From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:47262 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754508AbdCISBn (ORCPT ); Thu, 9 Mar 2017 13:01:43 -0500 Subject: patch "usb: host: xhci-plat: Fix timeout on removal of hot pluggable xhci" added to usb-linus To: linux@roeck-us.net, gregkh@linuxfoundation.org, mathias.nyman@linux.intel.com, stable@vger.kernel.org From: Date: Thu, 09 Mar 2017 18:13:25 +0100 Message-ID: <1489079605913@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled usb: host: xhci-plat: Fix timeout on removal of hot pluggable xhci to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >>From dcc7620cad5ad1326a78f4031a7bf4f0e5b42984 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Thu, 9 Mar 2017 15:39:37 +0200 Subject: usb: host: xhci-plat: Fix timeout on removal of hot pluggable xhci controllers 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 Cc: stable Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-plat.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 6d33b42ffcf5..bd02a6cd8e2c 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -286,6 +286,8 @@ 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); -- 2.12.0