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Date: Sat, 2 Nov 2013 19:17:49 +0530
From: Govindarajulu Varadarajan <govindarajulu90@...il.com>
To: davem@...emloft.net, gregkh@...uxfoundation.org,
linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
schwidefsky@...ibm.com, linville@...driver.com,
linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
IvDoorn@...il.com, sbhatewara@...are.com, samuel@...tiz.org,
chas@....nrl.navy.mil, roland@...nel.org, isdn@...ux-pingi.de,
jcliburn@...il.com, benve@...co.com, ssujith@...co.com,
jeffrey.t.kirsher@...el.com, jesse.brandeburg@...el.com,
shahed.shaikh@...gic.com, joe@...ches.com, apw@...onical.com
Cc: Govindarajulu Varadarajan <govindarajulu90@...il.com>
Subject: [PATCH net-next 08/13] driver: isdn: remove unnecessary NULL check before dev_kfree_skb_any
dev_kfree_skb_any is protected from NULL. No need to check for NULL
while calling this function.
Signed-off-by: Govindarajulu Varadarajan <govindarajulu90@...il.com>
---
drivers/isdn/gigaset/ser-gigaset.c | 3 +--
drivers/isdn/hisax/hfc_usb.c | 6 ++----
drivers/isdn/hisax/icc.c | 6 ++----
drivers/isdn/hisax/ipacx.c | 6 ++----
drivers/isdn/hisax/isac.c | 6 ++----
drivers/isdn/hisax/st5481_b.c | 6 ++----
drivers/isdn/hisax/w6692.c | 6 ++----
7 files changed, 13 insertions(+), 26 deletions(-)
diff --git a/drivers/isdn/gigaset/ser-gigaset.c b/drivers/isdn/gigaset/ser-gigaset.c
index 8c91fd5..9128526 100644
--- a/drivers/isdn/gigaset/ser-gigaset.c
+++ b/drivers/isdn/gigaset/ser-gigaset.c
@@ -221,8 +221,7 @@ static void flush_send_queue(struct cardstate *cs)
spin_unlock_irqrestore(&cs->cmdlock, flags);
/* data queue */
- if (cs->bcs->tx_skb)
- dev_kfree_skb_any(cs->bcs->tx_skb);
+ dev_kfree_skb_any(cs->bcs->tx_skb);
while ((skb = skb_dequeue(&cs->bcs->squeue)) != NULL)
dev_kfree_skb_any(skb);
}
diff --git a/drivers/isdn/hisax/hfc_usb.c b/drivers/isdn/hisax/hfc_usb.c
index 849a807..a1f8380 100644
--- a/drivers/isdn/hisax/hfc_usb.c
+++ b/drivers/isdn/hisax/hfc_usb.c
@@ -864,10 +864,8 @@ rx_int_complete(struct urb *urb)
fifon, urb->status);
fifo->urb->interval = 0; /* cancel automatic rescheduling */
- if (fifo->skbuff) {
- dev_kfree_skb_any(fifo->skbuff);
- fifo->skbuff = NULL;
- }
+ dev_kfree_skb_any(fifo->skbuff);
+ fifo->skbuff = NULL;
return;
}
len = urb->actual_length;
diff --git a/drivers/isdn/hisax/icc.c b/drivers/isdn/hisax/icc.c
index 51dae91..2c52996 100644
--- a/drivers/isdn/hisax/icc.c
+++ b/drivers/isdn/hisax/icc.c
@@ -549,10 +549,8 @@ ICC_l1hw(struct PStack *st, int pr, void *arg)
case (HW_DEACTIVATE | RESPONSE):
skb_queue_purge(&cs->rq);
skb_queue_purge(&cs->sq);
- if (cs->tx_skb) {
- dev_kfree_skb_any(cs->tx_skb);
- cs->tx_skb = NULL;
- }
+ dev_kfree_skb_any(cs->tx_skb);
+ cs->tx_skb = NULL;
if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
del_timer(&cs->dbusytimer);
if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
diff --git a/drivers/isdn/hisax/ipacx.c b/drivers/isdn/hisax/ipacx.c
index 5faa5de..55192a4 100644
--- a/drivers/isdn/hisax/ipacx.c
+++ b/drivers/isdn/hisax/ipacx.c
@@ -181,10 +181,8 @@ dch_l2l1(struct PStack *st, int pr, void *arg)
case (HW_DEACTIVATE | RESPONSE):
skb_queue_purge(&cs->rq);
skb_queue_purge(&cs->sq);
- if (cs->tx_skb) {
- dev_kfree_skb_any(cs->tx_skb);
- cs->tx_skb = NULL;
- }
+ dev_kfree_skb_any(cs->tx_skb);
+ cs->tx_skb = NULL;
if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
del_timer(&cs->dbusytimer);
break;
diff --git a/drivers/isdn/hisax/isac.c b/drivers/isdn/hisax/isac.c
index 7fdf78f..d0895f2 100644
--- a/drivers/isdn/hisax/isac.c
+++ b/drivers/isdn/hisax/isac.c
@@ -547,10 +547,8 @@ ISAC_l1hw(struct PStack *st, int pr, void *arg)
case (HW_DEACTIVATE | RESPONSE):
skb_queue_purge(&cs->rq);
skb_queue_purge(&cs->sq);
- if (cs->tx_skb) {
- dev_kfree_skb_any(cs->tx_skb);
- cs->tx_skb = NULL;
- }
+ dev_kfree_skb_any(cs->tx_skb);
+ cs->tx_skb = NULL;
if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
del_timer(&cs->dbusytimer);
if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
diff --git a/drivers/isdn/hisax/st5481_b.c b/drivers/isdn/hisax/st5481_b.c
index 4098491..b753aca 100644
--- a/drivers/isdn/hisax/st5481_b.c
+++ b/drivers/isdn/hisax/st5481_b.c
@@ -254,10 +254,8 @@ static void st5481B_mode(struct st5481_bcs *bcs, int mode)
} else {
st5481_usb_device_ctrl_msg(adapter, GPIO_OUT, adapter->leds, NULL, NULL);
}
- if (b_out->tx_skb) {
- dev_kfree_skb_any(b_out->tx_skb);
- b_out->tx_skb = NULL;
- }
+ dev_kfree_skb_any(b_out->tx_skb);
+ b_out->tx_skb = NULL;
}
}
diff --git a/drivers/isdn/hisax/w6692.c b/drivers/isdn/hisax/w6692.c
index a858955..dd1fbf4 100644
--- a/drivers/isdn/hisax/w6692.c
+++ b/drivers/isdn/hisax/w6692.c
@@ -653,10 +653,8 @@ W6692_l1hw(struct PStack *st, int pr, void *arg)
case (HW_DEACTIVATE | RESPONSE):
skb_queue_purge(&cs->rq);
skb_queue_purge(&cs->sq);
- if (cs->tx_skb) {
- dev_kfree_skb_any(cs->tx_skb);
- cs->tx_skb = NULL;
- }
+ dev_kfree_skb_any(cs->tx_skb);
+ cs->tx_skb = NULL;
if (test_and_clear_bit(FLG_DBUSY_TIMER, &cs->HW_Flags))
del_timer(&cs->dbusytimer);
if (test_and_clear_bit(FLG_L1_DBUSY, &cs->HW_Flags))
--
1.8.4.2
--
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