Patch "drm/i915: unpin on error in intel_vgpu_shadow_mm_pin()" has been added to the 5.4-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    drm/i915: unpin on error in intel_vgpu_shadow_mm_pin()

to the 5.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-i915-unpin-on-error-in-intel_vgpu_shadow_mm_pin.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit ac32335c8c7724003ad254073e7dedbeee1cd13a
Author: Dan Carpenter <error27@xxxxxxxxx>
Date:   Tue Nov 15 16:15:18 2022 +0300

    drm/i915: unpin on error in intel_vgpu_shadow_mm_pin()
    
    [ Upstream commit 3792fc508c095abd84b10ceae12bd773e61fdc36 ]
    
    Call intel_vgpu_unpin_mm() on this error path.
    
    Fixes: 418741480809 ("drm/i915/gvt: Adding ppgtt to GVT GEM context after shadow pdps settled.")
    Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
    Signed-off-by: Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx>
    Link: http://patchwork.freedesktop.org/patch/msgid/Y3OQ5tgZIVxyQ/WV@kili
    Reviewed-by: Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
index 058dcd541644..c1dc225d8436 100644
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -632,6 +632,7 @@ static int prepare_workload(struct intel_vgpu_workload *workload)
 
 	if (workload->shadow_mm->type != INTEL_GVT_MM_PPGTT ||
 	    !workload->shadow_mm->ppgtt_mm.shadowed) {
+		intel_vgpu_unpin_mm(workload->shadow_mm);
 		gvt_vgpu_err("workload shadow ppgtt isn't ready\n");
 		return -EINVAL;
 	}