* [PATCH] usb: host: xhci-plat: add a shutdown
@ 2020-03-06 9:23 Ran Wang
2020-03-09 6:30 ` Stephen Boyd
0 siblings, 1 reply; 2+ messages in thread
From: Ran Wang @ 2020-03-06 9:23 UTC (permalink / raw)
To: Mathias Nyman, Greg Kroah-Hartman
Cc: Peter Chen, Jun Li, linux-usb, linux-kernel, Ran Wang
When loading new kernel via kexec, we need to shutdown host controller to
avoid any un-expected memory accessing during new kernel boot.
Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
Reviewed-by: Peter Chen <peter.chen@nxp.com>
---
drivers/usb/host/xhci-plat.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index d90cd5e..315b455 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -445,6 +445,7 @@ MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match);
static struct platform_driver usb_xhci_driver = {
.probe = xhci_plat_probe,
.remove = xhci_plat_remove,
+ .shutdown = usb_hcd_platform_shutdown,
.driver = {
.name = "xhci-hcd",
.pm = &xhci_plat_pm_ops,
--
2.7.4
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] usb: host: xhci-plat: add a shutdown
2020-03-06 9:23 [PATCH] usb: host: xhci-plat: add a shutdown Ran Wang
@ 2020-03-09 6:30 ` Stephen Boyd
0 siblings, 0 replies; 2+ messages in thread
From: Stephen Boyd @ 2020-03-09 6:30 UTC (permalink / raw)
To: Greg Kroah-Hartman, Mathias Nyman, Ran Wang
Cc: Peter Chen, Jun Li, linux-usb, linux-kernel, Ran Wang
Quoting Ran Wang (2020-03-06 01:23:28)
> When loading new kernel via kexec, we need to shutdown host controller to
> avoid any un-expected memory accessing during new kernel boot.
>
> Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
> Reviewed-by: Peter Chen <peter.chen@nxp.com>
> ---
Tested-by: Stephen Boyd <swboyd@chromium.org>
This fixes a problem I see where USB is still active during an orderly
reboot.
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2020-03-09 6:30 UTC | newest]
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2020-03-06 9:23 [PATCH] usb: host: xhci-plat: add a shutdown Ran Wang
2020-03-09 6:30 ` Stephen Boyd
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