On Wed, Mar 06, 2024 at 12:11:22AM +0800, Wayne Chang wrote:
This commit resolves an issue in the tegra-xudc USB gadget driver that incorrectly fetched USB3 PHY instances. The problem stemmed from the assumption of a one-to-one correspondence between USB2 and USB3 PHY names and their association with physical USB ports in the device tree.
Previously, the driver associated USB3 PHY names directly with the USB3 instance number, leading to mismatches when mapping the physical USB ports. For instance, if using USB3-1 PHY, the driver expect the corresponding PHY name as 'usb3-1'. However, the physical USB ports in the device tree were designated as USB2-0 and USB3-0 as we only have one device controller, causing a misalignment.
This commit rectifies the issue by adjusting the PHY naming logic. Now, the driver correctly correlates the USB2 and USB3 PHY instances, allowing the USB2-0 and USB3-1 PHYs to form a physical USB port pair while accurately reflecting their configuration in the device tree by naming them USB2-0 and USB3-0, respectively.
The change ensures that the PHY and PHY names align appropriately, resolving the mismatch between physical USB ports and their associated names in the device tree.
Fixes: b4e19931c98a ("usb: gadget: tegra-xudc: Support multiple device modes") Cc: stable@vger.kernel.org
You mark patch 2/2 for stable, but not patch 1/2? That's not going to work well, is it? :(
thanks,
greg k-h