sdm845-common: recovery: Wait for USB UDC to be created
After setting the DWC3 controller into peripheral mode, there is still a race in which the on property:sys.usb.config=adb or fastboot action may proceed to write the UDC to the ConfigFS gadget but the UDC is still in the middle of being created. This results in failure to bind the gadget. Although adbd contains a built-in retry mechanism that results in sys.usb.ffs.ready getting set to 1 again which causes the action to be retried, fastbootd does not implement such a retry, so there is only one shot to successfully bind the UDC to ConfigFS. To help the chance of success, add another wait for up to a second for the /sys/class/udc/<controller> path to be created to ensure it is present before the sys.usb.config=fastboot action executes. Change-Id: Iec9d56c39ca6f10ca4298b9050ba744cd0c08ef9
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@ -33,6 +33,7 @@ on property:ro.boot.usbcontroller=*
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setprop sys.usb.controller ${ro.boot.usbcontroller}
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wait /sys/bus/platform/devices/${ro.boot.usb.dwc3_msm:-a600000.ssusb}/mode
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write /sys/bus/platform/devices/${ro.boot.usb.dwc3_msm:-a600000.ssusb}/mode peripheral
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wait /sys/class/udc/${ro.boot.usbcontroller} 1
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on fs
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wait /dev/block/platform/soc/${ro.boot.bootdevice}
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