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Commit 446bace1 authored by Subramanian Ananthanarayanan's avatar Subramanian Ananthanarayanan Committed by Gauri Joshi
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msm: mhi_dev: Use Ring event lock while sending write completion 



Change involes usage of event ring mutex while sending write
channel completion events.

Change-Id: I3817e140551954a732e26d097d53176d573bf7f5
Signed-off-by: default avatarSubramanian Ananthanarayanan <skananth@codeaurora.org>
parent bf72f4d9

drivers/platform/msm/mhi_dev/mhi.c

+2 −2
Original line number Diff line number Diff line
@@ -1617,7 +1617,7 @@ int mhi_dev_send_event(struct mhi_dev *mhi, int evnt_ring, 
		}

	}



	mutex_lock(&mhi->mhi_event_lock);

	mutex_lock(&ring->event_lock);

	/* add the ring element */

	mhi_dev_add_element(ring, el, NULL, 0);
@@ -1650,7 +1650,6 @@ int mhi_dev_send_event(struct mhi_dev *mhi, int evnt_ring, 
	 */

	wmb();



	mutex_unlock(&mhi->mhi_event_lock);

	mhi_log(MHI_MSG_VERBOSE, "event sent:\n");

	mhi_log(MHI_MSG_VERBOSE, "evnt ptr : 0x%llx\n", el->evt_tr_comp.ptr);

	mhi_log(MHI_MSG_VERBOSE, "evnt len : 0x%x\n", el->evt_tr_comp.len);
@@ -1663,6 +1662,7 @@ int mhi_dev_send_event(struct mhi_dev *mhi, int evnt_ring, 
	else

		rc = ep_pcie_trigger_msi(mhi_ctx->phandle, ctx->ev.msivec);



	mutex_unlock(&ring->event_lock);

	return rc;

}