patch "usb: dwc3: gadget: Use max speed if unspecified" added to usb-linus

This is a note to let you know that I've just added the patch titled

usb: dwc3: gadget: Use max speed if unspecified

to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 93f1d43c5767d70a1af89f54ef16a7d3e99af048 Mon Sep 17 00:00:00 2001
From: Thinh Nguyen <[email protected]>
Date: Mon, 8 Mar 2021 18:16:50 -0800
Subject: usb: dwc3: gadget: Use max speed if unspecified

If the gadget driver doesn't specify a max_speed, then use the controller's maximum supported speed as default. For DWC_usb32 IP, the gadget's speed maybe limited to gen2x1 rate only if the driver's max_speed is unknown. This scenario should not occur with the current implementation since the default gadget driver's max_speed should always be specified. However, to make the driver more robust and help with readability, let's cover all the scenarios in __dwc3_gadget_set_speed().

---
 drivers/usb/dwc3/gadget.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 006476a4737b..4c15c3fce303 100644
@@ -2083,7 +2083,7 @@ static void __dwc3_gadget_set_speed(struct dwc3 *dwc)
 	u32			reg;
 
 	speed = dwc->gadget_max_speed;
-	if (speed > dwc->maximum_speed)
+	if (speed == USB_SPEED_UNKNOWN || speed > dwc->maximum_speed)
 		speed = dwc->maximum_speed;
 
 	if (speed == USB_SPEED_SUPER_PLUS &&

2.31.0