| From f2a659f7d8d5da803836583aa16df06bdf324252 Mon Sep 17 00:00:00 2001 |
| From: Mika Westerberg <mika.westerberg@linux.intel.com> |
| Date: Tue, 19 Dec 2017 12:44:56 +0300 |
| Subject: thunderbolt: Resume control channel after hibernation image is created |
| |
| From: Mika Westerberg <mika.westerberg@linux.intel.com> |
| |
| commit f2a659f7d8d5da803836583aa16df06bdf324252 upstream. |
| |
| The driver misses implementation of PM hook that undoes what |
| ->freeze_noirq() does after the hibernation image is created. This means |
| the control channel is not resumed properly and the Thunderbolt bus |
| becomes useless in later stages of hibernation (when the image is stored |
| or if the operation fails). |
| |
| Fix this by pointing ->thaw_noirq to driver nhi_resume_noirq(). This |
| makes sure the control channel is resumed properly. |
| |
| Fixes: 23dd5bb49d98 ("thunderbolt: Add suspend/hibernate support") |
| Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> |
| Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> |
| Cc: stable@vger.kernel.org |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/thunderbolt/nhi.c | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| --- a/drivers/thunderbolt/nhi.c |
| +++ b/drivers/thunderbolt/nhi.c |
| @@ -627,6 +627,7 @@ static const struct dev_pm_ops nhi_pm_op |
| * we just disable hotplug, the |
| * pci-tunnels stay alive. |
| */ |
| + .thaw_noirq = nhi_resume_noirq, |
| .restore_noirq = nhi_resume_noirq, |
| }; |
| |
