[PATCH] watchdog: pcwd_usb: remove needless check before usb_free_coherent()

[Xu Wang]

usb_free_coherent() is safe with NULL usb_pcwd->intr_buffer and 
this check is not required.

Signed-off-by: Xu Wang <vu...@iscas.ac.cn>
---
 drivers/watchdog/pcwd_usb.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/watchdog/pcwd_usb.c b/drivers/watchdog/pcwd_usb.c
index 2f44af1831d0..6726301ac02e 100644
--- a/drivers/watchdog/pcwd_usb.c
+++ b/drivers/watchdog/pcwd_usb.c
@@ -585,9 +585,8 @@ static struct notifier_block usb_pcwd_notifier = {
 static inline void usb_pcwd_delete(struct usb_pcwd_private *usb_pcwd)
 {
        usb_free_urb(usb_pcwd->intr_urb);
-       if (usb_pcwd->intr_buffer != NULL)
-               usb_free_coherent(usb_pcwd->udev, usb_pcwd->intr_size,
-                                 usb_pcwd->intr_buffer, usb_pcwd->intr_dma);
+       usb_free_coherent(usb_pcwd->udev, usb_pcwd->intr_size,
+                         usb_pcwd->intr_buffer, usb_pcwd->intr_dma);
        kfree(usb_pcwd);
 }
 
-- 
2.17.1