From: Dingchen Zhang <dingchen.zh...@amd.com>
to terminate the while-loop in drm_dp_aux_crc_work when
drm_dp_start/stop_crc are called in the hook to set crc source.
v2: Move spin_lock around entire crc->opened use (Daniel)
Cc: Daniel Vetter <dan...@ffwll.ch>
Cc: Harry Wentland <harry.wentl...@amd.com>
Cc: Nick Kazlauskas <nicholas.kazlaus...@amd.com>
Signed-off-by: Dingchen Zhang <dingchen.zh...@amd.com>
---
drivers/gpu/drm/drm_debugfs_crc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/drm_debugfs_crc.c
b/drivers/gpu/drm/drm_debugfs_crc.c
index dac267e840af..f87148203599 100644
--- a/drivers/gpu/drm/drm_debugfs_crc.c
+++ b/drivers/gpu/drm/drm_debugfs_crc.c
@@ -249,6 +249,12 @@ static int crtc_crc_release(struct inode *inode, struct
file *filep)
struct drm_crtc *crtc = filep->f_inode->i_private;
struct drm_crtc_crc *crc = &crtc->crc;
+ /* terminate the infinite while loop if 'drm_dp_aux_crc_work' running */
+ spin_lock_irq(&crc->lock);
+ if (crc->opened)
+ crc->opened = false;
+ spin_unlock_irq(&crc->lock);
+
crtc->funcs->set_crc_source(crtc, NULL);
spin_lock_irq(&crc->lock);
--
2.17.1
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