* [PATCH 1/3] ATM-iphase: Adjust 11 function calls together with a variable assignment
2017-08-06 6:23 [PATCH 0/3] ATM-iphase: Adjustments for some function implementations SF Markus Elfring
@ 2017-08-06 6:26 ` SF Markus Elfring
2017-08-06 6:28 ` [PATCH 2/3] ATM-iphase: Delete five error messages for a failed memory allocation SF Markus Elfring
2017-08-06 6:30 ` [PATCH 3/3] ATM-iphase: Adjust four checks for null pointers SF Markus Elfring
2 siblings, 0 replies; 4+ messages in thread
From: SF Markus Elfring @ 2017-08-06 6:26 UTC (permalink / raw)
To: linux-atm-general, netdev, Chas Williams; +Cc: LKML, kernel-janitors
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 5 Aug 2017 21:39:06 +0200
The script "checkpatch.pl" pointed information out like the following.
ERROR: do not use assignment in if condition
Thus fix affected source code places.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/atm/iphase.c | 57 +++++++++++++++++++++++++++++++---------------------
1 file changed, 34 insertions(+), 23 deletions(-)
diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c
index fc72b763fdd7..472762f70921 100644
--- a/drivers/atm/iphase.c
+++ b/drivers/atm/iphase.c
@@ -152,7 +152,8 @@ static void ia_hack_tcq(IADEV *dev) {
*(u_short *) (dev->seg_ram + dev->host_tcq_wr) = 0;
}
else if (dev->desc_tbl[desc1 -1].timestamp) {
- if (!(iavcc_r = dev->desc_tbl[desc1 -1].iavcc)) {
+ iavcc_r = dev->desc_tbl[desc1 - 1].iavcc;
+ if (!iavcc_r) {
printk("IA: Fatal err in get_desc\n");
continue;
}
@@ -617,7 +618,8 @@ static int ia_que_tx (IADEV *iadev) {
num_desc = ia_avail_descs(iadev);
while (num_desc && (skb = skb_dequeue(&iadev->tx_backlog))) {
- if (!(vcc = ATM_SKB(skb)->vcc)) {
+ vcc = ATM_SKB(skb)->vcc;
+ if (!vcc) {
dev_kfree_skb_any(skb);
printk("ia_que_tx: Null vcc\n");
break;
@@ -1172,8 +1174,9 @@ static int rx_pkt(struct atm_dev *dev)
atomic_inc(&vcc->stats->rx_err);
goto out_free_desc;
}
-
- if (!(skb = atm_alloc_charge(vcc, len, GFP_ATOMIC))) {
+
+ skb = atm_alloc_charge(vcc, len, GFP_ATOMIC);
+ if (!skb) {
if (vcc->vci < 32)
printk("Drop control packets\n");
goto out_free_desc;
@@ -1296,7 +1299,8 @@ static void rx_dle_intr(struct atm_dev *dev)
desc = ATM_DESC(skb);
free_desc(dev, desc);
- if (!(len = skb->len))
+ len = skb->len;
+ if (!len)
{
printk("rx_dle_intr: skb len 0\n");
dev_kfree_skb_any(skb);
@@ -1882,9 +1886,9 @@ static int open_tx(struct atm_vcc *vcc)
}
vc->type = CBR;
vc->status = CRC_APPEND;
- if ((ret = ia_cbr_setup (iadev, vcc)) < 0) {
- return ret;
- }
+ ret = ia_cbr_setup(iadev, vcc);
+ if (ret < 0)
+ return ret;
} else {
printk("iadev: Non UBR, ABR and CBR traffic not supported\n");
}
@@ -2293,15 +2297,19 @@ static int reset_sar(struct atm_dev *dev)
unsigned int pci[64];
iadev = INPH_IA_DEV(dev);
- for(i=0; i<64; i++)
- if ((error = pci_read_config_dword(iadev->pci,
- i*4, &pci[i])) != PCIBIOS_SUCCESSFUL)
- return error;
+ for (i = 0; i < 64; i++) {
+ error = pci_read_config_dword(iadev->pci, i * 4, &pci[i]);
+ if (error != PCIBIOS_SUCCESSFUL)
+ return error;
+ }
+
writel(0, iadev->reg+IPHASE5575_EXT_RESET);
- for(i=0; i<64; i++)
- if ((error = pci_write_config_dword(iadev->pci,
- i*4, pci[i])) != PCIBIOS_SUCCESSFUL)
- return error;
+ for (i = 0; i < 64; i++) {
+ error = pci_write_config_dword(iadev->pci, i * 4, pci[i]);
