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From:   Ran Wang <ran.wang_1@nxp.com>
To:     Mathias Nyman <mathias.nyman@intel.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     Peter Chen <peter.chen@nxp.com>, Jun Li <jun.li@nxp.com>,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        Ran Wang <ran.wang_1@nxp.com>
Subject: [PATCH] usb: host: xhci-plat: add a shutdown
Date:   Fri,  6 Mar 2020 17:23:28 +0800
Message-Id: <20200306092328.41253-1-ran.wang_1@nxp.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

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