_init(&acb->ccblist_lock);
>>>>>>> + spin_lock_init(&acb->rqbuffer_lock);
>>>>>>> + spin_lock_init(&acb->wqbuffer_lock);
>>>>>>> acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
>>>>>>> ACB_F_MESSAGE_RQBUFFER_CLEARED |
>>>>>>> ACB_F_MESSAGE_WQBUFFER_READED);
>>>>>>> @@ -1423,68 +1425,174 @@ static struct QBUFFER __iomem *arcmsr_ge
>>>>>>> return pqbuffer;
>>>>>>> }
>>>>>>>
>>>>>>> -static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
>>>>>>> -{
>>>>>>> - struct QBUFFER __iomem *prbuffer;
>>>>>>> - struct QBUFFER *pQbuffer;
>>>>>>> - uint8_t __iomem *iop_data;
>>>>>>> - int32_t my_empty_len, iop_len, rqbuf_firstindex, rqbuf_lastindex;
>>>>>>> - rqbuf_lastindex = acb->rqbuf_lastindex;
>>>>>>> - rqbuf_firstindex = acb->rqbuf_firstindex;
>>>>>>> - prbuffer = arcmsr_get_iop_rqbuffer(acb);
>>>>>>> - iop_data = (uint8_t __iomem *)prbuffer->data;
>>>>>>> - iop_len = prbuffer->data_len;
>>>>>>> - my_empty_len = (rqbuf_firstindex - rqbuf_lastindex - 1) & (ARCMSR_MAX_QBUFFER - 1);
>>>>>>> +static uint32_t arcmsr_Read_iop_rqbuffer_in_DWORD(struct AdapterControlBlock *acb,
>>>>>>> + struct QBUFFER __iomem *prbuffer) {
>>>>>>>
>>>>>>> - if (my_empty_len >= iop_len)
>>>>>>> - {
>>>>>>> - while (iop_len > 0) {
>>>>>>> - pQbuffer = (struct QBUFFER *)&acb->rqbuffer[rqbuf_lastindex];
>>>>>>> - memcpy(pQbuffer, iop_data, 1);
>>>>>>> - rqbuf_lastindex++;
>>>>>>> - rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> + uint8_t *pQbuffer;
>>>>>>> + uint8_t *buf1 = NULL;
>>>>>>> + uint32_t __iomem *iop_data;
>>>>>>> + uint32_t iop_len, data_len, *buf2 = NULL;
>>>>>>> +
>>>>>>> + iop_data = (uint32_t __iomem *)prbuffer->data;
>>>>>>> + iop_len = readl(&prbuffer->data_len);
>>>>>>> + if (iop_len > 0) {
>>>>>>> + buf1 = kmalloc(128, GFP_ATOMIC);
>>>>>>> + buf2 = (uint32_t *)buf1;
>>>>>>> + if (buf1 == NULL)
>>>>>>> + return 0;
>>>>>>> + data_len = iop_len;
>>>>>>> + while (data_len >= 4) {
>>>>>>> + *buf2++ = readl(iop_data);
>>>>>>> iop_data++;
>>>>>>> - iop_len--;
>>>>>>> + data_len -= 4;
>>>>>>> }
>>>>>>> - acb->rqbuf_lastindex = rqbuf_lastindex;
>>>>>>> - arcmsr_iop_message_read(acb);
>>>>>>> + if (data_len)
>>>>>>> + *buf2 = readl(iop_data);
>>>>>>> + buf2 = (uint32_t *)buf1;
>>>>>>> + }
>>>>>>> + while (iop_len > 0) {
>>>>>>> + pQbuffer = &acb->rqbuffer[acb->rqbuf_lastindex];
>>>>>>> + *pQbuffer = *buf1;
>>>>>>> + acb->rqbuf_lastindex++;
>>>>>>> + /* if last, index number set it to 0 */
>>>>>>> + acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> + buf1++;
>>>>>>> + iop_len--;
>>>>>>> + }
>>>>>>> + if (buf2)
>>>>>> This test is not needed.
>>>>>>
>>>>>>> + kfree(buf2);
>>>>>>> + /* let IOP know data has been read */
>>>>>>> + arcmsr_iop_message_read(acb);
>>>>>>> + return 1;
>>>>>>> +}
>>>>>>> +
>>>>>>> +uint32_t
>>>>>>> +arcmsr_Read_iop_rqbuffer_data(struct AdapterControlBlock *acb,
>>>>>>> + struct QBUFFER __iomem *prbuffer) {
>>>>>>> +
>>>>>>> + uint8_t *pQbuffer;
>>>>>>> + uint8_t __iomem *iop_data;
>>>>>>> + uint32_t iop_len;
>>>>>>> +
>>>>>>> + if (acb->adapter_type & ACB_ADAPTER_TYPE_C)
>>>>>>> + return arcmsr_Read_iop_rqbuffer_in_DWORD(acb, prbuffer);
>>>>>>> + iop_data = (uint8_t __iomem *)prbuffer->data;
>>>>>>> + iop_len = readl(&prbuffer->data_len);
>>>>>>> + while (iop_len > 0) {
>>>>>>> + pQbuffer = &acb->rqbuffer[acb->rqbuf_lastindex];
>>>>>>> + *pQbuffer = readb(iop_data);
>>>>>>> + acb->rqbuf_lastindex++;
>>>>>>> + acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> + iop_data++;
>>>>>>> + iop_len--;
>>>>>>> }
>>>>>>> + arcmsr_iop_message_read(acb);
>>>>>>> + return 1;
>>>>>>> +}
>>>>>>> +
>>>>>>> +static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb)
>>>>>>> +{
>>>>>>> + unsigned long flags;
>>>>>>> + struct QBUFFER __iomem *prbuffer;
>>>>>>> + int32_t buf_empty_len;
>>>>>>>
>>>>>>> - else {
>>>>>>> + spin_lock_irqsave(&acb->rqbuffer_lock, flags);
>>>>>>> + prbuffer = arcmsr_get_iop_rqbuffer(acb);
>>>>>>> + buf_empty_len = (acb->rqbuf_lastindex - acb->rqbuf_firstindex - 1) &
>>>>>>> + (ARCMSR_MAX_QBUFFER - 1);
>>>>>>> + if (buf_empty_len >= readl(&prbuffer->data_len)) {
>>>>>>> + if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
>>>>>>> + acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
>>>>>>> + } else
>>>>>>> acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
>>>>>>> + spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
>>>>>>> +}
>>>>>>> +
>>>>>>> +static void arcmsr_write_ioctldata2iop_in_DWORD(struct AdapterControlBlock *acb)
>>>>>>> +{
>>>>>>> + uint8_t *pQbuffer;
>>>>>>> + struct QBUFFER __iomem *pwbuffer;
>>>>>>> + uint8_t *buf1 = NULL;
>>>>>>> + uint32_t __iomem *iop_data;
>>>>>>> + uint32_t allxfer_len = 0, data_len, *buf2 = NULL, data;
>>>>>>> +
>>>>>>> + if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
>>>>>>> + buf1 = kmalloc(128, GFP_ATOMIC);
>>>>>>> + buf2 = (uint32_t *)buf1;
>>>>>>> + if (buf1 == NULL)
>>>>>>> + return;
>>>>>>> +
>>>>>>> + acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
>>>>>>> + pwbuffer = arcmsr_get_iop_wqbuffer(acb);
>>>>>>> + iop_data = (uint32_t __iomem *)pwbuffer->data;
>>>>>>> + while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
>>>>>>> + && (allxfer_len < 124)) {
>>>>>>> + pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
>>>>>>> + *buf1 = *pQbuffer;
>>>>>>> + acb->wqbuf_firstindex++;
>>>>>>> + acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> + buf1++;
>>>>>>> + allxfer_len++;
>>>>>>> + }
>>>>>>> + data_len = allxfer_len;
>>>>>>> + buf1 = (uint8_t *)buf2;
>>>>>>> + while (data_len >= 4) {
>>>>>>> + data = *buf2++;
>>>>>>> + writel(data, iop_data);
>>>>>>> + iop_data++;
>>>>>>> + data_len -= 4;
>>>>>>> + }
>>>>>>> + if (data_len) {
>>>>>>> + data = *buf2;
>>>>>>> + writel(data, iop_data);
>>>>>>> + }
>>>>>>> + writel(allxfer_len, &pwbuffer->data_len);
>>>>>>> + kfree(buf1);
>>>>>>> + arcmsr_iop_message_wrote(acb);
>>>>>>> }
>>>>>>> }
>>>>>>>
>>>>>>> -static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
>>>>>>> +void
>>>>>>> +arcmsr_write_ioctldata2iop(struct AdapterControlBlock *acb)
>>>>>>> {
>>>>>>> - acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
>>>>>>> - if (acb->wqbuf_firstindex != acb->wqbuf_lastindex) {
>>>>>>> - uint8_t *pQbuffer;
>>>>>>> - struct QBUFFER __iomem *pwbuffer;
>>>>>>> - uint8_t __iomem *iop_data;
>>>>>>> - int32_t allxfer_len = 0;
>>>>>>> + uint8_t *pQbuffer;
>>>>>>> + struct QBUFFER __iomem *pwbuffer;
>>>>>>> + uint8_t __iomem *iop_data;
>>>>>>> + int32_t allxfer_len = 0;
>>>>>>>
>>>>>>> + if (acb->adapter_type & ACB_ADAPTER_TYPE_C) {
>>>>>>> + arcmsr_write_ioctldata2iop_in_DWORD(acb);
>>>>>>> + return;
>>>>>>> + }
>>>>>>> + if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
>>>>>>> acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
>>>>>>> pwbuffer = arcmsr_get_iop_wqbuffer(acb);
