From: Michel Dänzer <[email protected]>

If we fail to find or set the mode for a CRTC, keep trying for the
remaining CRTCs, and only return FALSE if we failed for all CRTCs that
should be on.

Signed-off-by: Michel Dänzer <[email protected]>
---
 src/drmmode_display.c | 31 +++++++++++++++++++++----------
 1 file changed, 21 insertions(+), 10 deletions(-)

diff --git a/src/drmmode_display.c b/src/drmmode_display.c
index 8ccbf735d..12990bd02 100644
--- a/src/drmmode_display.c
+++ b/src/drmmode_display.c
@@ -2523,6 +2523,7 @@ Bool drmmode_set_desired_modes(ScrnInfoPtr pScrn, 
drmmode_ptr drmmode,
 {
        xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(pScrn);
        AMDGPUEntPtr pAMDGPUEnt = AMDGPUEntPriv(pScrn);
+       unsigned num_desired = 0, num_on = 0;
        int c;
 
        for (c = 0; c < config->num_crtc; c++) {
@@ -2557,6 +2558,8 @@ Bool drmmode_set_desired_modes(ScrnInfoPtr pScrn, 
drmmode_ptr drmmode,
                if (!output)
                        continue;
 
+               num_desired++;
+
                /* Mark that we'll need to re-set the mode for sure */
                memset(&crtc->mode, 0, sizeof(crtc->mode));
                if (!crtc->desiredMode.CrtcHDisplay) {
@@ -2564,8 +2567,11 @@ Bool drmmode_set_desired_modes(ScrnInfoPtr pScrn, 
drmmode_ptr drmmode,
                                                                        pScrn->
                                                                        
currentMode);
 
-                       if (!mode)
-                               return FALSE;
+                       if (!mode) {
+                               xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+                                          "Failed to find mode for CRTC %d\n", 
c);
+                               continue;
+                       }
                        crtc->desiredMode = *mode;
                        crtc->desiredRotation = RR_Rotate_0;
                        crtc->desiredX = 0;
@@ -2573,21 +2579,26 @@ Bool drmmode_set_desired_modes(ScrnInfoPtr pScrn, 
drmmode_ptr drmmode,
                }
 
                if (set_hw) {
-                       if (!crtc->funcs->set_mode_major(crtc, 
&crtc->desiredMode,
-                                                        crtc->desiredRotation,
-                                                        crtc->desiredX,
-                                                        crtc->desiredY))
-                               return FALSE;
+                       if (crtc->funcs->set_mode_major(crtc, 
&crtc->desiredMode,
+                                                       crtc->desiredRotation,
+                                                       crtc->desiredX,
+                                                       crtc->desiredY)) {
+                               num_on++;
+                       } else {
+                               xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
+                                          "Failed to set mode on CRTC %d\n", 
c);
+                       }
                } else {
                        crtc->mode = crtc->desiredMode;
                        crtc->rotation = crtc->desiredRotation;
                        crtc->x = crtc->desiredX;
                        crtc->y = crtc->desiredY;
-                       if (!drmmode_handle_transform(crtc))
-                               return FALSE;
+                       if (drmmode_handle_transform(crtc))
+                               num_on++;
                }
        }
-       return TRUE;
+
+       return num_on > 0 || num_desired == 0;
 }
 
 Bool drmmode_setup_colormap(ScreenPtr pScreen, ScrnInfoPtr pScrn)
-- 
2.16.1

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