From: Mikita Lipski <[email protected]>

Lock irq table when reading a work in queue,
unlock to flush the work, lock again till all tasks
are cleared

Signed-off-by: Mikita Lipski <[email protected]>
Reviewed-by: Harry Wentland <[email protected]>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
index 490017df371d..4be21bf54749 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
@@ -329,14 +329,15 @@ void amdgpu_dm_irq_fini(struct amdgpu_device *adev)
 {
        int src;
        struct irq_list_head *lh;
+       unsigned long irq_table_flags;
        DRM_DEBUG_KMS("DM_IRQ: releasing resources.\n");
-
        for (src = 0; src < DAL_IRQ_SOURCES_NUMBER; src++) {
-
+               DM_IRQ_TABLE_LOCK(adev, irq_table_flags);
                /* The handler was removed from the table,
                 * it means it is safe to flush all the 'work'
                 * (because no code can schedule a new one). */
                lh = &adev->dm.irq_handler_list_low_tab[src];
+               DM_IRQ_TABLE_UNLOCK(adev, irq_table_flags);
                flush_work(&lh->work);
        }
 }
-- 
2.17.0

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