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usb: gadget: call usb_gadget_check_config() to verify UDC capability

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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: dce49449e0 ("usb: cdns3: allocate TX FIFO size according to composite EP number")
Cc: stable <stable@kernel.org>
Reported-by: Ravi Gunasekaran <r-gunasekaran@ti.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20230707230015.494999-1-Frank.Li@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Frank Li 2023-07-07 19:00:14 -04:00 committed by Greg Kroah-Hartman
parent 609fded3f9
commit f4fc01af5b
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/gadget/composite.c
View file

@ -1125,6 +1125,10 @@ int usb_add_config(struct usb_composite_dev *cdev,
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;