diff options
| author |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-07-25 23:58:50 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-30 07:18:27 -0700 |
| commit | cd5a6a4fdaba150089af2afc220eae0fef74878a (patch) | |
| tree | 8af628b35e698749bbe452b73d9d9941f180826f /drivers/usb/core | |
| parent | Linux 4.13-rc2 (diff) | |
| download | linux-dev-cd5a6a4fdaba150089af2afc220eae0fef74878a.tar.xz linux-dev-cd5a6a4fdaba150089af2afc220eae0fef74878a.zip | |
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>
Diffstat (limited to 'drivers/usb/core')
| -rw-r--r-- | drivers/usb/core/hcd.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index ab1bb3b538ac..e518f6438877 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2485,6 +2485,8 @@ void usb_hc_died (struct usb_hcd *hcd) } if (usb_hcd_is_primary_hcd(hcd) && hcd->shared_hcd) { hcd = hcd->shared_hcd; + clear_bit(HCD_FLAG_RH_RUNNING, &hcd->flags); + set_bit(HCD_FLAG_DEAD, &hcd->flags); if (hcd->rh_registered) { clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); |