6.16-stable review patch. If anyone has any objections, please let me know.
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From: Radhey Shyam Pandey radhey.shyam.pandey@amd.com
[ Upstream commit 70627bf82e36e61c40c3315e1206e4ea4c02e668 ]
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: Radhey Shyam Pandey radhey.shyam.pandey@amd.com Acked-by: Thinh Nguyen Thinh.Nguyen@synopsys.com Link: https://lore.kernel.org/r/1748977771-714153-1-git-send-email-radhey.shyam.pa... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/dwc3/dwc3-xilinx.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/usb/dwc3/dwc3-xilinx.c b/drivers/usb/dwc3/dwc3-xilinx.c index 4ca7f6240d07..09c3c5c226ab 100644 --- a/drivers/usb/dwc3/dwc3-xilinx.c +++ b/drivers/usb/dwc3/dwc3-xilinx.c @@ -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,