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usb: appledisplay: remove needless check before usb_free_coherent()

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

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Link: https://lore.kernel.org/r/20200720052456.7610-1-vulab@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xu Wang 2020-07-20 05:24:56 +00:00 committed by Greg Kroah-Hartman
parent ffeb1e9e89
commit d8a849353c
1 changed files with 1 additions and 2 deletions
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3
drivers/usb/misc/appledisplay.c
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@ -305,8 +305,7 @@ error:
if (pdata->urb) {
usb_kill_urb(pdata->urb);
cancel_delayed_work_sync(&pdata->work);
if (pdata->urbdata)
usb_free_coherent(pdata->udev, ACD_URB_BUFFER_LEN,
usb_free_coherent(pdata->udev, ACD_URB_BUFFER_LEN,
pdata->urbdata, pdata->urb->transfer_dma);
usb_free_urb(pdata->urb);
}