diff options
| author | Mario Limonciello <mario.limonciello@amd.com> | 2023-11-28 18:35:09 -0600 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-11-30 18:26:31 -0500 |
| commit | b719a9c15d52d4f56bdea8241a5d90fd9197ce99 (patch) | |
| tree | 57317e4c3c7a118b79bc6f400287ab585546b0e4 /drivers/gpu/drm/amd/display/dc/core/dc_resource.c | |
| parent | 71225e1c930942cb1e042fc08c5cc0c4ef30e95e (diff) | |
drm/amd/display: Fix NULL pointer dereference at hibernate
During hibernate sequence the source context might not have a clk_mgr.
So don't use it to look for DML2 support.
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2980
Fixes: 7966f319c66d ("drm/amd/display: Introduce DML2")
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_resource.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index f3a9fdd2340d..e1c02527d04a 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -4554,7 +4554,7 @@ void dc_resource_state_copy_construct( struct dml2_context *dml2 = NULL; // Need to preserve allocated dml2 context - if (src_ctx->clk_mgr->ctx->dc->debug.using_dml2) + if (src_ctx->clk_mgr && src_ctx->clk_mgr->ctx->dc->debug.using_dml2) dml2 = dst_ctx->bw_ctx.dml2; #endif @@ -4562,7 +4562,7 @@ void dc_resource_state_copy_construct( #ifdef CONFIG_DRM_AMD_DC_FP // Preserve allocated dml2 context - if (src_ctx->clk_mgr->ctx->dc->debug.using_dml2) + if (src_ctx->clk_mgr && src_ctx->clk_mgr->ctx->dc->debug.using_dml2) dst_ctx->bw_ctx.dml2 = dml2; #endif |