From: Guenter Roeck Date: Thu, 9 Mar 2017 13:39:37 +0000 (+0200) Subject: usb: host: xhci-plat: Fix timeout on removal of hot pluggable xhci controllers X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cf09c7d60c;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git usb: host: xhci-plat: Fix timeout on removal of hot pluggable xhci controllers commit dcc7620cad5ad1326a78f4031a7bf4f0e5b42984 upstream. Upstream commit 98d74f9ceaef ("xhci: fix 10 second timeout on removal of PCI hotpluggable xhci controllers") fixes a problem with hot pluggable PCI xhci controllers which can result in excessive timeouts, to the point where the system reports a deadlock. The same problem is seen with hot pluggable xhci controllers using the xhci-plat driver, such as the driver used for Type-C ports on rk3399. Similar to hot-pluggable PCI controllers, the driver for this chip removes the xhci controller from the system when the Type-C cable is disconnected. The solution for PCI devices works just as well for non-PCI devices and avoids the problem. Signed-off-by: Guenter Roeck Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 19cb32a65161..268829db9e88 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -213,6 +213,8 @@ static int xhci_plat_remove(struct platform_device *dev) struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct clk *clk = xhci->clk; + xhci->xhc_state |= XHCI_STATE_REMOVING; + usb_remove_hcd(xhci->shared_hcd); usb_phy_shutdown(hcd->usb_phy);