[PATCH 04/13] drm/imx: Make pipe number unsigned

[Thierry Reding]

From: Thierry Reding <treding at nvidia.com>

There's no reason whatsoever why this should ever be negative.

Cc: Philipp Zabel <p.zabel at pengutronix.de>
Signed-off-by: Thierry Reding <treding at nvidia.com>
---
 drivers/gpu/drm/imx/imx-drm-core.c | 4 ++--
 drivers/gpu/drm/imx/imx-drm.h      | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index b250130debc8..c52eccc58a95 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -44,7 +44,7 @@ struct imx_drm_device {
 
 struct imx_drm_crtc {
 	struct drm_crtc				*crtc;
-	int					pipe;
+	unsigned int				pipe;
 	struct imx_drm_crtc_helper_funcs	imx_drm_helper_funcs;
 	struct device_node			*port;
 };
@@ -52,7 +52,7 @@ struct imx_drm_crtc {
 static int legacyfb_depth = 16;
 module_param(legacyfb_depth, int, 0444);
 
-int imx_drm_crtc_id(struct imx_drm_crtc *crtc)
+unsigned int imx_drm_crtc_id(struct imx_drm_crtc *crtc)
 {
 	return crtc->pipe;
 }
diff --git a/drivers/gpu/drm/imx/imx-drm.h b/drivers/gpu/drm/imx/imx-drm.h
index 7453ae00c412..a15b80319a6a 100644
--- a/drivers/gpu/drm/imx/imx-drm.h
+++ b/drivers/gpu/drm/imx/imx-drm.h
@@ -12,7 +12,7 @@ struct drm_framebuffer;
 struct imx_drm_crtc;
 struct platform_device;
 
-int imx_drm_crtc_id(struct imx_drm_crtc *crtc);
+unsigned int imx_drm_crtc_id(struct imx_drm_crtc *crtc);
 
 struct imx_drm_crtc_helper_funcs {
 	int (*enable_vblank)(struct drm_crtc *crtc);
-- 
2.1.3