File U_08-Add-explicit-RADEON_DRM_QUEUE_ERROR-define... of Package xf86-video-ati.openSUSE_Leap_42.2_Update

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File U_08-Add-explicit-RADEON_DRM_QUEUE_ERROR-define.patch of Package xf86-video-ati.openSUSE_Leap_42.2_Update

From: Michel Dänzer <michel.daenzer@amd.com>
Date: Wed Jul 6 12:46:01 2016 +0900
Subject: [PATCH 8/20]Add explicit RADEON_DRM_QUEUE_ERROR define
Patch-mainline: Upstream
Git-repo: git://anongit.freedesktop.org/xorg/driver/xf86-video-ati
Git-commit: a37af701768b12d86868a831a79f1e02ee4968cf
References: bsc#990066
Signed-off-by: Max Staudt <mstaudt@suse.de>

Should make the radeon_drm_queue_alloc error handling clearer, and gets
rid of a compile warning about it returning NULL.

diff --git a/src/drmmode_display.c b/src/drmmode_display.c
index e32791d..b9c8097 100644
--- a/src/drmmode_display.c
+++ b/src/drmmode_display.c
@@ -2829,7 +2829,7 @@ Bool radeon_do_pageflip(ScrnInfoPtr scrn, ClientPtr client,
 						       flipdata,
 						       drmmode_flip_handler,
 						       drmmode_flip_abort);
-		if (!drm_queue_seq) {
+		if (drm_queue_seq == RADEON_DRM_QUEUE_ERROR) {
 			xf86DrvMsg(scrn->scrnIndex, X_WARNING,
 				   "Allocating DRM queue event entry failed.\n");
 			goto error;
diff --git a/src/radeon_dri2.c b/src/radeon_dri2.c
index 5ebc9b7..69fd0ea 100644
--- a/src/radeon_dri2.c
+++ b/src/radeon_dri2.c
@@ -1143,7 +1143,7 @@ static int radeon_dri2_schedule_wait_msc(ClientPtr client, DrawablePtr draw,
     drm_queue_seq = radeon_drm_queue_alloc(crtc, client, RADEON_DRM_QUEUE_ID_DEFAULT,
 					   wait_info, radeon_dri2_frame_event_handler,
 					   radeon_dri2_frame_event_abort);
-    if (!drm_queue_seq) {
+    if (drm_queue_seq == RADEON_DRM_QUEUE_ERROR) {
         xf86DrvMsg(scrn->scrnIndex, X_WARNING,
 		   "Allocating DRM queue event entry failed.\n");
         goto out_complete;
@@ -1290,7 +1290,7 @@ static int radeon_dri2_schedule_swap(ClientPtr client, DrawablePtr draw,
     drm_queue_seq = radeon_drm_queue_alloc(crtc, client, RADEON_DRM_QUEUE_ID_DEFAULT,
 					   swap_info, radeon_dri2_frame_event_handler,
 					   radeon_dri2_frame_event_abort);
-    if (!drm_queue_seq) {
+    if (drm_queue_seq == RADEON_DRM_QUEUE_ERROR) {
         xf86DrvMsg(scrn->scrnIndex, X_WARNING,
 		   "Allocating DRM queue entry failed.\n");
         goto blit_fallback;
diff --git a/src/radeon_drm_queue.c b/src/radeon_drm_queue.c
index 0d999dd..31f2435 100644
--- a/src/radeon_drm_queue.c
+++ b/src/radeon_drm_queue.c
@@ -92,10 +92,11 @@ radeon_drm_queue_alloc(xf86CrtcPtr crtc, ClientPtr client,

e = calloc(1, sizeof(struct radeon_drm_queue_entry));
     if (!e)
-	return NULL;
+	return RADEON_DRM_QUEUE_ERROR;
+
+    if (_X_UNLIKELY(radeon_drm_queue_seq == RADEON_DRM_QUEUE_ERROR))
+	radeon_drm_queue_seq++;

-    if (!radeon_drm_queue_seq)
-	radeon_drm_queue_seq = 1;
     e->seq = radeon_drm_queue_seq++;
     e->client = client;
     e->crtc = crtc;
diff --git a/src/radeon_drm_queue.h b/src/radeon_drm_queue.h
index 0d9d278..c3e2076 100644
--- a/src/radeon_drm_queue.h
+++ b/src/radeon_drm_queue.h
@@ -29,6 +29,8 @@
 #ifndef _RADEON_DRM_QUEUE_H_
 #define _RADEON_DRM_QUEUE_H_

+#define RADEON_DRM_QUEUE_ERROR 0
+
 #define RADEON_DRM_QUEUE_CLIENT_DEFAULT serverClient
 #define RADEON_DRM_QUEUE_ID_DEFAULT ~0ULL

diff --git a/src/radeon_kms.c b/src/radeon_kms.c
index 0ced370..3ba9945 100644
--- a/src/radeon_kms.c
+++ b/src/radeon_kms.c
@@ -529,7 +529,7 @@ radeon_scanout_update(xf86CrtcPtr xf86_crtc)
 					   drmmode_crtc,
 					   radeon_scanout_update_handler,
 					   radeon_scanout_update_abort);
-    if (!drm_queue_seq) {
+    if (drm_queue_seq == RADEON_DRM_QUEUE_ERROR) {
 	xf86DrvMsg(scrn->scrnIndex, X_WARNING,
 		   "radeon_drm_queue_alloc failed for scanout update\n");
 	return;
@@ -581,7 +581,7 @@ radeon_scanout_flip(ScreenPtr pScreen, RADEONInfoPtr info,
 					   RADEON_DRM_QUEUE_ID_DEFAULT,
 					   drmmode_crtc, NULL,
 					   radeon_scanout_flip_abort);
-    if (!drm_queue_seq) {
+    if (drm_queue_seq == RADEON_DRM_QUEUE_ERROR) {
 	xf86DrvMsg(scrn->scrnIndex, X_WARNING,
 		   "Allocating DRM event queue entry failed.\n");
 	return;
diff --git a/src/radeon_present.c b/src/radeon_present.c
index 69a0532..93c18a8 100644
--- a/src/radeon_present.c
+++ b/src/radeon_present.c
@@ -169,7 +169,7 @@ radeon_present_queue_vblank(RRCrtcPtr crtc, uint64_t event_id, uint64_t msc)
 					   event_id, event,
 					   radeon_present_vblank_handler,
 					   radeon_present_vblank_abort);
-    if (!drm_queue_seq) {
+    if (drm_queue_seq == RADEON_DRM_QUEUE_ERROR) {
 	free(event);
 	return BadAlloc;
     }

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