drm/exynos: fix checks for valid mixer window
Valid values for mixer window are from 0 to MIXER_WIN_NR-1 inclusive.
Arrays in structures (e.g. mixer_context.win_data) have size of
MIXER_WIN_NR so checks for wrong mixer window must be greater-equal.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Hyunhee Kim <hyunhee.kim@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 7c197d38..3658e07 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -742,7 +742,7 @@
if (win == DEFAULT_ZPOS)
win = MIXER_DEFAULT_WIN;
- if (win < 0 || win > MIXER_WIN_NR) {
+ if (win < 0 || win >= MIXER_WIN_NR) {
DRM_ERROR("mixer window[%d] is wrong\n", win);
return;
}