USB: hcd: Mark secondary HCD as dead if the primary one died
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>
Tue, 25 Jul 2017 21:58:50 +0000 (23:58 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 30 Jul 2017 14:18:27 +0000 (07:18 -0700)
commitcd5a6a4fdaba150089af2afc220eae0fef74878a
tree8af628b35e698749bbe452b73d9d9941f180826f
parent520eccdfe187591a51ea9ab4c1a024ae4d0f68d9
USB: hcd: Mark secondary HCD as dead if the primary one died

Make usb_hc_died() clear the HCD_FLAG_RH_RUNNING flag for the shared
HCD and set HCD_FLAG_DEAD for it, in analogy with what is done for
the primary one.

Among other thigs, this prevents check_root_hub_suspended() from
returning -EBUSY for dead HCDs which helps to work around system
suspend issues in some situations.

This actually fixes occasional suspend failures on one of my test
machines.

Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/core/hcd.c