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media: usb: Use kmemdup instead of duplicating its function.

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kmemdup has implemented the function that kmalloc() + memcpy().
We prefer to kmemdup rather than code opened implementation.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
zhong jiang 2018-09-18 11:25:25 -04:00 committed by Mauro Carvalho Chehab
parent 458ffce1cb
commit 73f847af39
1 changed files with 1 additions and 2 deletions
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3
drivers/media/usb/dvb-usb-v2/gl861.c
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@ -200,11 +200,10 @@ gl861_i2c_write_ex(struct dvb_usb_device *d, u8 addr, u8 *wbuf, u16 wlen)
u8 *buf;
int ret;
buf = kmalloc(wlen, GFP_KERNEL);
buf = kmemdup(wbuf, wlen, GFP_KERNEL);
if (!buf)
return -ENOMEM;
memcpy(buf, wbuf, wlen);
ret = usb_control_msg(d->udev, usb_sndctrlpipe(d->udev, 0),
GL861_REQ_I2C_RAW, GL861_WRITE,
addr << (8 + 1), 0x0100, buf, wlen, 2000);