aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/drm_plane.c
diff options
context:
space:
mode:
authorDave Airlie <airlied@redhat.com>2017-12-22 10:00:04 +1000
committerDave Airlie <airlied@redhat.com>2017-12-22 10:00:04 +1000
commit12e412d785c716fbdcc6021c599f61c48e2872ef (patch)
tree6f341b81df9123e5139c4f2941fad6d7a719516f /drivers/gpu/drm/drm_plane.c
parentMerge tag 'drm-intel-fixes-2017-12-20' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes (diff)
parentdrm: move lease init after validation in drm_lease_create (diff)
downloadlinux-dev-12e412d785c716fbdcc6021c599f61c48e2872ef.tar.xz
linux-dev-12e412d785c716fbdcc6021c599f61c48e2872ef.zip
Merge tag 'drm-misc-fixes-2017-12-21' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
drm-misc-fixes before holidays: - fixup for the lease fixup (Keith) - fb leak in the ww mutex fallback code (Maarten) - sun4i fixes (Maxime, Hans) * tag 'drm-misc-fixes-2017-12-21' of git://anongit.freedesktop.org/drm/drm-misc: drm: move lease init after validation in drm_lease_create drm/plane: Make framebuffer refcounting the responsibility of setplane_internal callers drm/sun4i: hdmi: Move the mode_valid callback to the encoder drm/sun4i: Fix error path handling drm/sun4i: validate modes for HDMI
Diffstat (limited to 'drivers/gpu/drm/drm_plane.c')
-rw-r--r--drivers/gpu/drm/drm_plane.c42
1 files changed, 20 insertions, 22 deletions
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 37a93cdffb4a..2c90519576a3 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -558,11 +558,10 @@ int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
}
/*
- * setplane_internal - setplane handler for internal callers
+ * __setplane_internal - setplane handler for internal callers
*
- * Note that we assume an extra reference has already been taken on fb. If the
- * update fails, this reference will be dropped before return; if it succeeds,
- * the previous framebuffer (if any) will be unreferenced instead.
+ * This function will take a reference on the new fb for the plane
+ * on success.
*
* src_{x,y,w,h} are provided in 16.16 fixed point format
*/
@@ -630,14 +629,12 @@ static int __setplane_internal(struct drm_plane *plane,
if (!ret) {
plane->crtc = crtc;
plane->fb = fb;
- fb = NULL;
+ drm_framebuffer_get(plane->fb);
} else {
plane->old_fb = NULL;
}
out:
- if (fb)
- drm_framebuffer_put(fb);
if (plane->old_fb)
drm_framebuffer_put(plane->old_fb);
plane->old_fb = NULL;
@@ -685,6 +682,7 @@ int drm_mode_setplane(struct drm_device *dev, void *data,
struct drm_plane *plane;
struct drm_crtc *crtc = NULL;
struct drm_framebuffer *fb = NULL;
+ int ret;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EINVAL;
@@ -717,15 +715,16 @@ int drm_mode_setplane(struct drm_device *dev, void *data,
}
}
- /*
- * setplane_internal will take care of deref'ing either the old or new
- * framebuffer depending on success.
- */
- return setplane_internal(plane, crtc, fb,
- plane_req->crtc_x, plane_req->crtc_y,
- plane_req->crtc_w, plane_req->crtc_h,
- plane_req->src_x, plane_req->src_y,
- plane_req->src_w, plane_req->src_h);
+ ret = setplane_internal(plane, crtc, fb,
+ plane_req->crtc_x, plane_req->crtc_y,
+ plane_req->crtc_w, plane_req->crtc_h,
+ plane_req->src_x, plane_req->src_y,
+ plane_req->src_w, plane_req->src_h);
+
+ if (fb)
+ drm_framebuffer_put(fb);
+
+ return ret;
}
static int drm_mode_cursor_universal(struct drm_crtc *crtc,
@@ -788,13 +787,12 @@ static int drm_mode_cursor_universal(struct drm_crtc *crtc,
src_h = fb->height << 16;
}
- /*
- * setplane_internal will take care of deref'ing either the old or new
- * framebuffer depending on success.
- */
ret = __setplane_internal(crtc->cursor, crtc, fb,
- crtc_x, crtc_y, crtc_w, crtc_h,
- 0, 0, src_w, src_h, ctx);
+ crtc_x, crtc_y, crtc_w, crtc_h,
+ 0, 0, src_w, src_h, ctx);
+
+ if (fb)
+ drm_framebuffer_put(fb);
/* Update successful; save new cursor position, if necessary */
if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {