The index for the hardware layer is always >=0. Previous
code that also used -1 as special index is now gone.

Also apply this to 'ch_enabled' (decon/fimd), since the
variable is on the same line (and is again always unsigned).

Signed-off-by: Tobias Jakobi <tjakobi at math.uni-bielefeld.de>
---
 drivers/gpu/drm/exynos/exynos7_drm_decon.c | 2 +-
 drivers/gpu/drm/exynos/exynos_drm_fimd.c   | 6 +++---
 drivers/gpu/drm/exynos/exynos_mixer.c      | 6 +++---
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c 
b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
index 1f7e33f..5c0b2cc 100644
--- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
@@ -91,7 +91,7 @@ static void decon_wait_for_vblank(struct exynos_drm_crtc 
*crtc)

 static void decon_clear_channel(struct decon_context *ctx)
 {
-       int win, ch_enabled = 0;
+       unsigned int win, ch_enabled = 0;

        DRM_DEBUG_KMS("%s\n", __FILE__);

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c 
b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 9819fa6..ee11ea6 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -216,7 +216,7 @@ static void fimd_wait_for_vblank(struct exynos_drm_crtc 
*crtc)
                DRM_DEBUG_KMS("vblank wait timed out.\n");
 }

-static void fimd_enable_video_output(struct fimd_context *ctx, int win,
+static void fimd_enable_video_output(struct fimd_context *ctx, unsigned int 
win,
                                        bool enable)
 {
        u32 val = readl(ctx->regs + WINCON(win));
@@ -229,7 +229,7 @@ static void fimd_enable_video_output(struct fimd_context 
*ctx, int win,
        writel(val, ctx->regs + WINCON(win));
 }

-static void fimd_enable_shadow_channel_path(struct fimd_context *ctx, int win,
+static void fimd_enable_shadow_channel_path(struct fimd_context *ctx, unsigned 
int win,
                                                bool enable)
 {
        u32 val = readl(ctx->regs + SHADOWCON);
@@ -244,7 +244,7 @@ static void fimd_enable_shadow_channel_path(struct 
fimd_context *ctx, int win,

 static void fimd_clear_channel(struct fimd_context *ctx)
 {
-       int win, ch_enabled = 0;
+       unsigned int win, ch_enabled = 0;

        DRM_DEBUG_KMS("%s\n", __FILE__);

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c 
b/drivers/gpu/drm/exynos/exynos_mixer.c
index ff15702..4a1656b 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -333,7 +333,7 @@ static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, 
unsigned int height)
        mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
 }

-static void mixer_cfg_layer(struct mixer_context *ctx, int win, bool enable)
+static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win, bool 
enable)
 {
        struct mixer_resources *res = &ctx->mixer_res;
        u32 val = enable ? ~0 : 0;
@@ -379,7 +379,7 @@ static void mixer_stop(struct mixer_context *ctx)
                usleep_range(10000, 12000);
 }

-static void vp_video_buffer(struct mixer_context *ctx, int win)
+static void vp_video_buffer(struct mixer_context *ctx, unsigned int win)
 {
        struct mixer_resources *res = &ctx->mixer_res;
        unsigned long flags;
@@ -511,7 +511,7 @@ fail:
        return -ENOTSUPP;
 }

-static void mixer_graph_buffer(struct mixer_context *ctx, int win)
+static void mixer_graph_buffer(struct mixer_context *ctx, unsigned int win)
 {
        struct mixer_resources *res = &ctx->mixer_res;
        unsigned long flags;
-- 
2.0.5

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