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authorDave Airlie <airlied@redhat.com>2021-04-30 03:13:08 +0300
committerDave Airlie <airlied@redhat.com>2021-04-30 03:13:48 +0300
commit9b2788dbcef756a77659fa22e6a73bec4a57d126 (patch)
treefe93f3a7ae6a689f86d1006ce73908da73411ffd /drivers/gpu
parent12fc11bce6f29a73eb3d61ab4e76a9ece3da1f1d (diff)
parent74deef03a44ae77db85dd80e7ef95777a902e0b3 (diff)
downloadlinux-9b2788dbcef756a77659fa22e6a73bec4a57d126.tar.xz
Merge tag 'drm-misc-next-fixes-2021-04-29' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
Two patches in drm-misc-next-fixes this week, one to fix the error handling in TTM when a BO can't be swapped out and one to prevent a wrong dereference in efifb. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20210429090308.k3fuqvenf6vupfmg@gilmour
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/ttm/ttm_device.c2
-rw-r--r--drivers/gpu/drm/ttm/ttm_tt.c2
-rw-r--r--drivers/gpu/drm/vmwgfx/ttm_memory.c2
3 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_device.c b/drivers/gpu/drm/ttm/ttm_device.c
index 9b787b3caeb5..510e3e001dab 100644
--- a/drivers/gpu/drm/ttm/ttm_device.c
+++ b/drivers/gpu/drm/ttm/ttm_device.c
@@ -112,7 +112,7 @@ int ttm_global_swapout(struct ttm_operation_ctx *ctx, gfp_t gfp_flags)
{
struct ttm_global *glob = &ttm_glob;
struct ttm_device *bdev;
- int ret = -EBUSY;
+ int ret = 0;
mutex_lock(&ttm_global_mutex);
list_for_each_entry(bdev, &glob->device_list, device_list) {
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index eecc930e97ab..a1a25410ec74 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -329,6 +329,8 @@ int ttm_tt_populate(struct ttm_device *bdev,
ttm_dma32_pages_limit) {
ret = ttm_global_swapout(ctx, GFP_KERNEL);
+ if (ret == 0)
+ break;
if (ret < 0)
goto error;
}
diff --git a/drivers/gpu/drm/vmwgfx/ttm_memory.c b/drivers/gpu/drm/vmwgfx/ttm_memory.c
index 104b95a8c7a2..aeb0a22a2c34 100644
--- a/drivers/gpu/drm/vmwgfx/ttm_memory.c
+++ b/drivers/gpu/drm/vmwgfx/ttm_memory.c
@@ -280,7 +280,7 @@ static void ttm_shrink(struct ttm_mem_global *glob, bool from_wq,
spin_unlock(&glob->lock);
ret = ttm_global_swapout(ctx, GFP_KERNEL);
spin_lock(&glob->lock);
- if (unlikely(ret < 0))
+ if (unlikely(ret <= 0))
break;
}