drm: silence variable 'conn' set but not used

Submitted by Qian Cai on July 22, 2019, 7:14 p.m.

Details

Message ID 1563822886-13570-1-git-send-email-cai@lca.pw
State Accepted
Commit bbb6fc43f131f77fcb7ae8081f6d7c51396a2120
Headers show
Series "drm: silence variable 'conn' set but not used" ( rev: 1 ) in DRI devel

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Commit Message

Qian Cai July 22, 2019, 7:14 p.m.
The "struct drm_connector" iteration cursor from
"for_each_new_connector_in_state" is never used in atomic_remove_fb()
which generates a compilation warning,

drivers/gpu/drm/drm_framebuffer.c: In function 'atomic_remove_fb':
drivers/gpu/drm/drm_framebuffer.c:838:24: warning: variable 'conn' set
but not used [-Wunused-but-set-variable]

Silence it by marking "conn" __maybe_unused.

Signed-off-by: Qian Cai <cai@lca.pw>
---
 drivers/gpu/drm/drm_framebuffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
index 0b72468e8131..57564318ceea 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -835,7 +835,7 @@  static int atomic_remove_fb(struct drm_framebuffer *fb)
 	struct drm_device *dev = fb->dev;
 	struct drm_atomic_state *state;
 	struct drm_plane *plane;
-	struct drm_connector *conn;
+	struct drm_connector *conn __maybe_unused;
 	struct drm_connector_state *conn_state;
 	int i, ret;
 	unsigned plane_mask;