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authorPatrik Jakobsson <patrik.r.jakobsson@gmail.com>2013-05-26 17:56:19 +0200
committerPatrik Jakobsson <patrik.r.jakobsson@gmail.com>2013-06-09 18:03:32 +0200
commit3463cf1aad48ef43dd0b4cbd7fed15dcc8d2ca53 (patch)
tree32073abf1d0aac112c3d730e9d44e78fe430929f /drivers/gpu/drm
parent22e7c385a80d771aaf3a15ae7ccea3b0686bbe10 (diff)
downloadvexpress-lsk-3463cf1aad48ef43dd0b4cbd7fed15dcc8d2ca53.tar.gz
drm/gma500/psb: Fix cursor gem obj referencing on psb
The internal crtc cursor gem object pointer was never set/updated since it was required to be set in the first place. Fixing this will make the pin/unpin count match and prevent cursor objects from leaking when userspace drops all references to it. Also make sure we drop the gem obj reference on failure. This patch only affects Poulsbo chips. Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r--drivers/gpu/drm/gma500/psb_intel_display.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/gpu/drm/gma500/psb_intel_display.c b/drivers/gpu/drm/gma500/psb_intel_display.c
index 12d129ef21a..6666493789d 100644
--- a/drivers/gpu/drm/gma500/psb_intel_display.c
+++ b/drivers/gpu/drm/gma500/psb_intel_display.c
@@ -843,7 +843,7 @@ static int psb_intel_crtc_cursor_set(struct drm_crtc *crtc,
struct gtt_range *cursor_gt = psb_intel_crtc->cursor_gt;
struct drm_gem_object *obj;
void *tmp_dst, *tmp_src;
- int ret, i, cursor_pages;
+ int ret = 0, i, cursor_pages;
/* if we want to turn of the cursor ignore width and height */
if (!handle) {
@@ -880,7 +880,8 @@ static int psb_intel_crtc_cursor_set(struct drm_crtc *crtc,
if (obj->size < width * height * 4) {
dev_dbg(dev->dev, "buffer is to small\n");
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto unref_cursor;
}
gt = container_of(obj, struct gtt_range, gem);
@@ -889,13 +890,14 @@ static int psb_intel_crtc_cursor_set(struct drm_crtc *crtc,
ret = psb_gtt_pin(gt);
if (ret) {
dev_err(dev->dev, "Can not pin down handle 0x%x\n", handle);
- return ret;
+ goto unref_cursor;
}
if (dev_priv->ops->cursor_needs_phys) {
if (cursor_gt == NULL) {
dev_err(dev->dev, "No hardware cursor mem available");
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto unref_cursor;
}
/* Prevent overflow */
@@ -936,9 +938,14 @@ static int psb_intel_crtc_cursor_set(struct drm_crtc *crtc,
struct gtt_range, gem);
psb_gtt_unpin(gt);
drm_gem_object_unreference(psb_intel_crtc->cursor_obj);
- psb_intel_crtc->cursor_obj = obj;
}
- return 0;
+
+ psb_intel_crtc->cursor_obj = obj;
+ return ret;
+
+unref_cursor:
+ drm_gem_object_unreference(obj);
+ return ret;
}
static int psb_intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)