drm/exynos: fix WINDOWS_NR checking to vidi driver

This patch just checks if win_data array range is valid
or not correctly.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
index 24376c194a5ec025a1b5f300656c23bea45f50d3..11a016d49a44a662545d5def8fb720a41e26538b 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
@@ -282,7 +282,7 @@ static void vidi_win_mode_set(struct device *dev,
        if (win == DEFAULT_ZPOS)
                win = ctx->default_win;
 
-       if (win < 0 || win > WINDOWS_NR)
+       if (win < 0 || win >= WINDOWS_NR)
                return;
 
        offset = overlay->fb_x * (overlay->bpp >> 3);
@@ -332,7 +332,7 @@ static void vidi_win_commit(struct device *dev, int zpos)
        if (win == DEFAULT_ZPOS)
                win = ctx->default_win;
 
-       if (win < 0 || win > WINDOWS_NR)
+       if (win < 0 || win >= WINDOWS_NR)
                return;
 
        win_data = &ctx->win_data[win];
@@ -356,7 +356,7 @@ static void vidi_win_disable(struct device *dev, int zpos)
        if (win == DEFAULT_ZPOS)
                win = ctx->default_win;
 
-       if (win < 0 || win > WINDOWS_NR)
+       if (win < 0 || win >= WINDOWS_NR)
                return;
 
        win_data = &ctx->win_data[win];