>-----Original Message-----
>From: Yongxin Liu <yongxin....@windriver.com>
>Sent: Monday, March 22, 2021 12:15 AM
>To: vaibhavgupt...@gmail.com; andrewx.bow...@intel.com; Nguyen, Anthony
>L <anthony.l.ngu...@intel.com>
>Cc: netdev@vger.kernel.org; linux-ker...@vger.kernel.org;
>da...@davemloft.net; Brandeburg, Jesse <jesse.brandeb...@intel.com>; intel-
>wired-...@lists.osuosl.org; k...@kernel.org
>Subject: [PATCH net] ixgbe: fix unbalanced device enable/disable in
>suspend/resume
>
>pci_disable_device() called in __ixgbe_shutdown() decreases
>dev->enable_cnt by 1. pci_enable_device_mem() which increases enable_cnt
>dev->by 1, was removed from ixgbe_resume() in commit
>6f82b2558735 ("ixgbe: use generic power management"). This caused
>unbalanced increase/decrease. So add pci_enable_device_mem() back.
>
>Fix the following call trace.
>
> ixgbe 0000:17:00.1: disabling already-disabled device
> Call Trace:
> __ixgbe_shutdown+0x10a/0x1e0 [ixgbe]
> ixgbe_suspend+0x32/0x70 [ixgbe]
> pci_pm_suspend+0x87/0x160
> ? pci_pm_freeze+0xd0/0xd0
> dpm_run_callback+0x42/0x170
> __device_suspend+0x114/0x460
> async_suspend+0x1f/0xa0
> async_run_entry_fn+0x3c/0xf0
> process_one_work+0x1dd/0x410
> worker_thread+0x34/0x3f0
> ? cancel_delayed_work+0x90/0x90
> kthread+0x14c/0x170
> ? kthread_park+0x90/0x90
> ret_from_fork+0x1f/0x30
>
>Fixes: 6f82b2558735 ("ixgbe: use generic power management")
>Signed-off-by: Yongxin Liu <yongxin....@windriver.com>
>---
> drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
Tested-by: Dave Switzer <david.swit...@intel.com>