>>>>>>> iop_data = (uint8_t __iomem *)pwbuffer->data;
>>>>>>> -
>>>>>>> - while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex) && \
>>>>>>> - (allxfer_len < 124)) {
>>>>>>> + while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
>>>>>>> + && (allxfer_len < 124)) {
>>>>>>> pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
>>>>>>> - memcpy(iop_data, pQbuffer, 1);
>>>>>>> + writeb(*pQbuffer, iop_data);
>>>>>>> acb->wqbuf_firstindex++;
>>>>>>> acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> iop_data++;
>>>>>>> allxfer_len++;
>>>>>>> }
>>>>>>> - pwbuffer->data_len = allxfer_len;
>>>>>>> -
>>>>>>> + writel(allxfer_len, &pwbuffer->data_len);
>>>>>>> arcmsr_iop_message_wrote(acb);
>>>>>>> }
>>>>>>> +}
>>>>>>>
>>>>>>> - if (acb->wqbuf_firstindex == acb->wqbuf_lastindex) {
>>>>>>> +static void arcmsr_iop2drv_data_read_handle(struct AdapterControlBlock *acb)
>>>>>>> +{
>>>>>>> + unsigned long flags;
>>>>>>> +
>>>>>>> + spin_lock_irqsave(&acb->wqbuffer_lock, flags);
>>>>>>> + acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
>>>>>>> + if (acb->wqbuf_firstindex != acb->wqbuf_lastindex)
>>>>>>> + arcmsr_write_ioctldata2iop(acb);
>>>>>>> + if (acb->wqbuf_firstindex == acb->wqbuf_lastindex)
>>>>>>> acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
>>>>>>> - }
>>>>>>> + spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>>>> }
>>>>>>>
>>>>>>> static void arcmsr_hbaA_doorbell_isr(struct AdapterControlBlock *acb)
>>>>>>> @@ -1742,296 +1850,344 @@ static void arcmsr_iop_parking(struct Ad
>>>>>>> }
>>>>>>> }
>>>>>>>
>>>>>>> -void arcmsr_post_ioctldata2iop(struct AdapterControlBlock *acb)
>>>>>>> +
>>>>>>> +void arcmsr_clear_iop2drv_rqueue_buffer(struct AdapterControlBlock *acb)
>>>>>>> {
>>>>>>> - int32_t wqbuf_firstindex, wqbuf_lastindex;
>>>>>>> - uint8_t *pQbuffer;
>>>>>>> - struct QBUFFER __iomem *pwbuffer;
>>>>>>> - uint8_t __iomem *iop_data;
>>>>>>> - int32_t allxfer_len = 0;
>>>>>>> - pwbuffer = arcmsr_get_iop_wqbuffer(acb);
>>>>>>> - iop_data = (uint8_t __iomem *)pwbuffer->data;
>>>>>>> - if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_READED) {
>>>>>>> - acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
>>>>>>> - wqbuf_firstindex = acb->wqbuf_firstindex;
>>>>>>> - wqbuf_lastindex = acb->wqbuf_lastindex;
>>>>>>> - while ((wqbuf_firstindex != wqbuf_lastindex) && (allxfer_len < 124)) {
>>>>>>> - pQbuffer = &acb->wqbuffer[wqbuf_firstindex];
>>>>>>> - memcpy(iop_data, pQbuffer, 1);
>>>>>>> - wqbuf_firstindex++;
>>>>>>> - wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> - iop_data++;
>>>>>>> - allxfer_len++;
>>>>>>> + uint32_t i;
>>>>>>> +
>>>>>>> + if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>>>>>>> + for (i = 0; i < 15; i++) {
>>>>>>> + if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>>>>>>> + acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>>>>>>> + acb->rqbuf_firstindex = 0;
>>>>>>> + acb->rqbuf_lastindex = 0;
>>>>>>> + arcmsr_iop_message_read(acb);
>>>>>>> + mdelay(30);
>>>>>>> + } else if (acb->rqbuf_firstindex != acb->rqbuf_lastindex) {
>>>>>>> + acb->rqbuf_firstindex = 0;
>>>>>>> + acb->rqbuf_lastindex = 0;
>>>>>>> + mdelay(30);
>>>>>>> + } else
>>>>>>> + break;
>>>>>>> }
>>>>>>> - acb->wqbuf_firstindex = wqbuf_firstindex;
>>>>>>> - pwbuffer->data_len = allxfer_len;
>>>>>>> - arcmsr_iop_message_wrote(acb);
>>>>>>> }
>>>>>>> }
>>>>>>>
>>>>>>> -static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb,
>>>>>>> - struct scsi_cmnd *cmd)
>>>>>>> +static int arcmsr_iop_message_xfer(struct AdapterControlBlock *acb, struct scsi_cmnd *cmd)
>>>>>>> {
>>>>>>> - struct CMD_MESSAGE_FIELD *pcmdmessagefld;
>>>>>>> - int retvalue = 0, transfer_len = 0;
>>>>>>> char *buffer;
>>>>>>> + unsigned short use_sg;
>>>>>>> + int retvalue = 0, transfer_len = 0;
>>>>>>> + unsigned long flags;
>>>>>>> + struct CMD_MESSAGE_FIELD *pcmdmessagefld;
>>>>>>> + uint32_t controlcode = (uint32_t)cmd->cmnd[5] << 24 |
>>>>>>> + (uint32_t)cmd->cmnd[6] << 16 |
>>>>>>> + (uint32_t)cmd->cmnd[7] << 8 |
>>>>>>> + (uint32_t)cmd->cmnd[8];
>>>>>>> struct scatterlist *sg;
>>>>>>> - uint32_t controlcode = (uint32_t ) cmd->cmnd[5] << 24 |
>>>>>>> - (uint32_t ) cmd->cmnd[6] << 16 |
>>>>>>> - (uint32_t ) cmd->cmnd[7] << 8 |
>>>>>>> - (uint32_t ) cmd->cmnd[8];
>>>>>>> - /* 4 bytes: Areca io control code */
>>>>>>> +
>>>>>>> + use_sg = scsi_sg_count(cmd);
>>>>>>> sg = scsi_sglist(cmd);
>>>>>>> buffer = kmap_atomic(sg_page(sg)) + sg->offset;
>>>>>>> - if (scsi_sg_count(cmd) > 1) {
>>>>>>> + if (use_sg > 1) {
>>>>>>> retvalue = ARCMSR_MESSAGE_FAIL;
>>>>>>> goto message_out;
>>>>>>> }
>>>>>>> transfer_len += sg->length;
>>>>>>> -
>>>>>>> if (transfer_len > sizeof(struct CMD_MESSAGE_FIELD)) {
>>>>>>> retvalue = ARCMSR_MESSAGE_FAIL;
>>>>>>> + pr_info("%s: ARCMSR_MESSAGE_FAIL!\n", __func__);
>>>>>>> goto message_out;
>>>>>>> }
>>>>>>> - pcmdmessagefld = (struct CMD_MESSAGE_FIELD *) buffer;
>>>>>>> - switch(controlcode) {
>>>>>>> -
>>>>>>> + pcmdmessagefld = (struct CMD_MESSAGE_FIELD *)buffer;
>>>>>>> + switch (controlcode) {
>>>>>>> case ARCMSR_MESSAGE_READ_RQBUFFER: {
>>>>>>> unsigned char *ver_addr;
>>>>>>> uint8_t *pQbuffer, *ptmpQbuffer;
>>>>>>> - int32_t allxfer_len = 0;
>>>>>>> -
>>>>>>> + uint32_t allxfer_len = 0;
>>>>>>> ver_addr = kmalloc(1032, GFP_ATOMIC);
>>>>>>> if (!ver_addr) {
>>>>>>> retvalue = ARCMSR_MESSAGE_FAIL;
>>>>>>> + pr_info("%s: memory not enough!\n", __func__);
>>>>>>> goto message_out;
>>>>>>> }
>>>>>>> -
>>>>>>> ptmpQbuffer = ver_addr;
>>>>>>> - while ((acb->rqbuf_firstindex != acb->rqbuf_lastindex)
>>>>>>> - && (allxfer_len < 1031)) {
>>>>>>> + spin_lock_irqsave(&acb->rqbuffer_lock, flags);
>>>>>>> + if (acb->rqbuf_firstindex != acb->rqbuf_lastindex) {
>>>>>>> pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
>>>>>>> - memcpy(ptmpQbuffer, pQbuffer, 1);
>>>>>>> - acb->rqbuf_firstindex++;
>>>>>>> - acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> - ptmpQbuffer++;
>>>>>>> - allxfer_len++;
>>>>>>> + if (acb->rqbuf_firstindex > acb->rqbuf_lastindex) {
>>>>>>> + if ((ARCMSR_MAX_QBUFFER -
>>>>>>> + acb->rqbuf_firstindex) >= 1032) {
>>>>>>> + memcpy(ptmpQbuffer, pQbuffer, 1032);
>>>>>>> + acb->rqbuf_firstindex += 1032;
>>>>>>> + acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> + allxfer_len = 1032;
>>>>>>> + } else {
>>>>>>> + if (((ARCMSR_MAX_QBUFFER -
>>>>>>> + acb->rqbuf_firstindex) +
>>>>>>> + acb->rqbuf_lastindex) > 1032) {
>>>>>>> + memcpy(ptmpQbuffer,
>>>>>>> + pQbuffer, ARCMSR_MAX_QBUFFER
>>>>>>> + - acb->rqbuf_firstindex);
>>>>>>> + ptmpQbuffer +=
>>>>>>> + ARCMSR_MAX_QBUFFER -
>>>>>>> + acb->rqbuf_firstindex;
>>>>>>> + memcpy(ptmpQbuffer,
>>>>>>> + acb->rqbuffer, 1032 -
>>>>>>> + (ARCMSR_MAX_QBUFFER
>>>>>>> + - acb->rqbuf_firstindex));
>>>>>>> + acb->rqbuf_firstindex =
>>>>>>> + 1032 - (ARCMSR_MAX_QBUFFER
