From: Frank Li Frank.Li@nxp.com
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@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 --- 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;