diff mbox series

usb: host: xhci-plat: add a shutdown

Message ID 20200306092328.41253-1-ran.wang_1@nxp.com (mailing list archive)
State Mainlined
Commit b433e340e7565110b0ce9ca4b3e26f4b97a1decf
Headers show
Series usb: host: xhci-plat: add a shutdown | expand

Commit Message

Ran Wang March 6, 2020, 9:23 a.m. UTC 
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(+)

Comments

Stephen Boyd March 9, 2020, 6:30 a.m. UTC | #1 
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.
diff mbox series

Patch

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,