[PATCH] drm/ingenic: Silence uninitialized-variable warning

From: Paul Cercueil
Date: Sun Jul 19 2020 - 05:38:48 EST


Silence compiler warning about used but uninitialized 'ipu_state'
variable. In practice, the variable would never be used when
uninitialized, but the compiler cannot know that 'priv->ipu_plane' will
always be NULL if CONFIG_INGENIC_IPU is disabled.

Silence the warning by initializing the value to NULL.

Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index b6d946fbeaf5..ada990a7f911 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -198,7 +198,7 @@ static int ingenic_drm_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_crtc_state *state)
{
struct ingenic_drm *priv = drm_crtc_get_priv(crtc);
- struct drm_plane_state *f1_state, *f0_state, *ipu_state;
+ struct drm_plane_state *f1_state, *f0_state, *ipu_state = NULL;
long rate;

if (!drm_atomic_crtc_needs_modeset(state))
@@ -229,7 +229,7 @@ static int ingenic_drm_crtc_atomic_check(struct drm_crtc *crtc,

/* If all the planes are disabled, we won't get a VBLANK IRQ */
priv->no_vblank = !f1_state->fb && !f0_state->fb &&
- !(priv->ipu_plane && ipu_state->fb);
+ !(ipu_state && ipu_state->fb);
}

return 0;
--
2.27.0