| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 110/135] usb: dwc2: Fix in ISOC request length checking | Date | Thu, 27 Feb 2020 14:37:30 +0100 |
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From: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
commit 860ef6cd3f90b84a1832f8a6485c90c34d3b588b upstream.
Moved ISOC request length checking from dwc2_hsotg_start_req() function to dwc2_hsotg_ep_queue().
Fixes: 4fca54aa58293 ("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>
--- drivers/usb/dwc2/gadget.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-)
--- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -1083,11 +1083,6 @@ static void dwc2_hsotg_start_req(struct 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 us 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. */
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