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:
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.
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>
Reviewed-by: Peter Chen <peter.chen@xxxxxxx>
Changelog:
v2:
- typo and unnecessary space have been removed from patch description.
---
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
