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Commit 50dfc5dd authored by Sagar Dharia's avatar Sagar Dharia
Browse files

slim: msm: Return success for ch-remove type of messages during SSR 



During SSR, all channels are removed and ports are disconnected since
slimbus HW is not functional. Return success to clients for such
calls so that client can mark channel/port state constistent with HW

Change-Id: I9b18f8e7ffe233090c9612d0811a7d36645d0329
Signed-off-by: default avatarSagar Dharia <sdharia@codeaurora.org>
parent d70d0441

drivers/slimbus/slim-msm-ngd.c

+19 −1
Original line number Diff line number Diff line
@@ -839,8 +839,26 @@ static int ngd_xferandwait_ack(struct slim_controller *ctrl, 
{

	struct msm_slim_ctrl *dev = slim_get_ctrldata(ctrl);

	unsigned long flags;

	int ret;



	if (dev->state == MSM_CTRL_DOWN) {

		/*

		 * no need to send anything to the bus due to SSR

		 * transactions related to channel removal marked as success

		 * since HW is down

		 */

		if ((txn->mt == SLIM_MSG_MT_DEST_REFERRED_USER) &&

			((txn->mc >= SLIM_USR_MC_CHAN_CTRL &&

			  txn->mc <= SLIM_USR_MC_REQ_BW) ||

			txn->mc == SLIM_USR_MC_DISCONNECT_PORT)) {

			spin_lock_irqsave(&ctrl->txn_lock, flags);

			ctrl->txnt[txn->tid] = NULL;

			spin_unlock_irqrestore(&ctrl->txn_lock, flags);

			return 0;

		}

	}



	int ret = ngd_xfer_msg(ctrl, txn);

	ret = ngd_xfer_msg(ctrl, txn);

	if (!ret) {

		int timeout;

		timeout = wait_for_completion_timeout(txn->comp, HZ);