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Commit 1420478c authored by Linux Build Service Account's avatar Linux Build Service Account Committed by Gerrit - the friendly Code Review server
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Merge "mhi_bus: core: check event ring before scheduling work" into msm-4.14

parents 6a7c1069 c47fc8ea

drivers/bus/mhi/core/mhi_main.c

+9 −0
Original line number Diff line number Diff line
@@ -911,6 +911,15 @@ void mhi_ctrl_ev_task(unsigned long data) 
irqreturn_t mhi_msi_handlr(int irq_number, void *dev)

{

	struct mhi_event *mhi_event = dev;

	struct mhi_controller *mhi_cntrl = mhi_event->mhi_cntrl;

	struct mhi_event_ctxt *er_ctxt =

		&mhi_cntrl->mhi_ctxt->er_ctxt[mhi_event->er_index];

	struct mhi_ring *ev_ring = &mhi_event->ring;

	void *dev_rp = mhi_to_virtual(ev_ring, er_ctxt->rp);



	/* confirm ER has pending events to process before scheduling work */

	if (ev_ring->rp == dev_rp)

		return IRQ_HANDLED;



	/* client managed event ring, notify pending data */

	if (mhi_event->cl_manage) {