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staging: keucr: remove needless check before usb_free_coherent() 

usb_free_coherent() is safe with NULL addr and this check is
not required.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wei Yongjun 2013-05-23 17:28:34 +08:00 committed by Greg Kroah-Hartman
parent 31de28ab35
commit aba12e3fcc
1 changed files with 3 additions and 6 deletions
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9
drivers/staging/keucr/usb.c
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@ -442,12 +442,9 @@ static void dissociate_dev(struct us_data *us)
kfree(us->sensebuf);
/* Free the device-related DMA-mapped buffers */
if (us->cr)
usb_free_coherent(us->pusb_dev, sizeof(*us->cr), us->cr,
us->cr_dma);
if (us->iobuf)
usb_free_coherent(us->pusb_dev, US_IOBUF_SIZE, us->iobuf,
us->iobuf_dma);
usb_free_coherent(us->pusb_dev, sizeof(*us->cr), us->cr, us->cr_dma);
usb_free_coherent(us->pusb_dev, US_IOBUF_SIZE, us->iobuf,
us->iobuf_dma);
/* Remove our private data from the interface */
usb_set_intfdata(us->pusb_intf, NULL);