On Mon, Apr 10, 2017 at 06:00:07PM +0300, Felipe Balbi wrote:
> From: Janusz Dziedzic <januszx.dziedzic@xxxxxxxxx>
>
> commit de288e36fe33f7e06fa272bc8e2f85aa386d99aa upstream.
>
> In the case of bounced ep0 requests, we must delay DMA operation until
> after ->complete() otherwise we might overwrite contents of req->buf.
>
> This caused problems with RNDIS gadget.
>
> Cc: <stable@xxxxxxxxxxxxxxx> # v4.4 v4.9
> Fixes: d62145929992 ("usb: dwc3: gadget: always unmap EP0 requests")
> Signed-off-by: Janusz Dziedzic <januszx.dziedzic@xxxxxxxxx>
> Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>
> ---
>
> cherry-picked, fixed up and compile tested
This only would apply to 4.9-stable, 4.4-stable it still fails:
patching file drivers/usb/dwc3/gadget.c
Hunk #1 succeeded at 1193 with fuzz 2 (offset 1019 lines).
Hunk #2 FAILED at 183.
Hunk #3 FAILED at 195.
2 out of 3 hunks FAILED -- rejects in file drivers/usb/dwc3/gadget.c
Care to send one for that tree?
thanks,
greg k-h