>>>>>>> + - acb->rqbuf_firstindex);
>>>>>>> + allxfer_len = 1032;
>>>>>>> + } else {
>>>>>>> + memcpy(ptmpQbuffer,
>>>>>>> + pQbuffer, ARCMSR_MAX_QBUFFER
>>>>>>> + - acb->rqbuf_firstindex);
>>>>>>> + ptmpQbuffer +=
>>>>>>> + ARCMSR_MAX_QBUFFER -
>>>>>>> + acb->rqbuf_firstindex;
>>>>>>> + memcpy(ptmpQbuffer,
>>>>>>> + acb->rqbuffer,
>>>>>>> + acb->rqbuf_lastindex);
>>>>>>> + allxfer_len = ARCMSR_MAX_QBUFFER
>>>>>>> + - acb->rqbuf_firstindex +
>>>>>>> + acb->rqbuf_lastindex;
>>>>>>> + acb->rqbuf_firstindex =
>>>>>>> + acb->rqbuf_lastindex;
>>>>>>> + }
>>>>>>> + }
>>>>>>> + } else {
>>>>>>> + if ((acb->rqbuf_lastindex -
>>>>>>> + acb->rqbuf_firstindex) > 1032) {
>>>>>>> + memcpy(ptmpQbuffer, pQbuffer, 1032);
>>>>>>> + acb->rqbuf_firstindex += 1032;
>>>>>>> + allxfer_len = 1032;
>>>>>>> + } else {
>>>>>>> + memcpy(ptmpQbuffer, pQbuffer,
>>>>>>> + acb->rqbuf_lastindex -
>>>>>>> + acb->rqbuf_firstindex);
>>>>>>> + allxfer_len = acb->rqbuf_lastindex
>>>>>>> + - acb->rqbuf_firstindex;
>>>>>>> + acb->rqbuf_firstindex =
>>>>>>> + acb->rqbuf_lastindex;
>>>>>>> + }
>>>>>>> + }
>>>>>>> }
>>>>>>> + memcpy(pcmdmessagefld->messagedatabuffer, ver_addr,
>>>>>>> + allxfer_len);
>>>>>>> if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>>>>>>> -
>>>>>>> struct QBUFFER __iomem *prbuffer;
>>>>>>> - uint8_t __iomem *iop_data;
>>>>>>> - int32_t iop_len;
>>>>>>> -
>>>>>>> acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>>>>>>> prbuffer = arcmsr_get_iop_rqbuffer(acb);
>>>>>>> - iop_data = prbuffer->data;
>>>>>>> - iop_len = readl(&prbuffer->data_len);
>>>>>>> - while (iop_len > 0) {
>>>>>>> - acb->rqbuffer[acb->rqbuf_lastindex] = readb(iop_data);
>>>>>>> - acb->rqbuf_lastindex++;
>>>>>>> - acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> - iop_data++;
>>>>>>> - iop_len--;
>>>>>>> - }
>>>>>>> - arcmsr_iop_message_read(acb);
>>>>>>> - }
>>>>>>> - memcpy(pcmdmessagefld->messagedatabuffer, ver_addr, allxfer_len);
>>>>>>> - pcmdmessagefld->cmdmessage.Length = allxfer_len;
>>>>>>> - if(acb->fw_flag == FW_DEADLOCK) {
>>>>>>> - pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> - }else{
>>>>>>> - pcmdmessagefld->cmdmessage.ReturnCode = ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> + if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
>>>>>>> + acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW;
>>>>>>> }
>>>>>>> + spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
>>>>>>> kfree(ver_addr);
>>>>>>> - }
>>>>>>> + pcmdmessagefld->cmdmessage.Length = allxfer_len;
>>>>>>> + if (acb->fw_flag == FW_DEADLOCK)
>>>>>>> + pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> + else
>>>>>>> + pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> break;
>>>>>>> -
>>>>>>> + }
>>>>>>> case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
>>>>>>> unsigned char *ver_addr;
>>>>>>> int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
>>>>>>> uint8_t *pQbuffer, *ptmpuserbuffer;
>>>>>>> -
>>>>>>> ver_addr = kmalloc(1032, GFP_ATOMIC);
>>>>>>> if (!ver_addr) {
>>>>>>> retvalue = ARCMSR_MESSAGE_FAIL;
>>>>>>> goto message_out;
>>>>>>> }
>>>>>>> - if(acb->fw_flag == FW_DEADLOCK) {
>>>>>>> - pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> - }else{
>>>>>>> - pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> - }
>>>>>>> ptmpuserbuffer = ver_addr;
>>>>>>> user_len = pcmdmessagefld->cmdmessage.Length;
>>>>>>> - memcpy(ptmpuserbuffer, pcmdmessagefld->messagedatabuffer, user_len);
>>>>>>> + memcpy(ptmpuserbuffer,
>>>>>>> + pcmdmessagefld->messagedatabuffer, user_len);
>>>>>>> + spin_lock_irqsave(&acb->wqbuffer_lock, flags);
>>>>>>> wqbuf_lastindex = acb->wqbuf_lastindex;
>>>>>>> wqbuf_firstindex = acb->wqbuf_firstindex;
>>>>>>> if (wqbuf_lastindex != wqbuf_firstindex) {
>>>>>>> struct SENSE_DATA *sensebuffer =
>>>>>>> (struct SENSE_DATA *)cmd->sense_buffer;
>>>>>>> - arcmsr_post_ioctldata2iop(acb);
>>>>>>> + arcmsr_write_ioctldata2iop(acb);
>>>>>>> /* has error report sensedata */
>>>>>>> - sensebuffer->ErrorCode = 0x70;
>>>>>>> + sensebuffer->ErrorCode = SCSI_SENSE_CURRENT_ERRORS;
>>>>>>> sensebuffer->SenseKey = ILLEGAL_REQUEST;
>>>>>>> sensebuffer->AdditionalSenseLength = 0x0A;
>>>>>>> sensebuffer->AdditionalSenseCode = 0x20;
>>>>>>> sensebuffer->Valid = 1;
>>>>>>> retvalue = ARCMSR_MESSAGE_FAIL;
>>>>>>> } else {
>>>>>>> - my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
>>>>>>> - &(ARCMSR_MAX_QBUFFER - 1);
>>>>>>> + my_empty_len = (wqbuf_firstindex - wqbuf_lastindex - 1)
>>>>>>> + & (ARCMSR_MAX_QBUFFER - 1);
>>>>>>> if (my_empty_len >= user_len) {
>>>>>>> while (user_len > 0) {
>>>>>>> - pQbuffer =
>>>>>>> - &acb->wqbuffer[acb->wqbuf_lastindex];
>>>>>>> - memcpy(pQbuffer, ptmpuserbuffer, 1);
>>>>>>> - acb->wqbuf_lastindex++;
>>>>>>> - acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>>>>>>> - ptmpuserbuffer++;
>>>>>>> - user_len--;
>>>>>>> + pQbuffer = &acb->wqbuffer[acb->wqbuf_lastindex];
>>>>>>> + if ((acb->wqbuf_lastindex + user_len)
>>>>>>> + > ARCMSR_MAX_QBUFFER) {
>>>>>>> + memcpy(pQbuffer, ptmpuserbuffer,
>>>>>>> + ARCMSR_MAX_QBUFFER -
>>>>>>> + acb->wqbuf_lastindex);
>>>>>>> + ptmpuserbuffer +=
>>>>>>> + (ARCMSR_MAX_QBUFFER
>>>>>>> + - acb->wqbuf_lastindex);
>>>>>>> + user_len -= (ARCMSR_MAX_QBUFFER
>>>>>>> + - acb->wqbuf_lastindex);
>>>>>>> + acb->wqbuf_lastindex = 0;
>>>>>>> + } else {
>>>>>>> + memcpy(pQbuffer, ptmpuserbuffer,
>>>>>>> + user_len);
>>>>>>> + acb->wqbuf_lastindex += user_len;
>>>>>>> + acb->wqbuf_lastindex %=
>>>>>>> + ARCMSR_MAX_QBUFFER;
>>>>>>> + user_len = 0;
>>>>>>> + }
>>>>>>> }
>>>>>>> - if (acb->acb_flags & ACB_F_MESSAGE_WQBUFFER_CLEARED) {
>>>>>>> + if (acb->acb_flags &
>>>>>>> + ACB_F_MESSAGE_WQBUFFER_CLEARED) {
>>>>>>> acb->acb_flags &=
>>>>>>> ~ACB_F_MESSAGE_WQBUFFER_CLEARED;
>>>>>>> - arcmsr_post_ioctldata2iop(acb);
>>>>>>> + arcmsr_write_ioctldata2iop(acb);
>>>>>>> }
>>>>>>> } else {
>>>>>>> - /* has error report sensedata */
>>>>>>> struct SENSE_DATA *sensebuffer =
>>>>>>> (struct SENSE_DATA *)cmd->sense_buffer;
>>>>>>> - sensebuffer->ErrorCode = 0x70;
>>>>>>> + /* has error report sensedata */
>>>>>>> + sensebuffer->ErrorCode =
>>>>>>> + SCSI_SENSE_CURRENT_ERRORS;
>>>>>>> sensebuffer->SenseKey = ILLEGAL_REQUEST;
>>>>>>> sensebuffer->AdditionalSenseLength = 0x0A;
>>>>>>> sensebuffer->AdditionalSenseCode = 0x20;
>>>>>>> sensebuffer->Valid = 1;
>>>>>>> retvalue = ARCMSR_MESSAGE_FAIL;
>>>>>>> }
>>>>>>> - }
>>>>>>> - kfree(ver_addr);
>>>>>>> }
>>>>>>> + spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>>>> + kfree(ver_addr);
>>>>>>> + if (acb->fw_flag == FW_DEADLOCK)
>>>>>>> + pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> + else
>>>>>>> + pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> break;
>>>>>>> -
>>>>>>> + }
>>>>>>> case ARCMSR_MESSAGE_CLEAR_RQBUFFER: {
>>>>>>> uint8_t *pQbuffer = acb->rqbuffer;
