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Commit d40a58d1 authored by Siva Kumar Akkireddi's avatar Siva Kumar Akkireddi Committed by Siddartha Mohanadoss
Browse files

msm: mhi_dev: Initialize MHI only once after linkup 



Initialize MHI only once even if host sends multiple BMEs
which result in multiple callbacks to MHI from PCIE driver.

Change-Id: I13f0383d4eeee7aadd47176029283b01153872d3
Signed-off-by: default avatarSiva Kumar Akkireddi <sivaa@codeaurora.org>
parent e6141da7

drivers/platform/msm/mhi_dev/mhi.c

+11 −0
Original line number Diff line number Diff line
@@ -3214,6 +3214,15 @@ static int mhi_dev_resume_mmio_mhi_init(struct mhi_dev *mhi_ctx) 
	struct platform_device *pdev;

	int rc = 0;



	/*

	 * There could be multiple calls to this function if device gets

	 * multiple link-up events (bme irqs).

	 */

	if (mhi_ctx->init_done) {

		mhi_log(MHI_MSG_INFO, "mhi init already done, returning\n");

		return 0;

	}



	pdev = mhi_ctx->pdev;



	INIT_WORK(&mhi_ctx->chdb_ctrl_work, mhi_dev_scheduler);
@@ -3345,6 +3354,8 @@ static int mhi_dev_resume_mmio_mhi_init(struct mhi_dev *mhi_ctx) 
	if (mhi_ctx->use_edma)

		mhi_ring_init_cb(mhi_ctx);



	mhi_ctx->init_done = true;



	return 0;

}

drivers/platform/msm/mhi_dev/mhi.h

+3 −0
Original line number Diff line number Diff line
@@ -567,6 +567,9 @@ struct mhi_dev { 
	/* iATU is required to map control and data region */

	bool				config_iatu;



	/* Indicates if mhi init is done */

	bool				init_done;



	/* MHI state info */

	enum mhi_ctrl_info		ctrl_info;