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[media] cx231xx: correctly handling failed allocation

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Since kmalloc can be failed in memory pressure,
if not properly handled, NULL dereference can be happend

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Insu Yun 2015-12-29 16:53:35 -02:00 committed by Mauro Carvalho Chehab
parent b68554cd76
commit f8433226d1
1 changed files with 2 additions and 0 deletions
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drivers/media/usb/cx231xx/cx231xx-417.c
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@ -1382,6 +1382,8 @@ static int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)
buffer_size = urb->actual_length;
buffer = kmalloc(buffer_size, GFP_ATOMIC);
if (!buffer)
return -ENOMEM;
memcpy(buffer, dma_q->ps_head, 3);
memcpy(buffer+3, p_buffer, buffer_size-3);