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Commit 1f9c60ee authored by Kiran Gunda's avatar Kiran Gunda Committed by Gerrit - the friendly Code Review server
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spi_qsd: Exit gracefully if the system is suspended 



When the spi transfer is initiated during/after system suspend
the runtime pm framework returns an error. Before propagating the
error to the client driver call spi_finalize_current_message
to unblock the spi framework waiting for completion signal from
spi_qsd driver.

Change-Id: Ieee8b93200609143127dbac2f631a60bb028e046
Signed-off-by: default avatarKiran Gunda <kgunda@codeaurora.org>
parent cc0af699

drivers/spi/spi_qsd.c

+12 −5
Original line number Diff line number Diff line
@@ -1655,6 +1655,7 @@ static int msm_spi_transfer_one(struct spi_master *master, 
	if (dd->pdata->is_shared) {

		if (get_local_resources(dd)) {

			mutex_unlock(&dd->core_lock);

			spi_finalize_current_message(master);

			return -EINVAL;

		}
@@ -1708,7 +1709,8 @@ static int msm_spi_prepare_transfer_hardware(struct spi_master *master) 


	resume_state = pm_runtime_get_sync(dd->dev);

	if (resume_state < 0)

		return resume_state;

		goto spi_finalize;



	/*

	 * Counter-part of system-suspend when runtime-pm is not enabled.

	 * This way, resume can be left empty and device will be put in
@@ -1717,11 +1719,16 @@ static int msm_spi_prepare_transfer_hardware(struct spi_master *master) 
	if (!pm_runtime_enabled(dd->dev))

		resume_state = msm_spi_pm_resume_runtime(dd->dev);

	if (resume_state < 0)

		return resume_state;

	if (dd->suspended)

		return -EBUSY;



		goto spi_finalize;

	if (dd->suspended) {

		resume_state = -EBUSY;

		goto spi_finalize;

	}

	return 0;



spi_finalize:

	spi_finalize_current_message(master);

	return resume_state;

}



static int msm_spi_unprepare_transfer_hardware(struct spi_master *master)