diff options
| author | Xianting Tian <xianting.tian@linux.alibaba.com> | 2022-01-12 20:33:34 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-08 18:23:09 +0100 |
| commit | 5467ff8822508f5a21e644f7ecd1f06c693ea477 (patch) | |
| tree | 12d27e55520fdb915b61f7b84ee29cd65c07e1b7 | |
| parent | 4be8f4cddb5885b2fdb6ac666c18372168489183 (diff) | |
drm/msm: Fix wrong size calculation
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@linux.alibaba.com>
Fixes: 072f1f9168ed ("drm/msm: add support for "stolen" mem")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220112123334.749776-1-xianting.tian@linux.alibaba.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/msm/msm_drv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 08ff9d7645d7..11bad11101b9 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -388,7 +388,7 @@ static int msm_init_vram(struct drm_device *dev) 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. |