[PATCH xf86-video-amdgpu] modesetting: Skip no-longer-present connectors when resetting BAD links

[Michel Dänzer]

From: Keith Packard <keithp at keithp.com>

Outputs may have NULL mode_output (connector) pointers if the
connector disappears while the server is running. Skip these when
resetting outputs with BAD link status.

(Ported from xserver commit 37f4e7651a2fd51efa613a08a1e705553be33e76)

Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 src/drmmode_display.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/drmmode_display.c b/src/drmmode_display.c
index 2cef93cdd..4ca94e71d 100644
--- a/src/drmmode_display.c
+++ b/src/drmmode_display.c
@@ -2600,9 +2600,12 @@ amdgpu_mode_hotplug(ScrnInfoPtr scrn, drmmode_ptr drmmode)
 	for (i = 0; i < config->num_output; i++) {
 		xf86OutputPtr output = config->output[i];
 		drmmode_output_private_ptr drmmode_output = output->driver_private;
-		uint32_t con_id = drmmode_output->mode_output->connector_id;
+		uint32_t con_id;
 		drmModeConnectorPtr koutput;
 
+		if (drmmode_output->mode_output == NULL)
+			continue;
+		con_id = drmmode_output->mode_output->connector_id;
 		/* Get an updated view of the properties for the current connector and
 		 * look for the link-status property
 		 */
-- 
2.14.2