This is a note to let you know that I've just added the patch titled
drm/msm: Fix wrong size calculation
to the 4.9-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-msm-fix-wrong-size-calculation.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0a727b459ee39bd4c5ced19d6024258ac87b6b2e Mon Sep 17 00:00:00 2001
From: Xianting Tian <xianting.tian@xxxxxxxxxxxxxxxxx>
Date: Wed, 12 Jan 2022 20:33:34 +0800
Subject: drm/msm: Fix wrong size calculation
From: Xianting Tian <xianting.tian@xxxxxxxxxxxxxxxxx>
commit 0a727b459ee39bd4c5ced19d6024258ac87b6b2e upstream.
For example, memory-region in .dts as below,
reg = <0x0 0x50000000 0x0 0x20000000>
We can get below values,
struct resource r;
r.start = 0x50000000;
r.end = 0x6fffffff;
So the size should be:
size = r.end - r.start + 1 = 0x20000000
Signed-off-by: Xianting Tian <xianting.tian@xxxxxxxxxxxxxxxxx>
Fixes: 072f1f9168ed ("drm/msm: add support for "stolen" mem")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220112123334.749776-1-xianting.tian@xxxxxxxxxxxxxxxxx
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/msm_drv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -297,7 +297,7 @@ static int msm_init_vram(struct drm_devi
of_node_put(node);
if (ret)
return ret;
- size = r.end - r.start;
+ size = r.end - r.start + 1;
DRM_INFO("using VRAM carveout: %lx@%pa\n", size, &r.start);
/* if we have no IOMMU, then we need to use carveout allocator.
Patches currently in stable-queue which might be from xianting.tian@xxxxxxxxxxxxxxxxx are
queue-4.9/drm-msm-fix-wrong-size-calculation.patch
