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usb: dwc2: Fix in ISOC request length checking 

commit 860ef6cd3f upstream.

Moved ISOC request length checking from dwc2_hsotg_start_req() function to
dwc2_hsotg_ep_queue().

Fixes: 4fca54aa58 ("usb: gadget: s3c-hsotg: add multi count support")
Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Minas Harutyunyan 2020-01-21 14:24:04 +04:00 committed by Greg Kroah-Hartman
parent ceb1997a2e
commit e6535a8c5d
1 changed files with 7 additions and 5 deletions
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12
drivers/usb/dwc2/gadget.c
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@ -1083,11 +1083,6 @@ static void dwc2_hsotg_start_req(struct dwc2_hsotg *hsotg,
else
packets = 1; /* send one packet if length is zero. */
if (hs_ep->isochronous && length > (hs_ep->mc * hs_ep->ep.maxpacket)) {
dev_err(hsotg->dev, "req length > maxpacket*mc\n");
return;
}
if (dir_in && index != 0)
if (hs_ep->isochronous)
epsize = DXEPTSIZ_MC(packets);
@ -1391,6 +1386,13 @@ static int dwc2_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req,
req->actual = 0;
req->status = -EINPROGRESS;
/* Don't queue ISOC request if length greater than mps*mc */
if (hs_ep->isochronous &&
req->length > (hs_ep->mc * hs_ep->ep.maxpacket)) {
dev_err(hs->dev, "req length > maxpacket*mc\n");
return -EINVAL;
}
/* In DDMA mode for ISOC's don't queue request if length greater
* than descriptor limits.
*/