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Commit 945f45ef authored by Anil Kumar Kanakanti's avatar Anil Kumar Kanakanti
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msm: camera: cci: Fixed CCI Read timeout issue 



Concurrent CCI read operation could lead to corrupting
rd_done variable, so protecting it using queue specific
synchronization variable.

CRs-Fixed: 2746692
Change-Id: I3ef2188d54196a6eb3f2729b558f263bd04a3c07
Signed-off-by: default avatarAnil Kumar Kanakanti <akanakan@codeaurora.org>
parent c96c341d

drivers/cam_sensor_module/cam_cci/cam_cci_core.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -1590,8 +1590,10 @@ static int32_t cam_cci_read_bytes(struct v4l2_subdev *sd, 
	 * THRESHOLD irq's, we reinit the threshold wait before

	 * THRESHOLD irq's, we reinit the threshold wait before

	 * we load the burst read cmd.

	 * we load the burst read cmd.

	 */

	 */

	mutex_lock(&cci_dev->cci_master_info[master].mutex_q[QUEUE_1]);

	reinit_completion(&cci_dev->cci_master_info[master].rd_done);

	reinit_completion(&cci_dev->cci_master_info[master].rd_done);

	reinit_completion(&cci_dev->cci_master_info[master].th_complete);

	reinit_completion(&cci_dev->cci_master_info[master].th_complete);

	mutex_unlock(&cci_dev->cci_master_info[master].mutex_q[QUEUE_1]);





	CAM_DBG(CAM_CCI, "Bytes to read %u", read_bytes);

	CAM_DBG(CAM_CCI, "Bytes to read %u", read_bytes);

	do {

	do {