+ if (error != PCIBIOS_SUCCESSFUL)
+ return error;
+ }
+
udelay(5);
return 0;
}
@@ -2516,9 +2524,10 @@ static int ia_start(struct atm_dev *dev)
}
/* @@@ should release IRQ on error */
/* enabling memory + master */
- if ((error = pci_write_config_word(iadev->pci,
- PCI_COMMAND,
- PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER )))
+ error = pci_write_config_word(iadev->pci,
+ PCI_COMMAND,
+ PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
+ if (error)
{
printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory+"
"master (0x%x)\n",dev->number, error);
@@ -2569,7 +2578,8 @@ static int ia_start(struct atm_dev *dev)
readl(iadev->reg+IPHASE5575_BUS_CONTROL_REG));)
phy = 0; /* resolve compiler complaint */
IF_INIT (
- if ((phy=ia_phy_get(dev,0)) == 0x30)
+ phy = ia_phy_get(dev, 0);
+ if (phy == 0x30)
printk("IA: pm5346,rev.%d\n",phy&0x0f);
else
printk("IA: utopia,rev.%0x\n",phy);)
@@ -2710,15 +2720,16 @@ static int ia_open(struct atm_vcc *vcc)
ia_vcc = kmalloc(sizeof(*ia_vcc), GFP_KERNEL);
if (!ia_vcc) return -ENOMEM;
vcc->dev_data = ia_vcc;
-
- if ((error = open_rx(vcc)))
+ error = open_rx(vcc);
+ if (error)
{
IF_EVENT(printk("iadev: error in open_rx, closing\n");)
ia_close(vcc);
return error;
}
- if ((error = open_tx(vcc)))
+ error = open_tx(vcc);
+ if (error)
{
IF_EVENT(printk("iadev: error in open_tx, closing\n");)
ia_close(vcc);
--
2.13.4
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 2/3] ATM-iphase: Delete five error messages for a failed memory allocation
2017-08-06 6:23 [PATCH 0/3] ATM-iphase: Adjustments for some function implementations SF Markus Elfring
2017-08-06 6:26 ` [PATCH 1/3] ATM-iphase: Adjust 11 function calls together with a variable assignment SF Markus Elfring
@ 2017-08-06 6:28 ` SF Markus Elfring
2017-08-06 6:30 ` [PATCH 3/3] ATM-iphase: Adjust four checks for null pointers SF Markus Elfring
2 siblings, 0 replies; 4+ messages in thread
From: SF Markus Elfring @ 2017-08-06 6:28 UTC (permalink / raw)
To: linux-atm-general, netdev, Chas Williams; +Cc: LKML, kernel-janitors
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 5 Aug 2017 22:10:41 +0200
Omit extra messages for a memory allocation failure in these functions.
This issue was detected by using the Coccinelle software.
Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/atm/iphase.c | 30 +++++++++++-------------------
1 file changed, 11 insertions(+), 19 deletions(-)
diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c
index 472762f70921..ad4c1b41ba98 100644
--- a/drivers/atm/iphase.c
+++ b/drivers/atm/iphase.c
@@ -1623,11 +1623,8 @@ static int rx_init(struct atm_dev *dev)
iadev->rx_free_desc_qhead = NULL;
iadev->rx_open = kzalloc(4 * iadev->num_vc, GFP_KERNEL);
- if (!iadev->rx_open) {
- printk(KERN_ERR DEV_LABEL "itf %d couldn't get free page\n",
- dev->number);
+ if (!iadev->rx_open)
goto err_free_dle;
- }
iadev->rxing = 1;
iadev->rx_pkt_cnt = 0;
@@ -1982,19 +1979,17 @@ static int tx_init(struct atm_dev *dev)
iadev->tx_buf = kmalloc_array(iadev->num_tx_desc,
sizeof(*iadev->tx_buf),
GFP_KERNEL);
- if (!iadev->tx_buf) {
- printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
- goto err_free_dle;
- }
+ if (!iadev->tx_buf)
+ goto err_free_dle;
+
for (i= 0; i< iadev->num_tx_desc; i++)
{
