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Date: Tue, 31 Jul 2018 17:09:22 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: hang.yuan@linux.intel.com
Cc: intel-gvt-dev@lists.freedesktop.org, stable@vger.kernel.org,
        Xiong Zhang <xiong.y.zhang@intel.com>
Subject: Re: [PATCH] drm/i915/gvt: move intel_runtime_pm_get out of spin_lock
 in stop_schedule
Message-ID: <20180731150922.GA13018@kroah.com>
References: <1533031546-29178-1-git-send-email-hang.yuan@linux.intel.com>
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On Tue, Jul 31, 2018 at 06:05:46PM +0800, hang.yuan@linux.intel.com wrote:
> From: Hang Yuan <hang.yuan@linux.intel.com>
> 
> pm_runtime_get_sync in intel_runtime_pm_get might sleep if i915
> device is not active. When stop vgpu schedule, the device may be
> inactive. So need to move runtime_pm_get out of spin_lock/unlock.
> 
> Fixes: b24881e0b0b6("drm/i915/gvt: Add runtime_pm_get/put into gvt_switch_mmio
> Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
> Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com>
> ---
>  drivers/gpu/drm/i915/gvt/mmio_context.c | 2 --
>  drivers/gpu/drm/i915/gvt/sched_policy.c | 3 +++
>  2 files changed, 3 insertions(+), 2 deletions(-)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read:
    https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.

</formletter>