[PATCH xf86-video 1/2] dri: print error message if drmModeRmFB fails

[imre.deak at intel.com (Imre Deak)]

This can fail at least if the caller is not in DRM master mode and leak
the corresponding FB object. So it's better to be verbose about it.

Signed-off-by: Imre Deak <imre.deak at intel.com>
---
 src/intel_display.c |   25 ++++++++++++++++++-------
 src/sna/sna_video.c |   15 +++++++++++++--
 2 files changed, 31 insertions(+), 9 deletions(-)

diff --git a/src/intel_display.c b/src/intel_display.c
index 6dfc8e6..6dd4556 100644
--- a/src/intel_display.c
+++ b/src/intel_display.c
@@ -630,6 +630,16 @@ intel_crtc_shadow_create(xf86CrtcPtr crtc, void *data, int width, int height)
 	return rotate_pixmap;
 }
 
+static void remove_drm_fb(int scrnIndex, int drm_fd, int fb_id)
+{
+	int err;
+
+	err = drmModeRmFB(drm_fd, fb_id);
+	if (err)
+		xf86DrvMsg(scrnIndex, X_ERROR,
+			   "Couldn't remove DRM framebuffer (%d)\n", err);
+}
+
 static void
 intel_crtc_shadow_destroy(xf86CrtcPtr crtc, PixmapPtr rotate_pixmap, void *data)
 {
@@ -646,7 +656,8 @@ intel_crtc_shadow_destroy(xf86CrtcPtr crtc, PixmapPtr rotate_pixmap, void *data)
 	if (data) {
 		/* Be sure to sync acceleration before the memory gets
 		 * unbound. */
-		drmModeRmFB(mode->fd, intel_crtc->rotate_fb_id);
+		remove_drm_fb(scrn->scrnIndex, mode->fd,
+			      intel_crtc->rotate_fb_id);
 		intel_crtc->rotate_fb_id = 0;
 
 		dri_bo_unreference(intel_crtc->rotate_bo);
@@ -1464,7 +1475,7 @@ intel_xf86crtc_resize(ScrnInfoPtr scrn, int width, int height)
 	intel_uxa_create_screen_resources(scrn->pScreen);
 
 	if (old_fb_id)
-		drmModeRmFB(mode->fd, old_fb_id);
+		remove_drm_fb(scrn->scrnIndex, mode->fd, old_fb_id);
 	if (old_front)
 		drm_intel_bo_unreference(old_front);
 
@@ -1478,7 +1489,7 @@ fail:
 	scrn->virtualY = old_height;
 	scrn->displayWidth = old_pitch;
 	if (old_fb_id != mode->fb_id)
-		drmModeRmFB(mode->fd, mode->fb_id);
+		remove_drm_fb(scrn->scrnIndex, mode->fd, mode->fb_id);
 	mode->fb_id = old_fb_id;
 
 	return FALSE;
@@ -1559,7 +1570,7 @@ intel_do_pageflip(intel_screen_private *intel,
 	return TRUE;
 
 error_undo:
-	drmModeRmFB(mode->fd, mode->fb_id);
+	remove_drm_fb(scrn->scrnIndex, mode->fd, mode->fb_id);
 	mode->fb_id = old_fb_id;
 
 error_out:
@@ -1601,7 +1612,7 @@ intel_page_flip_handler(int fd, unsigned int frame, unsigned int tv_sec,
 		return;
 
 	/* Release framebuffer */
-	drmModeRmFB(mode->fd, mode->old_fb_id);
+	remove_drm_fb(0, mode->fd, mode->old_fb_id);
 
 	if (mode->flip_info == NULL)
 		return;
@@ -1704,7 +1715,7 @@ intel_mode_remove_fb(intel_screen_private *intel)
 	struct intel_mode *mode = intel->modes;
 
 	if (mode->fb_id) {
-		drmModeRmFB(mode->fd, mode->fb_id);
+		remove_drm_fb(intel->scrn->scrnIndex, mode->fd, mode->fb_id);
 		mode->fb_id = 0;
 	}
 }
@@ -1727,7 +1738,7 @@ intel_mode_fini(intel_screen_private *intel)
 	}
 
 	if (mode->fb_id)
-		drmModeRmFB(mode->fd, mode->fb_id);
+		remove_drm_fb(intel->scrn->scrnIndex, mode->fd, mode->fb_id);
 
 	/* mode->rotate_fb_id should have been destroyed already */
 
diff --git a/src/sna/sna_video.c b/src/sna/sna_video.c
index b8690ec..8f3f662 100644
--- a/src/sna/sna_video.c
+++ b/src/sna/sna_video.c
@@ -74,6 +74,16 @@ static inline bool sna_video_xvmc_setup(struct sna *sna,
 }
 #endif
 
+static void remove_drm_fb(int scrnIndex, int drm_fd, int fb_id)
+{
+	int err;
+
+	err = drmModeRmFB(drm_fd, fb_id);
+	if (err)
+		xf86DrvMsg(scrnIndex, X_ERROR,
+			   "Couldn't remove DRM framebuffer (%d)\n", err);
+}
+
 void sna_video_free_buffers(struct sna *sna, struct sna_video *video)
 {
 	unsigned int i;
@@ -81,7 +91,7 @@ void sna_video_free_buffers(struct sna *sna, struct sna_video *video)
 	for (i = 0; i < ARRAY_SIZE(video->old_buf); i++) {
 		if (video->old_buf[i]) {
 			if (video->old_buf[i]->unique_id)
-				drmModeRmFB(sna->kgem.fd,
+				remove_drm_fb(sna->scrn->scrnIndex, sna->kgem.fd,
 						video->old_buf[i]->unique_id);
 			kgem_bo_destroy(&sna->kgem, video->old_buf[i]);
 			video->old_buf[i] = NULL;
@@ -90,7 +100,8 @@ void sna_video_free_buffers(struct sna *sna, struct sna_video *video)
 
 	if (video->buf) {
 		if (video->buf->unique_id)
-			drmModeRmFB(sna->kgem.fd, video->buf->unique_id);
+			remove_drm_fb(sna->scrn->scrnIndex, sna->kgem.fd,
+				      video->buf->unique_id);
 		kgem_bo_destroy(&sna->kgem, video->buf);
 		video->buf = NULL;
 	}
-- 
1.7.9.5