Fbdev code should be compiled only if CONFIG_DRM_FBDEV_EMULATION option
is enabled. The patch fixes exynos-drm code trying to manipulate
fbdev data which is not initialized in case CONFIG_DRM_FBDEV_EMULATION
is disabled.
Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/Makefile | 6 +++---
drivers/gpu/drm/exynos/exynos_drm_fb.c | 11 -----------
drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 11 +++++++++++
drivers/gpu/drm/exynos/exynos_drm_fbdev.h | 23 ++++++++++++++++++++++-
4 files changed, 36 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/exynos/Makefile b/drivers/gpu/drm/exynos/Makefile
index 968b31c..23d2f95 100644
--- a/drivers/gpu/drm/exynos/Makefile
+++ b/drivers/gpu/drm/exynos/Makefile
@@ -2,10 +2,10 @@
# Makefile for the drm device driver. This driver provides support for the
# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
-exynosdrm-y := exynos_drm_drv.o exynos_drm_crtc.o exynos_drm_fbdev.o \
- exynos_drm_fb.o exynos_drm_gem.o exynos_drm_core.o \
- exynos_drm_plane.o
+exynosdrm-y := exynos_drm_drv.o exynos_drm_crtc.o exynos_drm_fb.o \
+ exynos_drm_gem.o exynos_drm_core.o exynos_drm_plane.o
+exynosdrm-$(CONFIG_DRM_FBDEV_EMULATION) += exynos_drm_fbdev.o
exynosdrm-$(CONFIG_DRM_EXYNOS_IOMMU) += exynos_drm_iommu.o
exynosdrm-$(CONFIG_DRM_EXYNOS_FIMD) += exynos_drm_fimd.o
exynosdrm-$(CONFIG_DRM_EXYNOS5433_DECON) += exynos5433_drm_decon.o
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c
index d614194..81cc553 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fb.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c
@@ -199,17 +199,6 @@ dma_addr_t exynos_drm_fb_dma_addr(struct drm_framebuffer *fb, int index)
return exynos_fb->dma_addr[index];
}
-static void exynos_drm_output_poll_changed(struct drm_device *dev)
-{
- struct exynos_drm_private *private = dev->dev_private;
- struct drm_fb_helper *fb_helper = private->fb_helper;
-
- if (fb_helper)
- drm_fb_helper_hotplug_event(fb_helper);
- else
- exynos_drm_fbdev_init(dev);
-}
-
static const struct drm_mode_config_funcs exynos_drm_mode_config_funcs = {
.fb_create = exynos_user_fb_create,
.output_poll_changed = exynos_drm_output_poll_changed,
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
index 4ae860c..72d7c0b 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
@@ -317,3 +317,14 @@ void exynos_drm_fbdev_restore_mode(struct drm_device *dev)
drm_fb_helper_restore_fbdev_mode_unlocked(private->fb_helper);
}
+
+void exynos_drm_output_poll_changed(struct drm_device *dev)
+{
+ struct exynos_drm_private *private = dev->dev_private;
+ struct drm_fb_helper *fb_helper = private->fb_helper;
+
+ if (fb_helper)
+ drm_fb_helper_hotplug_event(fb_helper);
+ else
+ exynos_drm_fbdev_init(dev);
+}
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
index e16d7f0..330eef8 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
@@ -15,9 +15,30 @@
#ifndef _EXYNOS_DRM_FBDEV_H_
#define _EXYNOS_DRM_FBDEV_H_
+#ifdef CONFIG_DRM_FBDEV_EMULATION
+
int exynos_drm_fbdev_init(struct drm_device *dev);
-int exynos_drm_fbdev_reinit(struct drm_device *dev);
void exynos_drm_fbdev_fini(struct drm_device *dev);
void exynos_drm_fbdev_restore_mode(struct drm_device *dev);
+void exynos_drm_output_poll_changed(struct drm_device *dev);
+
+#else
+
+static inline int exynos_drm_fbdev_init(struct drm_device *dev)
+{
+ return 0;
+}
+
+static inline void exynos_drm_fbdev_fini(struct drm_device *dev)
+{
+}
+
+static inline void exynos_drm_fbdev_restore_mode(struct drm_device *dev)
+{
+}
+
+#define exynos_drm_output_poll_changed (NULL)
+
+#endif
#endif
--
1.9.1
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