struct cpcs_trailer *cpcs;
cpcs = kmalloc(sizeof(*cpcs), GFP_KERNEL|GFP_DMA);
- if(!cpcs) {
- printk(KERN_ERR DEV_LABEL " couldn't get freepage\n");
- goto err_free_tx_bufs;
- }
+ if (!cpcs)
+ goto err_free_tx_bufs;
+
iadev->tx_buf[i].cpcs = cpcs;
iadev->tx_buf[i].dma_addr = dma_map_single(&iadev->pci->dev,
cpcs,
@@ -2004,10 +1999,8 @@ static int tx_init(struct atm_dev *dev)
iadev->desc_tbl = kmalloc_array(iadev->num_tx_desc,
sizeof(*iadev->desc_tbl),
GFP_KERNEL);
- if (!iadev->desc_tbl) {
- printk(KERN_ERR DEV_LABEL " couldn't get mem\n");
+ if (!iadev->desc_tbl)
goto err_free_all_tx_bufs;
- }
/* Communication Queues base address */
i = TX_COMP_Q * iadev->memSize;
@@ -2134,10 +2127,9 @@ static int tx_init(struct atm_dev *dev)
iadev->testTable = kmalloc_array(iadev->num_vc,
sizeof(*iadev->testTable),
GFP_KERNEL);
- if (!iadev->testTable) {
- printk("Get freepage failed\n");
- goto err_free_desc_tbl;
- }
+ if (!iadev->testTable)
+ goto err_free_desc_tbl;
+
for(i=0; i<iadev->num_vc; i++)
{
memset((caddr_t)vc, 0, sizeof(*vc));
--
2.13.4
^ permalink raw reply related [flat|nested] 4+ messages in thread* [PATCH 3/3] ATM-iphase: Adjust four checks for null pointers
2017-08-06 6:23 [PATCH 0/3] ATM-iphase: Adjustments for some function implementations SF Markus Elfring
2017-08-06 6:26 ` [PATCH 1/3] ATM-iphase: Adjust 11 function calls together with a variable assignment SF Markus Elfring
2017-08-06 6:28 ` [PATCH 2/3] ATM-iphase: Delete five error messages for a failed memory allocation SF Markus Elfring
@ 2017-08-06 6:30 ` SF Markus Elfring
2 siblings, 0 replies; 4+ messages in thread
From: SF Markus Elfring @ 2017-08-06 6:30 UTC (permalink / raw)
To: linux-atm-general, netdev, Chas Williams; +Cc: LKML, kernel-janitors
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 5 Aug 2017 22:30:04 +0200
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The script “checkpatch.pl” pointed information out like the following.
Comparison to NULL could be written !…
Thus fix the affected source code places.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/atm/iphase.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c
index ad4c1b41ba98..19782fed572a 100644
--- a/drivers/atm/iphase.c
+++ b/drivers/atm/iphase.c
@@ -101,7 +101,7 @@ static void ia_init_rtn_q (IARTN_Q *que)
static void ia_enque_head_rtn_q (IARTN_Q *que, IARTN_Q * data)
{
data->next = NULL;
- if (que->next == NULL)
+ if (!que->next)
que->next = que->tail = data;
else {
data->next = que->next;
@@ -116,7 +116,7 @@ static int ia_enque_rtn_q (IARTN_Q *que, struct desc_tbl_t data) {
return -ENOMEM;
entry->data = data;
entry->next = NULL;
- if (que->next == NULL)
+ if (!que->next)
que->next = que->tail = entry;
else {
que->tail->next = entry;
@@ -127,7 +127,7 @@ static int ia_enque_rtn_q (IARTN_Q *que, struct desc_tbl_t data) {
static IARTN_Q * ia_deque_rtn_q (IARTN_Q *que) {
IARTN_Q *tmpdata;
- if (que->next == NULL)
+ if (!que->next)
return NULL;
tmpdata = que->next;
if ( que->next == que->tail)
@@ -1321,7 +1321,7 @@ static void rx_dle_intr(struct atm_dev *dev)
goto INCR_DLE;
}
ia_vcc = INPH_IA_VCC(vcc);
- if (ia_vcc == NULL)
+ if (!ia_vcc)
{
atomic_inc(&vcc->stats->rx_err);
atm_return(vcc, skb->truesize);
--
2.13.4
^ permalink raw reply related [flat|nested] 4+ messages in thread