drm/amd/display: fix resource saving missing when power state switch (540c1229) · Commits · 戴 / test

drivers/gpu/drm/amd/display/dc/core/dc.c

+11 −0

Original line number	Diff line number	Diff line
		@@ -1930,6 +1930,12 @@ void dc_set_power_state(
		enum dc_acpi_cm_power_state power_state)
		{
		struct kref refcount;
		struct display_mode_lib *dml = kzalloc(sizeof(struct display_mode_lib),
		GFP_KERNEL);

		ASSERT(dml);
		if (!dml)
		return;

		switch (power_state) {
		case DC_ACPI_CM_POWER_STATE_D0:
		@@ -1946,15 +1952,20 @@ void dc_set_power_state(

		/* Preserve refcount */
		refcount = dc->current_state->refcount;
		/* Preserve display mode lib */
		memcpy(dml, &dc->current_state->bw_ctx.dml, sizeof(struct display_mode_lib));

		dc_resource_state_destruct(dc->current_state);
		memset(dc->current_state, 0,
		sizeof(*dc->current_state));

		dc->current_state->refcount = refcount;
		dc->current_state->bw_ctx.dml = *dml;

		break;
		}

		kfree(dml);
		}

		void dc_resume(struct dc *dc)