diff options
| author | Frank Li <Frank.Li@nxp.com> | 2023-07-07 19:00:14 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-07-25 17:46:25 +0200 |
| commit | f4fc01af5b640bc39bd9403b5fd855345a2ad5f8 (patch) | |
| tree | 332af4d99ae41da8d9aa4a8b9c1c7567cb120852 | |
| parent | 609fded3f91972ada551c141c5d04a71704f8967 (diff) | |
| download | xfs-lts-backports-f4fc01af5b640bc39bd9403b5fd855345a2ad5f8.tar.gz | |
usb: gadget: call usb_gadget_check_config() to verify UDC capability
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>
| -rw-r--r-- | drivers/usb/gadget/composite.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 1b3489149e5ea5..dd9b90481b4c21 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -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; |