This is a note to let you know that I've just added the patch titled
usb: gadget: call usb_gadget_check_config() to verify UDC capability
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-gadget-call-usb_gadget_check_config-to-verify-udc-capability.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From f4fc01af5b640bc39bd9403b5fd855345a2ad5f8 Mon Sep 17 00:00:00 2001
From: Frank Li <Frank.Li@xxxxxxx>
Date: Fri, 7 Jul 2023 19:00:14 -0400
Subject: usb: gadget: call usb_gadget_check_config() to verify UDC capability
From: Frank Li <Frank.Li@xxxxxxx>
commit f4fc01af5b640bc39bd9403b5fd855345a2ad5f8 upstream.
The legacy gadget driver omitted calling usb_gadget_check_config()
to ensure that the USB device controller (UDC) has adequate resources,
including sufficient endpoint numbers and types, to support the given
configuration.
Previously, usb_add_config() was solely invoked by the legacy gadget
driver. Adds the necessary usb_gadget_check_config() after the bind()
operation to fix the issue.
Fixes: dce49449e04f ("usb: cdns3: allocate TX FIFO size according to composite EP number")
Cc: stable <stable@xxxxxxxxxx>
Reported-by: Ravi Gunasekaran <r-gunasekaran@xxxxxx>
Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
Link: https://lore.kernel.org/r/20230707230015.494999-1-Frank.Li@xxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/gadget/composite.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1033,6 +1033,10 @@ int usb_add_config(struct usb_composite_
goto done;
status = bind(config);
+
+ if (status == 0)
+ status = usb_gadget_check_config(cdev->gadget);
+
if (status < 0) {
while (!list_empty(&config->functions)) {
struct usb_function *f;
Patches currently in stable-queue which might be from Frank.Li@xxxxxxx are
queue-5.15/usb-cdns3-fix-incorrect-calculation-of-ep_buf_size-when-more-than-one-config.patch
queue-5.15/usb-gadget-call-usb_gadget_check_config-to-verify-udc-capability.patch
