Merge "msm: mhi_dev: Added mutex lock in mhi_dev_write_channel"

		 * Expected usage is when there is a write

		 * to the MHI core -> notify SM.

		 */

		mutex_lock(&mhi_ctx->mhi_lock);

		mhi_log(MHI_MSG_CRITICAL, "Wakeup by chan:%d\n", ch->ch_id);

		rc = mhi_dev_notify_sm_event(MHI_DEV_EVENT_CORE_WAKEUP);

		if (rc) {

			pr_err("error sending core wakeup event\n");

			mutex_unlock(&mhi_ctx->mhi_lock);

			mutex_unlock(&mhi_ctx->mhi_write_test);

			return rc;

		}

		mutex_unlock(&mhi_ctx->mhi_lock);

	}

	while (atomic_read(&mhi_ctx->is_suspended) &&