On Fri, Jul 01, 2022 at 10:02:56AM +0200, Greg KH wrote:
On Thu, Jun 30, 2022 at 04:02:16PM +0200, Michael Grzeschik wrote:For high-speed transfers the __dwc3_prepare_one_trb function is calculating the multiplier setting for the trb based on the length of the trb currently prepared. This assumption is wrong. For trbs with a sglist the length of the actual request has to be taken instead. Signed-off-by: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx> --- drivers/usb/dwc3/gadget.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 8716bece107208..0fc3ecfaa48baf 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1186,7 +1186,7 @@ static void __dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3_trb *trb, dma_addr_t dma, unsigned int length, unsigned int chain, unsigned int node, unsigned int stream_id, unsigned int short_not_ok, unsigned int no_interrupt, - unsigned int is_last, bool must_interrupt) + unsigned int is_last, bool must_interrupt, int req_length)Why not put this right next to 'length'?
Yes, would probably make more sense, but:
And wow, that's a crazy number of options for a function. Why is this even a separate function at all? Why can't it just be in dwc3_prepare_one_trb() as that's the only place this is called?
This is an absolute legitimate question. I will send a v2 including a patch refactoring this to one function beforehand. Thanks, Michael -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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