linux-kernel - [PATCH 3.16 206/328] usb: Don't die twice if PCI xhci host is not responding in resume

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Message-ID: <lsq.1544392233.1679372@decadent.org.uk>
Date:   Sun, 09 Dec 2018 21:50:33 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Mathias Nyman" <mathias.nyman@...ux.intel.com>,
        "Alan Stern" <stern@...land.harvard.edu>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>
Subject: [PATCH 3.16 206/328] usb: Don't die twice if PCI xhci host is not
 responding in resume

3.16.62-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Mathias Nyman <mathias.nyman@...ux.intel.com>

commit f3dc41c5d22b2ca14a0802a65d8cdc33a3882d4e upstream.

usb_hc_died() should only be called once, and with the primary HCD
as parameter. It will mark both primary and secondary hcd's dead.

Remove the extra call to usb_cd_died with the shared hcd as parameter.

Fixes: ff9d78b36f76 ("USB: Set usb_hcd->state and flags for shared roothubs")
Signed-off-by: Mathias Nyman <mathias.nyman@...ux.intel.com>
Acked-by: Alan Stern <stern@...land.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/usb/core/hcd-pci.c | 2 --
 1 file changed, 2 deletions(-)

--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -528,8 +528,6 @@ static int resume_common(struct device *
 				event == PM_EVENT_RESTORE);
 		if (retval) {
 			dev_err(dev, "PCI post-resume error %d!\n", retval);
-			if (hcd->shared_hcd)
-				usb_hc_died(hcd->shared_hcd);
 			usb_hc_died(hcd);
 		}
 	}