>>>>>>> - if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>>>>>>> - acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>>>>>>> - arcmsr_iop_message_read(acb);
>>>>>>> - }
>>>>>>> +
>>>>>>> + arcmsr_clear_iop2drv_rqueue_buffer(acb);
>>>>>>> + spin_lock_irqsave(&acb->rqbuffer_lock, flags);
>>>>>>> acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
>>>>>>> acb->rqbuf_firstindex = 0;
>>>>>>> acb->rqbuf_lastindex = 0;
>>>>>>> memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
>>>>>>> - if(acb->fw_flag == FW_DEADLOCK) {
>>>>>>> + spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
>>>>>>> + if (acb->fw_flag == FW_DEADLOCK)
>>>>>>> pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> - }else{
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> + else
>>>>>>> pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> - }
>>>>>>> - }
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> break;
>>>>>>> -
>>>>>>> + }
>>>>>>> case ARCMSR_MESSAGE_CLEAR_WQBUFFER: {
>>>>>>> uint8_t *pQbuffer = acb->wqbuffer;
>>>>>>> - if(acb->fw_flag == FW_DEADLOCK) {
>>>>>>> - pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> - }else{
>>>>>>> - pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> - }
>>>>>>> -
>>>>>>> - if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>>>>>>> - acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>>>>>>> - arcmsr_iop_message_read(acb);
>>>>>>> - }
>>>>>>> - acb->acb_flags |=
>>>>>>> - (ACB_F_MESSAGE_WQBUFFER_CLEARED |
>>>>>>> - ACB_F_MESSAGE_WQBUFFER_READED);
>>>>>>> + spin_lock_irqsave(&acb->wqbuffer_lock, flags);
>>>>>>> + acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
>>>>>>> + ACB_F_MESSAGE_WQBUFFER_READED);
>>>>>>> acb->wqbuf_firstindex = 0;
>>>>>>> acb->wqbuf_lastindex = 0;
>>>>>>> memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
>>>>>>> - }
>>>>>>> + spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>>>> + if (acb->fw_flag == FW_DEADLOCK)
>>>>>>> + pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> + else
>>>>>>> + pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> break;
>>>>>>> -
>>>>>>> + }
>>>>>>> case ARCMSR_MESSAGE_CLEAR_ALLQBUFFER: {
>>>>>>> uint8_t *pQbuffer;
>>>>>>> -
>>>>>>> - if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>>>>>>> - acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>>>>>>> - arcmsr_iop_message_read(acb);
>>>>>>> - }
>>>>>>> - acb->acb_flags |=
>>>>>>> - (ACB_F_MESSAGE_WQBUFFER_CLEARED
>>>>>>> - | ACB_F_MESSAGE_RQBUFFER_CLEARED
>>>>>>> - | ACB_F_MESSAGE_WQBUFFER_READED);
>>>>>>> + arcmsr_clear_iop2drv_rqueue_buffer(acb);
>>>>>>> + spin_lock_irqsave(&acb->rqbuffer_lock, flags);
>>>>>>> + acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
>>>>>>> acb->rqbuf_firstindex = 0;
>>>>>>> acb->rqbuf_lastindex = 0;
>>>>>>> - acb->wqbuf_firstindex = 0;
>>>>>>> - acb->wqbuf_lastindex = 0;
>>>>>>> pQbuffer = acb->rqbuffer;
>>>>>>> memset(pQbuffer, 0, sizeof(struct QBUFFER));
>>>>>>> + spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
>>>>>>> + spin_lock_irqsave(&acb->wqbuffer_lock, flags);
>>>>>>> + acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
>>>>>>> + ACB_F_MESSAGE_WQBUFFER_READED);
>>>>>>> + acb->wqbuf_firstindex = 0;
>>>>>>> + acb->wqbuf_lastindex = 0;
>>>>>>> pQbuffer = acb->wqbuffer;
>>>>>>> memset(pQbuffer, 0, sizeof(struct QBUFFER));
>>>>>>> - if(acb->fw_flag == FW_DEADLOCK) {
>>>>>>> + spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>>>> + if (acb->fw_flag == FW_DEADLOCK)
>>>>>>> pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> - }else{
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> + else
>>>>>>> pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> - }
>>>>>>> - }
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> break;
>>>>>>> -
>>>>>>> + }
>>>>>>> case ARCMSR_MESSAGE_RETURN_CODE_3F: {
>>>>>>> - if(acb->fw_flag == FW_DEADLOCK) {
>>>>>>> + if (acb->fw_flag == FW_DEADLOCK)
>>>>>>> pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> - }else{
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> + else
>>>>>>> pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_3F;
>>>>>>> - }
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_3F;
>>>>>>> break;
>>>>>>> - }
>>>>>>> + }
>>>>>>> case ARCMSR_MESSAGE_SAY_HELLO: {
>>>>>>> int8_t *hello_string = "Hello! I am ARCMSR";
>>>>>>> - if(acb->fw_flag == FW_DEADLOCK) {
>>>>>>> + if (acb->fw_flag == FW_DEADLOCK)
>>>>>>> pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> - }else{
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> + else
>>>>>>> pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> - }
>>>>>>> - memcpy(pcmdmessagefld->messagedatabuffer, hello_string
>>>>>>> - , (int16_t)strlen(hello_string));
>>>>>>> - }
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> + memcpy(pcmdmessagefld->messagedatabuffer,
>>>>>>> + hello_string, (int16_t)strlen(hello_string));
>>>>>>> break;
>>>>>>> -
>>>>>>> - case ARCMSR_MESSAGE_SAY_GOODBYE:
>>>>>>> - if(acb->fw_flag == FW_DEADLOCK) {
>>>>>>> + }
>>>>>>> + case ARCMSR_MESSAGE_SAY_GOODBYE: {
>>>>>>> + if (acb->fw_flag == FW_DEADLOCK)
>>>>>>> pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> - }
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> + else
>>>>>>> + pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> arcmsr_iop_parking(acb);
>>>>>>> break;
>>>>>>> -
>>>>>>> - case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE:
>>>>>>> - if(acb->fw_flag == FW_DEADLOCK) {
>>>>>>> + }
>>>>>>> + case ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE: {
>>>>>>> + if (acb->fw_flag == FW_DEADLOCK)
>>>>>>> pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> - ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> - }
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_BUS_HANG_ON;
>>>>>>> + else
>>>>>>> + pcmdmessagefld->cmdmessage.ReturnCode =
>>>>>>> + ARCMSR_MESSAGE_RETURNCODE_OK;
>>>>>>> arcmsr_flush_adapter_cache(acb);
>>>>>>> break;
>>>>>>> -
>>>>>>> + }
>>>>>>> default:
>>>>>>> retvalue = ARCMSR_MESSAGE_FAIL;
>>>>>>> + pr_info("%s: unknown controlcode!\n", __func__);
>>>>>>> + }
>>>>>>> +message_out:
>>>>>>> + if (use_sg) {
>>>>>>> + struct scatterlist *sg;
>>>>>>> + sg = scsi_sglist(cmd);
>>>>>>> + kunmap_atomic(buffer - sg->offset);
>>>>>>> }
>>>>>>> - message_out:
>>>>>>> - sg = scsi_sglist(cmd);
>>>>>>> - kunmap_atomic(buffer - sg->offset);
>>>>>>> return retvalue;
>>>>>>> }
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
>>>>>>> the body of a message to majordomo@vger.kernel.org
>>>>>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>>>> This patch is relative to branch:
>>>>>
>>>>> git://git.infradead.org/users/hch/scsi-queue.git arcmsr-for-3.18
>>>>>
>>>>> change log:
>>>>> 1. rename rqbuf_firstindex to rqbuf_getIndex, rqbuf_lastindex to
>>>>> rqbuf_putIndex.
