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usb: gadget: f_uac2: restructure some code in afunc_set_alt()

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Restructure some code to make it easier to read.

While at it, return -ENOMEM instead of -EINVAL if
usb_ep_alloc_request() fails, and omit the logging in such cases
(the mm core will complain loud enough).

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Daniel Mack 2014-08-27 19:09:03 +02:00 committed by Felipe Balbi
parent 4953ef6589
commit 430fdbd3b7
1 changed files with 16 additions and 23 deletions
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39
drivers/usb/gadget/function/f_uac2.c
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@ -1104,31 +1104,24 @@ afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt)
usb_ep_enable(ep);
for (i = 0; i < USB_XFERS; i++) {
if (prm->ureq[i].req) {
if (usb_ep_queue(ep, prm->ureq[i].req, GFP_ATOMIC))
dev_err(&uac2->pdev.dev, "%d Error!\n",
__LINE__);
continue;
if (!prm->ureq[i].req) {
req = usb_ep_alloc_request(ep, GFP_ATOMIC);
if (req == NULL)
return -ENOMEM;
prm->ureq[i].req = req;
prm->ureq[i].pp = prm;
req->zero = 0;
req->context = &prm->ureq[i];
req->length = prm->max_psize;
req->complete = agdev_iso_complete;
req->buf = prm->rbuf + i * req->length;
}
req = usb_ep_alloc_request(ep, GFP_ATOMIC);
if (req == NULL) {
dev_err(&uac2->pdev.dev,
"%s:%d Error!\n", __func__, __LINE__);
return -EINVAL;
}
prm->ureq[i].req = req;
prm->ureq[i].pp = prm;
req->zero = 0;
req->context = &prm->ureq[i];
req->length = prm->max_psize;
req->complete = agdev_iso_complete;
req->buf = prm->rbuf + i * req->length;
if (usb_ep_queue(ep, req, GFP_ATOMIC))
dev_err(&uac2->pdev.dev, "%d Error!\n", __LINE__);
if (usb_ep_queue(ep, prm->ureq[i].req, GFP_ATOMIC))
dev_err(&uac2->pdev.dev, "%s:%d Error!\n",
__func__, __LINE__);
}
return 0;