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Merge "scsi: ufs: Fix some racing problems in ufshcd_shutdown()"

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qctecmdr 2020-08-18 09:26:22 -07:00 • committed by Gerrit - the friendly Code Review server
commit fcbd6f2815
1 changed files with 26 additions and 0 deletions
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26
drivers/scsi/ufs/ufshcd.c
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@ -4949,6 +4949,10 @@ static void ufshcd_slave_destroy(struct scsi_device *sdev)
spin_unlock_irqrestore(hba->host->host_lock, flags);
}
#if defined(CONFIG_SCSI_UFSHCD_QTI)
return;
#endif
ufshcd_crypto_destroy_rq_keyslot_manager(hba, q);
}
@ -8960,6 +8964,9 @@ EXPORT_SYMBOL(ufshcd_runtime_idle);
int ufshcd_shutdown(struct ufs_hba *hba)
{
int ret = 0;
#if defined(CONFIG_SCSI_UFSHCD_QTI)
struct scsi_device *sdev;
#endif
if (!hba->is_powered)
goto out;
@ -8967,11 +8974,30 @@ int ufshcd_shutdown(struct ufs_hba *hba)
if (ufshcd_is_ufs_dev_poweroff(hba) && ufshcd_is_link_off(hba))
goto out;
#if defined(CONFIG_SCSI_UFSHCD_QTI)
pm_runtime_get_sync(hba->dev);
/*
* I/O requests could be still submitted to SCSI devices
* when we are here. Quiesce the scsi device of UFS Device
* well known LU but remove all the other scsi devices.
* After the scsi device is quiesced, only PM requests can
* pass through SCSI layer, which well serves the purpose
* of sending the SSU cmd during ufshcd_suspend().
*/
shost_for_each_device(sdev, hba->host) {
if (sdev == hba->sdev_ufs_device)
scsi_device_quiesce(sdev);
else
scsi_remove_device(sdev);
}
#else
if (pm_runtime_suspended(hba->dev)) {
ret = ufshcd_runtime_resume(hba);
if (ret)
goto out;
}
#endif
ret = ufshcd_suspend(hba, UFS_SHUTDOWN_PM);
out: