Patch "drm/nouveau: Check backlight IDs are >= 0, not > 0" has been added to the 4.19-stable tree

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This is a note to let you know that I've just added the patch titled

    drm/nouveau: Check backlight IDs are >= 0, not > 0

to the 4.19-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-nouveau-check-backlight-ids-are-0-not-0.patch
and it can be found in the queue-4.19 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From dc854914999d5d52ac1b31740cb0ea8d89d0372e Mon Sep 17 00:00:00 2001
From: Lyude Paul <lyude@xxxxxxxxxx>
Date: Thu, 6 Sep 2018 17:43:21 -0400
Subject: drm/nouveau: Check backlight IDs are >= 0, not > 0

From: Lyude Paul <lyude@xxxxxxxxxx>

commit dc854914999d5d52ac1b31740cb0ea8d89d0372e upstream.

Remember, ida IDs start at 0, not 1!

Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
Reviewed-by: Karol Herbst <kherbst@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Ben Skeggs <bskeggs@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/gpu/drm/nouveau/nouveau_backlight.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -116,7 +116,7 @@ nv40_backlight_init(struct drm_connector
 				       &nv40_bl_ops, &props);
 
 	if (IS_ERR(bd)) {
-		if (bl_connector.id > 0)
+		if (bl_connector.id >= 0)
 			ida_simple_remove(&bl_ida, bl_connector.id);
 		return PTR_ERR(bd);
 	}
@@ -249,7 +249,7 @@ nv50_backlight_init(struct drm_connector
 				       nv_encoder, ops, &props);
 
 	if (IS_ERR(bd)) {
-		if (bl_connector.id > 0)
+		if (bl_connector.id >= 0)
 			ida_simple_remove(&bl_ida, bl_connector.id);
 		return PTR_ERR(bd);
 	}


Patches currently in stable-queue which might be from lyude@xxxxxxxxxx are

queue-4.19/drm-atomic_helper-disallow-new-modesets-on-unregistered-connectors.patch
queue-4.19/drm-i915-fix-hpd-handling-for-pins-with-two-encoders.patch
queue-4.19/drm-i915-dp-restrict-link-retrain-workaround-to-external-monitors.patch
queue-4.19/drm-nouveau-fix-nv50_mstc-best_encoder.patch
queue-4.19/drm-i915-skip-vcpi-allocation-for-mstb-ports-that-are-gone.patch
queue-4.19/drm-amdgpu-suppress-keypresses-from-acpi_video-events.patch
queue-4.19/drm-i915-dp-fix-link-retraining-comment-in-intel_dp_long_pulse.patch
queue-4.19/drm-i915-don-t-unset-intel_connector-mst_port.patch
queue-4.19/drm-i915-fix-possible-race-in-intel_dp_add_mst_connector.patch
queue-4.19/drm-nouveau-check-backlight-ids-are-0-not-0.patch
queue-4.19/drm-i915-fix-null-deref-when-re-enabling-hpd-irqs-on-systems-with-mst.patch
queue-4.19/drm-dp_mst-check-if-primary-mstb-is-null.patch



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