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Commit da7d60cf authored by qctecmdr's avatar qctecmdr Committed by Gerrit - the friendly Code Review server
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Merge "mhi: core: send critical channels early completion events"

parents e5991c93 450dd147

drivers/bus/mhi/core/mhi_main.c

+24 −2
Original line number Diff line number Diff line
@@ -635,8 +635,16 @@ int mhi_destroy_device(struct device *dev, void *data) 


int mhi_early_notify_device(struct device *dev, void *data)

{

	struct mhi_device *mhi_dev = to_mhi_device(dev);

	struct mhi_controller *mhi_cntrl = mhi_dev->mhi_cntrl;

	struct mhi_device *mhi_dev;

	struct mhi_controller *mhi_cntrl;

	struct mhi_chan *mhi_chan;

	int dir;



	if (dev->bus != &mhi_bus_type)

		return 0;



	mhi_dev = to_mhi_device(dev);

	mhi_cntrl = mhi_dev->mhi_cntrl;



	/* skip early notification */

	if (!mhi_dev->early_notif)
@@ -646,6 +654,20 @@ int mhi_early_notify_device(struct device *dev, void *data) 


	mhi_notify(mhi_dev, MHI_CB_FATAL_ERROR);



	/* send completions to any critical channels waiting on them */

	for (dir = 0; dir < 2; dir++) {

		mhi_chan = dir ? mhi_dev->ul_chan : mhi_dev->dl_chan;



		if (!mhi_chan)

			continue;



		/* wake all threads waiting for completion */

		write_lock_irq(&mhi_chan->lock);

		mhi_chan->ccs = MHI_EV_CC_INVALID;

		complete_all(&mhi_chan->completion);

		write_unlock_irq(&mhi_chan->lock);

	}



	return 0;

}