Commit 70627bf8 authored by Radhey Shyam Pandey's avatar Radhey Shyam Pandey Committed by Greg Kroah-Hartman
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usb: dwc3: xilinx: add shutdown callback 



Adds a shutdown callback to ensure that the XHCI stack is properly
shutdown in reboot/shutdown path.

In kexec flow, kernel_restart_prepare() performs actions necessary
to prepare the system for a restart and invokes device_shutdown. To
ensure proper shutdown attach the dwc3 shutdown implementation which
mirrors the remove method.

$ kexec -e

<snip>
xhci-hcd xhci-hcd.0.auto: remove, state 1
usb usb1: USB disconnect, device number 1
usb 1-1: USB disconnect, device number 6
xhci-hcd xhci-hcd.0.auto: USB bus 1 deregistered
kexec_core: Starting new kernel

Signed-off-by: default avatarRadhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Acked-by: default avatarThinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/1748977771-714153-1-git-send-email-radhey.shyam.pandey@amd.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 58992bf3

drivers/usb/dwc3/dwc3-xilinx.c

+1 −0
Original line number Diff line number Diff line
@@ -422,6 +422,7 @@ static const struct dev_pm_ops dwc3_xlnx_dev_pm_ops = { 
static struct platform_driver dwc3_xlnx_driver = {

	.probe		= dwc3_xlnx_probe,

	.remove		= dwc3_xlnx_remove,

	.shutdown	= dwc3_xlnx_remove,

	.driver		= {

		.name		= "dwc3-xilinx",

		.of_match_table	= dwc3_xlnx_of_match,