diff options
| author | Michael Grzeschik <m.grzeschik@pengutronix.de> | 2022-07-04 16:18:12 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-08 15:00:35 +0200 |
| commit | 8affe37c525d800a2628c4ecfaed13b77dc5634a (patch) | |
| tree | cc11fa0513f2b6dbf0f4283e68b8804914f163ec /drivers/usb/dwc3/gadget.c | |
| parent | usb: dwc3: gadget: refactor dwc3_repare_one_trb (diff) | |
| download | linux-8affe37c525d800a2628c4ecfaed13b77dc5634a.tar.xz linux-8affe37c525d800a2628c4ecfaed13b77dc5634a.zip | |
usb: dwc3: gadget: fix high speed multiplier setting
For High-Speed Transfers the prepare_one_trb function is calculating the
multiplier setting for the trb based on the length parameter of the trb
currently prepared. This assumption is wrong. For trbs with a sg list,
the length of the actual request has to be taken instead.
Fixes: 40d829fb2ec6 ("usb: dwc3: gadget: Correct ISOC DATA PIDs for short packets")
Cc: stable <stable@kernel.org>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20220704141812.1532306-3-m.grzeschik@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc3/gadget.c')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index dcd8fc209ccd..4366c45c28cf 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1265,10 +1265,10 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep, unsigned int mult = 2; unsigned int maxp = usb_endpoint_maxp(ep->desc); - if (trb_length <= (2 * maxp)) + if (req->request.length <= (2 * maxp)) mult--; - if (trb_length <= maxp) + if (req->request.length <= maxp) mult--; trb->size |= DWC3_TRB_SIZE_PCM1(mult); |