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Commit 692ef308 authored by Sagar Gore's avatar Sagar Gore
Browse files

msm: cam: reqmgr: Add list empty check for task list 



Add check for list empty before accessing first entry.
This check is added to prevent list corruption when list
is empty.

Change-Id: I06bd6cfd1398522c9ecd70a960cbdff06905c66b
Signed-off-by: default avatarSagar Gore <sgore@codeaurora.org>
parent 37c5e5a5

drivers/media/platform/msm/camera/cam_req_mgr/cam_req_mgr_workq.c

+4 −0
Original line number Diff line number Diff line
@@ -22,12 +22,16 @@ struct crm_workq_task *cam_req_mgr_workq_get_task( 
		return NULL;



	spin_lock(&workq->task.lock);

	if (list_empty(&workq->task.empty_head))

		goto end;



	task = list_first_entry(&workq->task.empty_head,

		struct crm_workq_task, entry);

	if (task) {

		atomic_sub(1, &workq->task.free_cnt);

		list_del_init(&task->entry);

	}

end:

	spin_unlock(&workq->task.lock);



	return task;