Re: [PATCH -next v3 2/2] media: cx231xx: Add EP5_BUF_SIZE and EP5_TIMEOUT_MS macros

[Ruan Jinjie <ruanjinjie@huawei.com>]

On 2023/9/8 20:26, Andrzej Pietrasiewicz wrote:
> Hi,
> 
> W dniu 3.09.2023 o 10:14, Jinjie Ruan pisze:
>> Define EP5_BUF_SIZE and EP5_TIMEOUT_MS macros to make the code
>> more readable.
>>
>> Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
>> Suggested-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>> ---
>> v2:
>> - Adjust the patch to be the second.
>> - Adjust the macro name.
>> ---
>>   drivers/media/usb/cx231xx/cx231xx-core.c | 4 ++--
>>   drivers/media/usb/cx231xx/cx231xx.h      | 3 +++
>>   2 files changed, 5 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/usb/cx231xx/cx231xx-core.c
>> b/drivers/media/usb/cx231xx/cx231xx-core.c
>> index 746727ea1a4c..57a8b4780a7d 100644
>> --- a/drivers/media/usb/cx231xx/cx231xx-core.c
>> +++ b/drivers/media/usb/cx231xx/cx231xx-core.c
>> @@ -751,12 +751,12 @@ int cx231xx_ep5_bulkout(struct cx231xx *dev, u8
>> *firmware, u16 size)
>>       int ret = -ENOMEM;
>>       u32 *buffer;
>>   -    buffer = kmemdup(firmware, 4096, GFP_KERNEL);
>> +    buffer = kmemdup(firmware, EP5_BUF_SIZE, GFP_KERNEL);
>>       if (buffer == NULL)
>>           return -ENOMEM;
>>         ret = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 5),
>> -            buffer, 4096, &actlen, 2000);
>> +            buffer, EP5_BUF_SIZE, &actlen, EP5_TIMEOUT_MS);
>>   
> 
> $ git grep 4096 drivers/media/usb/cx231xx | sort | wc -l
> 6
> 
> 4096 is a pretty popular constant in this driver. What about the other 4
> places?

Thank you! I'll replace them together.

> 
> Andrzej
> 
>>       if (ret)
>>           dev_err(dev->dev,
>> diff --git a/drivers/media/usb/cx231xx/cx231xx.h
>> b/drivers/media/usb/cx231xx/cx231xx.h
>> index 6929e4d97067..74339a6a2f71 100644
>> --- a/drivers/media/usb/cx231xx/cx231xx.h
>> +++ b/drivers/media/usb/cx231xx/cx231xx.h
>> @@ -120,6 +120,9 @@
>>   #define CX23417_OSC_EN   8
>>   #define CX23417_RESET    9
>>   +#define EP5_BUF_SIZE     4096
>> +#define EP5_TIMEOUT_MS   2000
>> +
>>   struct cx23417_fmt {
>>       u32   fourcc;          /* v4l2 format id */
>>       int   depth;
>