> Subject: [PATCH] usb: gadget: config_ep_by_speed_and_alt instead
> config_ep_by_speed.
>
Typo, you may indicate use config_ep_by_speed_and_alt instead of config_ep_by_speed
> This patch replace config_ep_by_speed with config_ep_by_speed_and_alt.
> This change allows to select proper usb_ss_ep_comp_descriptor for each
> stream capable endpoints.
>
> f_tcm function for SS use array of headers for both BOT/UAS alternate
> setting:
>
Delete space before "BOT/UAS"
> static struct usb_descriptor_header *uasp_ss_function_desc[] = {
> (struct usb_descriptor_header *) &bot_intf_desc,
> (struct usb_descriptor_header *) &uasp_ss_bi_desc,
> (struct usb_descriptor_header *) &bot_bi_ep_comp_desc,
> (struct usb_descriptor_header *) &uasp_ss_bo_desc,
> (struct usb_descriptor_header *) &bot_bo_ep_comp_desc,
>
> (struct usb_descriptor_header *) &uasp_intf_desc,
> (struct usb_descriptor_header *) &uasp_ss_bi_desc,
> (struct usb_descriptor_header *) &uasp_bi_ep_comp_desc,
> (struct usb_descriptor_header *) &uasp_bi_pipe_desc,
> (struct usb_descriptor_header *) &uasp_ss_bo_desc,
> (struct usb_descriptor_header *) &uasp_bo_ep_comp_desc,
> (struct usb_descriptor_header *) &uasp_bo_pipe_desc,
> (struct usb_descriptor_header *) &uasp_ss_status_desc,
> (struct usb_descriptor_header *) &uasp_status_in_ep_comp_desc,
> (struct usb_descriptor_header *) &uasp_status_pipe_desc,
> (struct usb_descriptor_header *) &uasp_ss_cmd_desc,
> (struct usb_descriptor_header *) &uasp_cmd_comp_desc,
> (struct usb_descriptor_header *) &uasp_cmd_pipe_desc,
> NULL,
> };
>
> The first 5 descriptors are associated with BOT alternate setting, and others
> are associated with UAS.
>
delete space before "with UAS"
After fixing above typo, you could add my:
Reviewed-by: Peter Chen <peter.chen@xxxxxxx>
Peter
> During handling UAS alternate setting f_tcm driver invokes
> config_ep_by_speed and this function sets incorrect companion endpoint
> descriptor in usb_ep object.
>
> Instead setting ep->comp_desc to uasp_bi_ep_comp_desc function in this case
> set ep->comp_desc to bot_uasp_ss_bi_desc.
>
> And in result it uses the descriptor from BOT alternate setting instead UAS.
>
> Finally, it causes that controller driver during enabling endpoints detect that
> just enabled endpoint for bot.
>
> Signed-off-by: Jayshri Pawar <jpawar@xxxxxxxxxxx>
> Signed-off-by: Pawel Laszczak <pawell@xxxxxxxxxxx>
> ---
> drivers/usb/gadget/function/f_tcm.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/usb/gadget/function/f_tcm.c
> b/drivers/usb/gadget/function/f_tcm.c
> index 184165e27908..410fa89eae8f 100644
> --- a/drivers/usb/gadget/function/f_tcm.c
> +++ b/drivers/usb/gadget/function/f_tcm.c
> @@ -392,12 +392,12 @@ static void bot_set_alt(struct f_uas *fu)
>
> fu->flags = USBG_IS_BOT;
>
> - config_ep_by_speed(gadget, f, fu->ep_in);
> + config_ep_by_speed_and_alt(gadget, f, fu->ep_in, USB_G_ALT_INT_BBB);
> ret = usb_ep_enable(fu->ep_in);
> if (ret)
> goto err_b_in;
>
> - config_ep_by_speed(gadget, f, fu->ep_out);
> + config_ep_by_speed_and_alt(gadget, f, fu->ep_out,
> USB_G_ALT_INT_BBB);
> ret = usb_ep_enable(fu->ep_out);
> if (ret)
> goto err_b_out;
> @@ -852,21 +852,21 @@ static void uasp_set_alt(struct f_uas *fu)
> if (gadget->speed >= USB_SPEED_SUPER)
> fu->flags |= USBG_USE_STREAMS;
>
> - config_ep_by_speed(gadget, f, fu->ep_in);
> + config_ep_by_speed_and_alt(gadget, f, fu->ep_in, USB_G_ALT_INT_UAS);
> ret = usb_ep_enable(fu->ep_in);
> if (ret)
> goto err_b_in;
>
> - config_ep_by_speed(gadget, f, fu->ep_out);
> + config_ep_by_speed_and_alt(gadget, f, fu->ep_out,
> USB_G_ALT_INT_UAS);
> ret = usb_ep_enable(fu->ep_out);
> if (ret)
> goto err_b_out;
>
> - config_ep_by_speed(gadget, f, fu->ep_cmd);
> + config_ep_by_speed_and_alt(gadget, f, fu->ep_cmd,
> USB_G_ALT_INT_UAS);
> ret = usb_ep_enable(fu->ep_cmd);
> if (ret)
> goto err_cmd;
> - config_ep_by_speed(gadget, f, fu->ep_status);
> + config_ep_by_speed_and_alt(gadget, f, fu->ep_status,
> +USB_G_ALT_INT_UAS);
> ret = usb_ep_enable(fu->ep_status);
> if (ret)
> goto err_status;
> --
> 2.17.1
