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: 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:
parent
609fded3f9
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@ -1125,6 +1125,10 @@ int usb_add_config(struct usb_composite_dev *cdev,
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goto done;
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status = bind(config);
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if (status == 0)
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status = usb_gadget_check_config(cdev->gadget);
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if (status < 0) {
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while (!list_empty(&config->functions)) {
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struct usb_function *f;
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