>>>>> 2. rename wqbuf_firstindex to wqbuf_getIndex, wqbuf_lastindex to
>>>>> wqbuf_putIndex.
>>>>> 3. replace 1032 by define ARCMSR_API_DATA_BUFLEN
>>>>> 4. remove a NULL pointer checking before kfree.
>>>>>
>>>>> Signed-off-by: Ching Huang <ching2048@areca.com.tw>
>>>>> ---
>>>>>
>>>>> diff -uprN a/drivers/scsi/arcmsr/arcmsr_attr.c b/drivers/scsi/arcmsr/arcmsr_attr.c
>>>>> --- a/drivers/scsi/arcmsr/arcmsr_attr.c 2014-08-21 12:14:27.000000000 +0800
>>>>> +++ b/drivers/scsi/arcmsr/arcmsr_attr.c 2014-08-25 17:24:54.000000000 +0800
>>>>> @@ -78,55 +78,55 @@ static ssize_t arcmsr_sysfs_iop_message_
>>>>> /* do message unit read. */
>>>>> ptmpQbuffer = (uint8_t *)buf;
>>>>> spin_lock_irqsave(&acb->rqbuffer_lock, flags);
>>>>> - if (acb->rqbuf_firstindex != acb->rqbuf_lastindex) {
>>>>> - pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
>>>>> - if (acb->rqbuf_firstindex > acb->rqbuf_lastindex) {
>>>>> - if ((ARCMSR_MAX_QBUFFER - acb->rqbuf_firstindex) >= 1032) {
>>>>> - memcpy(ptmpQbuffer, pQbuffer, 1032);
>>>>> - acb->rqbuf_firstindex += 1032;
>>>>> - acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>>>>> - allxfer_len = 1032;
>>>>> + if (acb->rqbuf_getIndex != acb->rqbuf_putIndex) {
>>>>> + pQbuffer = &acb->rqbuffer[acb->rqbuf_getIndex];
>>>>> + if (acb->rqbuf_getIndex > acb->rqbuf_putIndex) {
>>>>> + if ((ARCMSR_MAX_QBUFFER - acb->rqbuf_getIndex) >= ARCMSR_API_DATA_BUFLEN) {
>>>>> + memcpy(ptmpQbuffer, pQbuffer, ARCMSR_API_DATA_BUFLEN);
>>>>> + acb->rqbuf_getIndex += ARCMSR_API_DATA_BUFLEN;
>>>>> + acb->rqbuf_getIndex %= ARCMSR_MAX_QBUFFER;
>>>>> + allxfer_len = ARCMSR_API_DATA_BUFLEN;
>>>>> } else {
>>>>> - if (((ARCMSR_MAX_QBUFFER - acb->rqbuf_firstindex)
>>>>> - + acb->rqbuf_lastindex) > 1032) {
>>>>> + if (((ARCMSR_MAX_QBUFFER - acb->rqbuf_getIndex)
>>>>> + + acb->rqbuf_putIndex) > ARCMSR_API_DATA_BUFLEN) {
>>>>> memcpy(ptmpQbuffer, pQbuffer,
>>>>> ARCMSR_MAX_QBUFFER
>>>>> - - acb->rqbuf_firstindex);
>>>>> + - acb->rqbuf_getIndex);
>>>>> ptmpQbuffer += ARCMSR_MAX_QBUFFER
>>>>> - - acb->rqbuf_firstindex;
>>>>> - memcpy(ptmpQbuffer, acb->rqbuffer, 1032
>>>>> + - acb->rqbuf_getIndex;
>>>>> + memcpy(ptmpQbuffer, acb->rqbuffer, ARCMSR_API_DATA_BUFLEN
>>>>> - (ARCMSR_MAX_QBUFFER -
>>>>> - acb->rqbuf_firstindex));
>>>>> - acb->rqbuf_firstindex = 1032 -
>>>>> + acb->rqbuf_getIndex));
>>>>> + acb->rqbuf_getIndex = ARCMSR_API_DATA_BUFLEN -
>>>>> (ARCMSR_MAX_QBUFFER -
>>>>> - acb->rqbuf_firstindex);
>>>>> - allxfer_len = 1032;
>>>>> + acb->rqbuf_getIndex);
>>>>> + allxfer_len = ARCMSR_API_DATA_BUFLEN;
>>>>> } else {
>>>>> memcpy(ptmpQbuffer, pQbuffer,
>>>>> ARCMSR_MAX_QBUFFER -
>>>>> - acb->rqbuf_firstindex);
>>>>> + acb->rqbuf_getIndex);
>>>>> ptmpQbuffer += ARCMSR_MAX_QBUFFER -
>>>>> - acb->rqbuf_firstindex;
>>>>> + acb->rqbuf_getIndex;
>>>>> memcpy(ptmpQbuffer, acb->rqbuffer,
>>>>> - acb->rqbuf_lastindex);
>>>>> + acb->rqbuf_putIndex);
>>>>> allxfer_len = ARCMSR_MAX_QBUFFER -
>>>>> - acb->rqbuf_firstindex +
>>>>> - acb->rqbuf_lastindex;
>>>>> - acb->rqbuf_firstindex =
>>>>> - acb->rqbuf_lastindex;
>>>>> + acb->rqbuf_getIndex +
>>>>> + acb->rqbuf_putIndex;
>>>>> + acb->rqbuf_getIndex =
>>>>> + acb->rqbuf_putIndex;
>>>>> }
>>>>> }
>>>>> } else {
>>>>> - if ((acb->rqbuf_lastindex - acb->rqbuf_firstindex) > 1032) {
>>>>> - memcpy(ptmpQbuffer, pQbuffer, 1032);
>>>>> - acb->rqbuf_firstindex += 1032;
>>>>> - allxfer_len = 1032;
>>>>> + if ((acb->rqbuf_putIndex - acb->rqbuf_getIndex) > ARCMSR_API_DATA_BUFLEN) {
>>>>> + memcpy(ptmpQbuffer, pQbuffer, ARCMSR_API_DATA_BUFLEN);
>>>>> + acb->rqbuf_getIndex += ARCMSR_API_DATA_BUFLEN;
>>>>> + allxfer_len = ARCMSR_API_DATA_BUFLEN;
>>>>> } else {
>>>>> - memcpy(ptmpQbuffer, pQbuffer, acb->rqbuf_lastindex
>>>>> - - acb->rqbuf_firstindex);
>>>>> - allxfer_len = acb->rqbuf_lastindex -
>>>>> - acb->rqbuf_firstindex;
>>>>> - acb->rqbuf_firstindex = acb->rqbuf_lastindex;
>>>>> + memcpy(ptmpQbuffer, pQbuffer, acb->rqbuf_putIndex
>>>>> + - acb->rqbuf_getIndex);
>>>>> + allxfer_len = acb->rqbuf_putIndex -
>>>>> + acb->rqbuf_getIndex;
>>>>> + acb->rqbuf_getIndex = acb->rqbuf_putIndex;
>>>>> }
>>>>> }
>>>>> }
>>>>> @@ -150,33 +150,33 @@ static ssize_t arcmsr_sysfs_iop_message_
>>>>> struct device *dev = container_of(kobj,struct device,kobj);
>>>>> struct Scsi_Host *host = class_to_shost(dev);
>>>>> struct AdapterControlBlock *acb = (struct AdapterControlBlock *) host->hostdata;
>>>>> - int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
>>>>> + int32_t my_empty_len, user_len, wqbuf_getIndex, wqbuf_putIndex;
>>>>> uint8_t *pQbuffer, *ptmpuserbuffer;
>>>>> unsigned long flags;
>>>>>
>>>>> if (!capable(CAP_SYS_ADMIN))
>>>>> return -EACCES;
>>>>> - if (count > 1032)
>>>>> + if (count > ARCMSR_API_DATA_BUFLEN)
>>>>> return -EINVAL;
>>>>> /* do message unit write. */
>>>>> ptmpuserbuffer = (uint8_t *)buf;
>>>>> user_len = (int32_t)count;
>>>>> spin_lock_irqsave(&acb->wqbuffer_lock, flags);
>>>>> - wqbuf_lastindex = acb->wqbuf_lastindex;
>>>>> - wqbuf_firstindex = acb->wqbuf_firstindex;
>>>>> - if (wqbuf_lastindex != wqbuf_firstindex) {
>>>>> + wqbuf_putIndex = acb->wqbuf_putIndex;
>>>>> + wqbuf_getIndex = acb->wqbuf_getIndex;
>>>>> + if (wqbuf_putIndex != wqbuf_getIndex) {
>>>>> arcmsr_write_ioctldata2iop(acb);
>>>>> spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>> return 0; /*need retry*/
>>>>> } else {
>>>>> - my_empty_len = (wqbuf_firstindex-wqbuf_lastindex - 1)
>>>>> + my_empty_len = (wqbuf_getIndex-wqbuf_putIndex - 1)
>>>>> &(ARCMSR_MAX_QBUFFER - 1);
