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authorDave Airlie <airlied@redhat.com>2012-03-06 10:44:40 +0000
committerDave Airlie <airlied@redhat.com>2012-03-07 14:07:40 +0000
commitaaefcd4284a5399641ed02ac3e696b5e50ce185e (patch)
tree849fd2cf24563eace23d9d41c9480f7a03daa2e8
parent0be70439f2dcf4a2048e4b02f23f2c239b35a110 (diff)
downloadop-kernel-dev-aaefcd4284a5399641ed02ac3e696b5e50ce185e.zip
op-kernel-dev-aaefcd4284a5399641ed02ac3e696b5e50ce185e.tar.gz
drm/radeon: deal with errors from framebuffer init path.
We've been getting occasional oops running a 32-bit kernel on a certain system in our RHEL test hw. It appears that we fail to get sufficent ioremap space for the framebuffer, and this leads to an oops. This patch should fix the oops and leave a message in the logs we can check for. A future fix would probably to resize the console to a size that we can ioremap. Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
-rw-r--r--drivers/gpu/drm/radeon/radeon_display.c18
-rw-r--r--drivers/gpu/drm/radeon/radeon_fb.c11
-rw-r--r--drivers/gpu/drm/radeon/radeon_mode.h2
3 files changed, 26 insertions, 5 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 8c49fef..3d31433 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -1078,15 +1078,21 @@ static const struct drm_framebuffer_funcs radeon_fb_funcs = {
.create_handle = radeon_user_framebuffer_create_handle,
};
-void
+int
radeon_framebuffer_init(struct drm_device *dev,
struct radeon_framebuffer *rfb,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_gem_object *obj)
{
+ int ret;
rfb->obj = obj;
- drm_framebuffer_init(dev, &rfb->base, &radeon_fb_funcs);
+ ret = drm_framebuffer_init(dev, &rfb->base, &radeon_fb_funcs);
+ if (ret) {
+ rfb->obj = NULL;
+ return ret;
+ }
drm_helper_mode_fill_fb_struct(&rfb->base, mode_cmd);
+ return 0;
}
static struct drm_framebuffer *
@@ -1096,6 +1102,7 @@ radeon_user_framebuffer_create(struct drm_device *dev,
{
struct drm_gem_object *obj;
struct radeon_framebuffer *radeon_fb;
+ int ret;
obj = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
if (obj == NULL) {
@@ -1108,7 +1115,12 @@ radeon_user_framebuffer_create(struct drm_device *dev,
if (radeon_fb == NULL)
return ERR_PTR(-ENOMEM);
- radeon_framebuffer_init(dev, radeon_fb, mode_cmd, obj);
+ ret = radeon_framebuffer_init(dev, radeon_fb, mode_cmd, obj);
+ if (ret) {
+ kfree(radeon_fb);
+ drm_gem_object_unreference_unlocked(obj);
+ return NULL;
+ }
return &radeon_fb->base;
}
diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
index cf2bf35..195471c 100644
--- a/drivers/gpu/drm/radeon/radeon_fb.c
+++ b/drivers/gpu/drm/radeon/radeon_fb.c
@@ -209,6 +209,11 @@ static int radeonfb_create(struct radeon_fbdev *rfbdev,
sizes->surface_depth);
ret = radeonfb_create_pinned_object(rfbdev, &mode_cmd, &gobj);
+ if (ret) {
+ DRM_ERROR("failed to create fbcon object %d\n", ret);
+ return ret;
+ }
+
rbo = gem_to_radeon_bo(gobj);
/* okay we have an object now allocate the framebuffer */
@@ -220,7 +225,11 @@ static int radeonfb_create(struct radeon_fbdev *rfbdev,
info->par = rfbdev;
- radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj);
+ ret = radeon_framebuffer_init(rdev->ddev, &rfbdev->rfb, &mode_cmd, gobj);
+ if (ret) {
+ DRM_ERROR("failed to initalise framebuffer %d\n", ret);
+ goto out_unref;
+ }
fb = &rfbdev->rfb.base;
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
index 4330e32..8a85598 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -649,7 +649,7 @@ extern void radeon_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, int regno);
extern void radeon_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, int regno);
-void radeon_framebuffer_init(struct drm_device *dev,
+int radeon_framebuffer_init(struct drm_device *dev,
struct radeon_framebuffer *rfb,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_gem_object *obj);
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