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Commit 1fb09ffb authored by Abhijit Kulkarni's avatar Abhijit Kulkarni
Browse files

disp: msm: sde: use dma_map_single to flush the buffer 



dmac_flush_range api is no longer avaialable on latest kernel.
Use dma_map_single to flush the scm buffer before switching to
higher execution previlege.

Change-Id: Ia1c18a6ab9a9c80f5f9ce79816d9dbd3777474b0
Signed-off-by: default avatarAbhijit Kulkarni <kabhijit@codeaurora.org>
parent d1d9ae8b

msm/sde/sde_kms.c

+5 −1
Original line number Diff line number Diff line
@@ -272,6 +272,7 @@ static int _sde_kms_secure_ctrl_xin_clients(struct sde_kms *sde_kms, 
 */

static int _sde_kms_scm_call(struct sde_kms *sde_kms, int vmid)

{

	struct drm_device *dev;

	struct scm_desc desc = {0};

	uint32_t num_sids;

	uint32_t *sec_sid;
@@ -281,6 +282,8 @@ static int _sde_kms_scm_call(struct sde_kms *sde_kms, int vmid) 
	struct qtee_shm shm;

	bool qtee_en = qtee_shmbridge_is_enabled();



	dev = sde_kms->dev;



	num_sids = sde_cfg->sec_sid_mask_count;

	if (!num_sids) {

		SDE_ERROR("secure SID masks not configured, vmid 0x%x\n", vmid);
@@ -313,7 +316,8 @@ static int _sde_kms_scm_call(struct sde_kms *sde_kms, int vmid) 
		sec_sid[i] = sde_cfg->sec_sid_mask[i];

		SDE_DEBUG("sid_mask[%d]: %d\n", i, sec_sid[i]);

	}

	dmac_flush_range(sec_sid, sec_sid + num_sids);

	dma_map_single(dev->dev, sec_sid, num_sids *sizeof(uint32_t),

			DMA_TO_DEVICE);



	SDE_DEBUG("calling scm_call for vmid 0x%x, num_sids %d, qtee_en %d",

				vmid, num_sids, qtee_en);