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drm/amd/display: use vmalloc for struct dc_state

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This is a big structure so use vmalloc as malloc can
fail when there is memory pressure.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3454
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2024-06-26 17:35:41 -04:00
parent 15eb8573ad
commit b73581329a
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
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@ -23,6 +23,7 @@
*
*/
#include <linux/vmalloc.h>
#include <drm/display/drm_dp_helper.h>
#include <drm/display/drm_dp_mst_helper.h>
#include <drm/drm_atomic.h>
@ -1491,9 +1492,10 @@ int pre_validate_dsc(struct drm_atomic_state *state,
* from dm_state->context.
*/
local_dc_state = kmemdup(dm_state->context, sizeof(struct dc_state), GFP_KERNEL);
local_dc_state = vmalloc(sizeof(struct dc_state));
if (!local_dc_state)
return -ENOMEM;
memcpy(local_dc_state, dm_state->context, sizeof(struct dc_state));
for (i = 0; i < local_dc_state->stream_count; i++) {
struct dc_stream_state *stream = dm_state->context->streams[i];
@ -1563,7 +1565,7 @@ int pre_validate_dsc(struct drm_atomic_state *state,
dc_stream_release(local_dc_state->streams[i]);
}
kfree(local_dc_state);
vfree(local_dc_state);
return ret;
}