[PATCH v2 next] drm/vc4: unlock on error in vc4_hvs_get_fifo_frame_count()

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The default statement is never used in real life.  However, if it were
used for some reason then call drm_dev_exit() before returning.

Fixes: 8f2fc64773be ("drm/vc4: Fix reading of frame count on GEN5 / Pi4")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
v2: style fixes

 drivers/gpu/drm/vc4/vc4_hvs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c
index b42027636c71..4811d794001f 100644
--- a/drivers/gpu/drm/vc4/vc4_hvs.c
+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
@@ -522,7 +522,7 @@ u8 vc4_hvs_get_fifo_frame_count(struct vc4_hvs *hvs, unsigned int fifo)
 		break;
 	default:
 		drm_err(drm, "Unknown VC4 generation: %d", vc4->gen);
-		return 0;
+		break;
 	}
 
 	drm_dev_exit(idx);
-- 
2.45.2





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