>>>>> if (my_empty_len >= user_len) {
>>>>> while (user_len > 0) {
>>>>> - pQbuffer = &acb->wqbuffer[acb->wqbuf_lastindex];
>>>>> + pQbuffer = &acb->wqbuffer[acb->wqbuf_putIndex];
>>>>> memcpy(pQbuffer, ptmpuserbuffer, 1);
>>>>> - acb->wqbuf_lastindex++;
>>>>> - acb->wqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>>>>> + acb->wqbuf_putIndex++;
>>>>> + acb->wqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
>>>>> ptmpuserbuffer++;
>>>>> user_len--;
>>>>> }
>>>>> @@ -215,12 +215,12 @@ static ssize_t arcmsr_sysfs_iop_message_
>>>>> | ACB_F_MESSAGE_RQBUFFER_CLEARED
>>>>> | ACB_F_MESSAGE_WQBUFFER_READED);
>>>>> spin_lock_irqsave(&acb->rqbuffer_lock, flags);
>>>>> - acb->rqbuf_firstindex = 0;
>>>>> - acb->rqbuf_lastindex = 0;
>>>>> + acb->rqbuf_getIndex = 0;
>>>>> + acb->rqbuf_putIndex = 0;
>>>>> spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
>>>>> spin_lock_irqsave(&acb->wqbuffer_lock, flags);
>>>>> - acb->wqbuf_firstindex = 0;
>>>>> - acb->wqbuf_lastindex = 0;
>>>>> + acb->wqbuf_getIndex = 0;
>>>>> + acb->wqbuf_putIndex = 0;
>>>>> spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>> pQbuffer = acb->rqbuffer;
>>>>> memset(pQbuffer, 0, sizeof (struct QBUFFER));
>>>>> @@ -234,7 +234,7 @@ static struct bin_attribute arcmsr_sysfs
>>>>> .name = "mu_read",
>>>>> .mode = S_IRUSR ,
>>>>> },
>>>>> - .size = 1032,
>>>>> + .size = ARCMSR_API_DATA_BUFLEN,
>>>>> .read = arcmsr_sysfs_iop_message_read,
>>>>> };
>>>>>
>>>>> @@ -243,7 +243,7 @@ static struct bin_attribute arcmsr_sysfs
>>>>> .name = "mu_write",
>>>>> .mode = S_IWUSR,
>>>>> },
>>>>> - .size = 1032,
>>>>> + .size = ARCMSR_API_DATA_BUFLEN,
>>>>> .write = arcmsr_sysfs_iop_message_write,
>>>>> };
>>>>>
>>>>> diff -uprN a/drivers/scsi/arcmsr/arcmsr.h b/drivers/scsi/arcmsr/arcmsr.h
>>>>> --- a/drivers/scsi/arcmsr/arcmsr.h 2014-08-21 12:14:27.000000000 +0800
>>>>> +++ b/drivers/scsi/arcmsr/arcmsr.h 2014-08-25 17:25:20.000000000 +0800
>>>>> @@ -107,10 +107,11 @@ struct CMD_MESSAGE
>>>>> ** IOP Message Transfer Data for user space
>>>>> *******************************************************************************
>>>>> */
>>>>> +#define ARCMSR_API_DATA_BUFLEN 1032
>>>>> struct CMD_MESSAGE_FIELD
>>>>> {
>>>>> struct CMD_MESSAGE cmdmessage;
>>>>> - uint8_t messagedatabuffer[1032];
>>>>> + uint8_t messagedatabuffer[ARCMSR_API_DATA_BUFLEN];
>>>>> };
>>>>> /* IOP message transfer */
>>>>> #define ARCMSR_MESSAGE_FAIL 0x0001
>>>>> @@ -678,15 +679,15 @@ struct AdapterControlBlock
>>>>> unsigned int uncache_size;
>>>>> uint8_t rqbuffer[ARCMSR_MAX_QBUFFER];
>>>>> /* data collection buffer for read from 80331 */
>>>>> - int32_t rqbuf_firstindex;
>>>>> + int32_t rqbuf_getIndex;
>>>>> /* first of read buffer */
>>>>> - int32_t rqbuf_lastindex;
>>>>> + int32_t rqbuf_putIndex;
>>>>> /* last of read buffer */
>>>>> uint8_t wqbuffer[ARCMSR_MAX_QBUFFER];
>>>>> /* data collection buffer for write to 80331 */
>>>>> - int32_t wqbuf_firstindex;
>>>>> + int32_t wqbuf_getIndex;
>>>>> /* first of write buffer */
>>>>> - int32_t wqbuf_lastindex;
>>>>> + int32_t wqbuf_putIndex;
>>>>> /* last of write buffer */
>>>>> uint8_t devstate[ARCMSR_MAX_TARGETID][ARCMSR_MAX_TARGETLUN];
>>>>> /* id0 ..... id15, lun0...lun7 */
>>>>> diff -uprN a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
>>>>> --- a/drivers/scsi/arcmsr/arcmsr_hba.c 2014-08-21 12:14:27.000000000 +0800
>>>>> +++ b/drivers/scsi/arcmsr/arcmsr_hba.c 2014-08-25 17:25:14.000000000 +0800
>>>>> @@ -1724,16 +1724,15 @@ arcmsr_Read_iop_rqbuffer_in_DWORD(struct
>>>>> buf2 = (uint32_t *)buf1;
>>>>> }
>>>>> while (iop_len > 0) {
>>>>> - pQbuffer = &acb->rqbuffer[acb->rqbuf_lastindex];
>>>>> + pQbuffer = &acb->rqbuffer[acb->rqbuf_putIndex];
>>>>> *pQbuffer = *buf1;
>>>>> - acb->rqbuf_lastindex++;
>>>>> + acb->rqbuf_putIndex++;
>>>>> /* if last, index number set it to 0 */
>>>>> - acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>>>>> + acb->rqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
>>>>> buf1++;
>>>>> iop_len--;
>>>>> }
>>>>> - if (buf2)
>>>>> - kfree(buf2);
>>>>> + kfree(buf2);
>>>>> /* let IOP know data has been read */
>>>>> arcmsr_iop_message_read(acb);
>>>>> return 1;
>>>>> @@ -1752,10 +1751,10 @@ arcmsr_Read_iop_rqbuffer_data(struct Ada
>>>>> iop_data = (uint8_t __iomem *)prbuffer->data;
>>>>> iop_len = readl(&prbuffer->data_len);
>>>>> while (iop_len > 0) {
>>>>> - pQbuffer = &acb->rqbuffer[acb->rqbuf_lastindex];
>>>>> + pQbuffer = &acb->rqbuffer[acb->rqbuf_putIndex];
>>>>> *pQbuffer = readb(iop_data);
>>>>> - acb->rqbuf_lastindex++;
>>>>> - acb->rqbuf_lastindex %= ARCMSR_MAX_QBUFFER;
>>>>> + acb->rqbuf_putIndex++;
>>>>> + acb->rqbuf_putIndex %= ARCMSR_MAX_QBUFFER;
>>>>> iop_data++;
>>>>> iop_len--;
>>>>> }
>>>>> @@ -1771,7 +1770,7 @@ static void arcmsr_iop2drv_data_wrote_ha
>>>>>
>>>>> spin_lock_irqsave(&acb->rqbuffer_lock, flags);
>>>>> prbuffer = arcmsr_get_iop_rqbuffer(acb);
>>>>> - buf_empty_len = (acb->rqbuf_lastindex - acb->rqbuf_firstindex - 1) &
>>>>> + buf_empty_len = (acb->rqbuf_putIndex - acb->rqbuf_getIndex - 1) &
>>>>> (ARCMSR_MAX_QBUFFER - 1);
>>>>> if (buf_empty_len >= readl(&prbuffer->data_len)) {
>>>>> if (arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0)
>>>>> @@ -1798,12 +1797,12 @@ static void arcmsr_write_ioctldata2iop_i
>>>>> acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
>>>>> pwbuffer = arcmsr_get_iop_wqbuffer(acb);
>>>>> iop_data = (uint32_t __iomem *)pwbuffer->data;
>>>>> - while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
