diff options
| author | Fuqian Huang <huangfq.daxian@gmail.com> | 2019-07-03 13:28:57 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-08-14 05:02:43 -0300 |
| commit | 771560e5d341dc61f9e87bc715f3dbb4efe6ec62 (patch) | |
| tree | fb069729ba7d19bb18365657e640d40d9cbb9a33 /drivers/media/usb/zr364xx/zr364xx.c | |
| parent | 0dc99e042a4cfbc1e27572d523d2a1dbaf402cbf (diff) | |
media: media/usb: Use kmemdup rather than duplicating its implementation
kmemdup is introduced to duplicate a region of memory in a neat way.
Rather than kmalloc/kzalloc + memcpy, which the programmer needs to
write the size twice (sometimes lead to mistakes), kmemdup improves
readability, leads to smaller code and also reduce the chances of mistakes.
Suggestion to use kmemdup rather than using kmalloc/kzalloc + memcpy.
Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/usb/zr364xx/zr364xx.c')
| -rw-r--r-- | drivers/media/usb/zr364xx/zr364xx.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/media/usb/zr364xx/zr364xx.c b/drivers/media/usb/zr364xx/zr364xx.c index b8e89d550d29..637962825d7a 100644 --- a/drivers/media/usb/zr364xx/zr364xx.c +++ b/drivers/media/usb/zr364xx/zr364xx.c @@ -197,12 +197,10 @@ static int send_control_msg(struct usb_device *udev, u8 request, u16 value, { int status; - unsigned char *transfer_buffer = kmalloc(size, GFP_KERNEL); + unsigned char *transfer_buffer = kmemdup(cp, size, GFP_KERNEL); if (!transfer_buffer) return -ENOMEM; - memcpy(transfer_buffer, cp, size); - status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), request, |