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Commit d7842ded authored by Arun Kumar Neelakantam's avatar Arun Kumar Neelakantam Committed by Gerrit - the friendly Code Review server
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qrtr: mhi-dev: Wait for RX channel to be enumerated 



Registering only for endpoint RX channel to complete enumeration and
starting to open both RX/TX channels leads to race condition on TX channel.
Since the host does TX followed by RX init.

Wait for endpoint TX channel init to synchronise with host.

commit qrtr: mhi-dev: Wait for RX channel to be enumerated
(5593a67ad0546).

Change-Id: Ied002a89b51f71fa30cb7557f7dce27cfe1fd202
Signed-off-by: default avatarSricharan R <sricharan@codeaurora.org>
Signed-off-by: default avatarArun Kumar Neelakantam <aneela@codeaurora.org>
Signed-off-by: default avatarManoharan Vijaya Raghavan <mraghava@codeaurora.org>
parent 74ac2ceb

net/qrtr/mhi_dev.c

+4 −1
Original line number Diff line number Diff line
@@ -223,8 +223,11 @@ static int qrtr_mhi_dev_probe(struct platform_device *pdev) 
	mutex_init(&qep->out_lock);

	init_completion(&qep->out_tre);

	qep->ep.xmit = qrtr_mhi_dev_send;

	/* HOST init TX first followed by RX, so register for endpoint TX

	 * which makes both channel ready by checking one channel state.

	 */

	rc = mhi_register_state_cb(qrtr_mhi_dev_state_cb, qep,

				   QRTR_MHI_DEV_IN);

				   QRTR_MHI_DEV_OUT);

	if (rc)

		return rc;