>>>>> + while ((acb->wqbuf_getIndex != acb->wqbuf_putIndex)
>>>>> && (allxfer_len < 124)) {
>>>>> - pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
>>>>> + pQbuffer = &acb->wqbuffer[acb->wqbuf_getIndex];
>>>>> *buf1 = *pQbuffer;
>>>>> - acb->wqbuf_firstindex++;
>>>>> - acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>>>>> + acb->wqbuf_getIndex++;
>>>>> + acb->wqbuf_getIndex %= ARCMSR_MAX_QBUFFER;
>>>>> buf1++;
>>>>> allxfer_len++;
>>>>> }
>>>>> @@ -1841,12 +1840,12 @@ arcmsr_write_ioctldata2iop(struct Adapte
>>>>> acb->acb_flags &= (~ACB_F_MESSAGE_WQBUFFER_READED);
>>>>> pwbuffer = arcmsr_get_iop_wqbuffer(acb);
>>>>> iop_data = (uint8_t __iomem *)pwbuffer->data;
>>>>> - while ((acb->wqbuf_firstindex != acb->wqbuf_lastindex)
>>>>> + while ((acb->wqbuf_getIndex != acb->wqbuf_putIndex)
>>>>> && (allxfer_len < 124)) {
>>>>> - pQbuffer = &acb->wqbuffer[acb->wqbuf_firstindex];
>>>>> + pQbuffer = &acb->wqbuffer[acb->wqbuf_getIndex];
>>>>> writeb(*pQbuffer, iop_data);
>>>>> - acb->wqbuf_firstindex++;
>>>>> - acb->wqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>>>>> + acb->wqbuf_getIndex++;
>>>>> + acb->wqbuf_getIndex %= ARCMSR_MAX_QBUFFER;
>>>>> iop_data++;
>>>>> allxfer_len++;
>>>>> }
>>>>> @@ -1861,9 +1860,9 @@ static void arcmsr_iop2drv_data_read_han
>>>>>
>>>>> spin_lock_irqsave(&acb->wqbuffer_lock, flags);
>>>>> acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_READED;
>>>>> - if (acb->wqbuf_firstindex != acb->wqbuf_lastindex)
>>>>> + if (acb->wqbuf_getIndex != acb->wqbuf_putIndex)
>>>>> arcmsr_write_ioctldata2iop(acb);
>>>>> - if (acb->wqbuf_firstindex == acb->wqbuf_lastindex)
>>>>> + if (acb->wqbuf_getIndex == acb->wqbuf_putIndex)
>>>>> acb->acb_flags |= ACB_F_MESSAGE_WQBUFFER_CLEARED;
>>>>> spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>> }
>>>>> @@ -2243,14 +2242,14 @@ void arcmsr_clear_iop2drv_rqueue_buffer(
>>>>> for (i = 0; i < 15; i++) {
>>>>> if (acb->acb_flags & ACB_F_IOPDATA_OVERFLOW) {
>>>>> acb->acb_flags &= ~ACB_F_IOPDATA_OVERFLOW;
>>>>> - acb->rqbuf_firstindex = 0;
>>>>> - acb->rqbuf_lastindex = 0;
>>>>> + acb->rqbuf_getIndex = 0;
>>>>> + acb->rqbuf_putIndex = 0;
>>>>> arcmsr_iop_message_read(acb);
>>>>> mdelay(30);
>>>>> - } else if (acb->rqbuf_firstindex !=
>>>>> - acb->rqbuf_lastindex) {
>>>>> - acb->rqbuf_firstindex = 0;
>>>>> - acb->rqbuf_lastindex = 0;
>>>>> + } else if (acb->rqbuf_getIndex !=
>>>>> + acb->rqbuf_putIndex) {
>>>>> + acb->rqbuf_getIndex = 0;
>>>>> + acb->rqbuf_putIndex = 0;
>>>>> mdelay(30);
>>>>> } else
>>>>> break;
>>>>> @@ -2291,7 +2290,7 @@ static int arcmsr_iop_message_xfer(struc
>>>>> unsigned char *ver_addr;
>>>>> uint8_t *pQbuffer, *ptmpQbuffer;
>>>>> uint32_t allxfer_len = 0;
>>>>> - ver_addr = kmalloc(1032, GFP_ATOMIC);
>>>>> + ver_addr = kmalloc(ARCMSR_API_DATA_BUFLEN, GFP_ATOMIC);
>>>>> if (!ver_addr) {
>>>>> retvalue = ARCMSR_MESSAGE_FAIL;
>>>>> pr_info("%s: memory not enough!\n", __func__);
>>>>> @@ -2299,64 +2298,64 @@ static int arcmsr_iop_message_xfer(struc
>>>>> }
>>>>> ptmpQbuffer = ver_addr;
>>>>> spin_lock_irqsave(&acb->rqbuffer_lock, flags);
>>>>> - if (acb->rqbuf_firstindex != acb->rqbuf_lastindex) {
>>>>> - pQbuffer = &acb->rqbuffer[acb->rqbuf_firstindex];
>>>>> - if (acb->rqbuf_firstindex > acb->rqbuf_lastindex) {
>>>>> + if (acb->rqbuf_getIndex != acb->rqbuf_putIndex) {
>>>>> + pQbuffer = &acb->rqbuffer[acb->rqbuf_getIndex];
>>>>> + if (acb->rqbuf_getIndex > acb->rqbuf_putIndex) {
>>>>> if ((ARCMSR_MAX_QBUFFER -
>>>>> - acb->rqbuf_firstindex) >= 1032) {
>>>>> - memcpy(ptmpQbuffer, pQbuffer, 1032);
>>>>> - acb->rqbuf_firstindex += 1032;
>>>>> - acb->rqbuf_firstindex %= ARCMSR_MAX_QBUFFER;
>>>>> - allxfer_len = 1032;
>>>>> + acb->rqbuf_getIndex) >= ARCMSR_API_DATA_BUFLEN) {
>>>>> + memcpy(ptmpQbuffer, pQbuffer, ARCMSR_API_DATA_BUFLEN);
>>>>> + acb->rqbuf_getIndex += ARCMSR_API_DATA_BUFLEN;
>>>>> + acb->rqbuf_getIndex %= ARCMSR_MAX_QBUFFER;
>>>>> + allxfer_len = ARCMSR_API_DATA_BUFLEN;
>>>>> } else {
>>>>> if (((ARCMSR_MAX_QBUFFER -
>>>>> - acb->rqbuf_firstindex) +
>>>>> - acb->rqbuf_lastindex) > 1032) {
>>>>> + acb->rqbuf_getIndex) +
>>>>> + acb->rqbuf_putIndex) > ARCMSR_API_DATA_BUFLEN) {
>>>>> memcpy(ptmpQbuffer,
>>>>> pQbuffer, ARCMSR_MAX_QBUFFER
>>>>> - - acb->rqbuf_firstindex);
>>>>> + - acb->rqbuf_getIndex);
>>>>> ptmpQbuffer +=
>>>>> ARCMSR_MAX_QBUFFER -
>>>>> - acb->rqbuf_firstindex;
>>>>> + acb->rqbuf_getIndex;
>>>>> memcpy(ptmpQbuffer,
>>>>> - acb->rqbuffer, 1032 -
>>>>> + acb->rqbuffer, ARCMSR_API_DATA_BUFLEN -
>>>>> (ARCMSR_MAX_QBUFFER
>>>>> - - acb->rqbuf_firstindex));
>>>>> - acb->rqbuf_firstindex =
>>>>> - 1032 - (ARCMSR_MAX_QBUFFER
>>>>> - - acb->rqbuf_firstindex);
>>>>> - allxfer_len = 1032;
>>>>> + - acb->rqbuf_getIndex));
>>>>> + acb->rqbuf_getIndex =
>>>>> + ARCMSR_API_DATA_BUFLEN - (ARCMSR_MAX_QBUFFER
>>>>> + - acb->rqbuf_getIndex);
>>>>> + allxfer_len = ARCMSR_API_DATA_BUFLEN;
>>>>> } else {
>>>>> memcpy(ptmpQbuffer,
>>>>> pQbuffer, ARCMSR_MAX_QBUFFER
>>>>> - - acb->rqbuf_firstindex);
>>>>> + - acb->rqbuf_getIndex);
>>>>> ptmpQbuffer +=
>>>>> ARCMSR_MAX_QBUFFER -
>>>>> - acb->rqbuf_firstindex;
>>>>> + acb->rqbuf_getIndex;
>>>>> memcpy(ptmpQbuffer,
>>>>> acb->rqbuffer,
>>>>> - acb->rqbuf_lastindex);
>>>>> + acb->rqbuf_putIndex);
>>>>> allxfer_len = ARCMSR_MAX_QBUFFER
>>>>> - - acb->rqbuf_firstindex +
>>>>> - acb->rqbuf_lastindex;
>>>>> - acb->rqbuf_firstindex =
>>>>> - acb->rqbuf_lastindex;
>>>>> + - acb->rqbuf_getIndex +
>>>>> + acb->rqbuf_putIndex;
