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usb: gadget: f_uac1: check return code from config_ep_by_speed

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Not checking config_ep_by_speed could lead to a kernel
NULL pointer dereference error in usb_ep_enable

Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Michael Trimarchi 2015-05-18 17:28:58 +02:00 committed by Felipe Balbi
parent 49a79d8b0a
commit ca4de53c52
1 changed files with 4 additions and 1 deletions
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5
drivers/usb/gadget/function/f_uac1.c
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@ -588,7 +588,10 @@ static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
if (intf == 1) {
if (alt == 1) {
config_ep_by_speed(cdev->gadget, f, out_ep);
err = config_ep_by_speed(cdev->gadget, f, out_ep);
if (err)
return err;
usb_ep_enable(out_ep);
out_ep->driver_data = audio;
audio->copy_buf = f_audio_buffer_alloc(audio_buf_size);