>>>>> + acb->rqbuf_getIndex =
>>>>> + acb->rqbuf_putIndex;
>>>>> }
>>>>> }
>>>>> } else {
>>>>> - if ((acb->rqbuf_lastindex -
>>>>> - acb->rqbuf_firstindex) > 1032) {
>>>>> - memcpy(ptmpQbuffer, pQbuffer, 1032);
>>>>> - acb->rqbuf_firstindex += 1032;
>>>>> - allxfer_len = 1032;
>>>>> + if ((acb->rqbuf_putIndex -
>>>>> + acb->rqbuf_getIndex) > ARCMSR_API_DATA_BUFLEN) {
>>>>> + memcpy(ptmpQbuffer, pQbuffer, ARCMSR_API_DATA_BUFLEN);
>>>>> + acb->rqbuf_getIndex += ARCMSR_API_DATA_BUFLEN;
>>>>> + allxfer_len = ARCMSR_API_DATA_BUFLEN;
>>>>> } else {
>>>>> memcpy(ptmpQbuffer, pQbuffer,
>>>>> - acb->rqbuf_lastindex -
>>>>> - acb->rqbuf_firstindex);
>>>>> - allxfer_len = acb->rqbuf_lastindex
>>>>> - - acb->rqbuf_firstindex;
>>>>> - acb->rqbuf_firstindex =
>>>>> - acb->rqbuf_lastindex;
>>>>> + acb->rqbuf_putIndex -
>>>>> + acb->rqbuf_getIndex);
>>>>> + allxfer_len = acb->rqbuf_putIndex
>>>>> + - acb->rqbuf_getIndex;
>>>>> + acb->rqbuf_getIndex =
>>>>> + acb->rqbuf_putIndex;
>>>>> }
>>>>> }
>>>>> }
>>>>> @@ -2382,9 +2381,9 @@ static int arcmsr_iop_message_xfer(struc
>>>>> }
>>>>> case ARCMSR_MESSAGE_WRITE_WQBUFFER: {
>>>>> unsigned char *ver_addr;
>>>>> - int32_t my_empty_len, user_len, wqbuf_firstindex, wqbuf_lastindex;
>>>>> + int32_t my_empty_len, user_len, wqbuf_getIndex, wqbuf_putIndex;
>>>>> uint8_t *pQbuffer, *ptmpuserbuffer;
>>>>> - ver_addr = kmalloc(1032, GFP_ATOMIC);
>>>>> + ver_addr = kmalloc(ARCMSR_API_DATA_BUFLEN, GFP_ATOMIC);
>>>>> if (!ver_addr) {
>>>>> retvalue = ARCMSR_MESSAGE_FAIL;
>>>>> goto message_out;
>>>>> @@ -2394,9 +2393,9 @@ static int arcmsr_iop_message_xfer(struc
>>>>> memcpy(ptmpuserbuffer,
>>>>> pcmdmessagefld->messagedatabuffer, user_len);
>>>>> spin_lock_irqsave(&acb->wqbuffer_lock, flags);
>>>>> - wqbuf_lastindex = acb->wqbuf_lastindex;
>>>>> - wqbuf_firstindex = acb->wqbuf_firstindex;
>>>>> - if (wqbuf_lastindex != wqbuf_firstindex) {
>>>>> + wqbuf_putIndex = acb->wqbuf_putIndex;
>>>>> + wqbuf_getIndex = acb->wqbuf_getIndex;
>>>>> + if (wqbuf_putIndex != wqbuf_getIndex) {
>>>>> struct SENSE_DATA *sensebuffer =
>>>>> (struct SENSE_DATA *)cmd->sense_buffer;
>>>>> arcmsr_write_ioctldata2iop(acb);
>>>>> @@ -2408,27 +2407,27 @@ static int arcmsr_iop_message_xfer(struc
>>>>> sensebuffer->Valid = 1;
>>>>> retvalue = ARCMSR_MESSAGE_FAIL;
>>>>> } else {
>>>>> - my_empty_len = (wqbuf_firstindex - wqbuf_lastindex - 1)
>>>>> + my_empty_len = (wqbuf_getIndex - wqbuf_putIndex - 1)
>>>>> & (ARCMSR_MAX_QBUFFER - 1);
>>>>> if (my_empty_len >= user_len) {
>>>>> while (user_len > 0) {
>>>>> - pQbuffer = &acb->wqbuffer[acb->wqbuf_lastindex];
>>>>> - if ((acb->wqbuf_lastindex + user_len)
>>>>> + pQbuffer = &acb->wqbuffer[acb->wqbuf_putIndex];
>>>>> + if ((acb->wqbuf_putIndex + user_len)
>>>>> > ARCMSR_MAX_QBUFFER) {
>>>>> memcpy(pQbuffer, ptmpuserbuffer,
>>>>> ARCMSR_MAX_QBUFFER -
>>>>> - acb->wqbuf_lastindex);
>>>>> + acb->wqbuf_putIndex);
>>>>> ptmpuserbuffer +=
>>>>> (ARCMSR_MAX_QBUFFER
>>>>> - - acb->wqbuf_lastindex);
>>>>> + - acb->wqbuf_putIndex);
>>>>> user_len -= (ARCMSR_MAX_QBUFFER
>>>>> - - acb->wqbuf_lastindex);
>>>>> - acb->wqbuf_lastindex = 0;
>>>>> + - acb->wqbuf_putIndex);
>>>>> + acb->wqbuf_putIndex = 0;
>>>>> } else {
>>>>> memcpy(pQbuffer, ptmpuserbuffer,
>>>>> user_len);
>>>>> - acb->wqbuf_lastindex += user_len;
>>>>> - acb->wqbuf_lastindex %=
>>>>> + acb->wqbuf_putIndex += user_len;
>>>>> + acb->wqbuf_putIndex %=
>>>>> ARCMSR_MAX_QBUFFER;
>>>>> user_len = 0;
>>>>> }
>>>>> @@ -2468,8 +2467,8 @@ static int arcmsr_iop_message_xfer(struc
>>>>> arcmsr_clear_iop2drv_rqueue_buffer(acb);
>>>>> spin_lock_irqsave(&acb->rqbuffer_lock, flags);
>>>>> acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
>>>>> - acb->rqbuf_firstindex = 0;
>>>>> - acb->rqbuf_lastindex = 0;
>>>>> + acb->rqbuf_getIndex = 0;
>>>>> + acb->rqbuf_putIndex = 0;
>>>>> memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
>>>>> spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
>>>>> if (acb->fw_flag == FW_DEADLOCK)
>>>>> @@ -2485,8 +2484,8 @@ static int arcmsr_iop_message_xfer(struc
>>>>> spin_lock_irqsave(&acb->wqbuffer_lock, flags);
>>>>> acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
>>>>> ACB_F_MESSAGE_WQBUFFER_READED);
>>>>> - acb->wqbuf_firstindex = 0;
>>>>> - acb->wqbuf_lastindex = 0;
>>>>> + acb->wqbuf_getIndex = 0;
>>>>> + acb->wqbuf_putIndex = 0;
>>>>> memset(pQbuffer, 0, ARCMSR_MAX_QBUFFER);
>>>>> spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>> if (acb->fw_flag == FW_DEADLOCK)
>>>>> @@ -2502,16 +2501,16 @@ static int arcmsr_iop_message_xfer(struc
>>>>> arcmsr_clear_iop2drv_rqueue_buffer(acb);
>>>>> spin_lock_irqsave(&acb->rqbuffer_lock, flags);
>>>>> acb->acb_flags |= ACB_F_MESSAGE_RQBUFFER_CLEARED;
>>>>> - acb->rqbuf_firstindex = 0;
>>>>> - acb->rqbuf_lastindex = 0;
>>>>> + acb->rqbuf_getIndex = 0;
>>>>> + acb->rqbuf_putIndex = 0;
>>>>> pQbuffer = acb->rqbuffer;
>>>>> memset(pQbuffer, 0, sizeof(struct QBUFFER));
>>>>> spin_unlock_irqrestore(&acb->rqbuffer_lock, flags);
>>>>> spin_lock_irqsave(&acb->wqbuffer_lock, flags);
>>>>> acb->acb_flags |= (ACB_F_MESSAGE_WQBUFFER_CLEARED |
>>>>> ACB_F_MESSAGE_WQBUFFER_READED);
>>>>> - acb->wqbuf_firstindex = 0;
>>>>> - acb->wqbuf_lastindex = 0;
>>>>> + acb->wqbuf_getIndex = 0;
>>>>> + acb->wqbuf_putIndex = 0;
>>>>> pQbuffer = acb->wqbuffer;
>>>>> memset(pQbuffer, 0, sizeof(struct QBUFFER));
>>>>> spin_unlock_irqrestore(&acb->wqbuffer_lock, flags);
>>>>>
>>>>>
>>>>>
>>>>> --
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