mmc: sdhci: tegra: disable rtpm at reboot

During Boot stress test, we do not want runtime
callbacks to execute. Hence disable runtime
power management callbacks as part of
Tegra sdhci reboot notifier.

bug 200169886

Change-Id: Idffb8f0794d13c7515d277c9ef29f5eec7490e14
Signed-off-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-on: http://git-master/r/553831
Reviewed-on: http://git-master/r/1013282
Reviewed-by: Ian Chang <ianc@nvidia.com>
Tested-by: Ian Chang <ianc@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Robert Shih <rshih@nvidia.com>

diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index c2be2f258bffb2c86b5048c159d2ac2fe06bb9e3..6eb6009855b14d71cf3f9a4f5889b842e4e397d4 100644 (file)
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -1,7 +1,7 @@
 /*
  * Copyright (C) 2010 Google, Inc.
  *
- * Copyright (c) 2012-2015, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2012-2016, NVIDIA CORPORATION.  All rights reserved.
  *
  * This software is licensed under the terms of the GNU General Public
  * License version 2, as published by the Free Software Foundation, and
@@ -4944,6 +4944,7 @@ static int tegra_sdhci_reboot_notify(struct notifier_block *nb,
        struct sdhci_tegra *tegra_host =
                container_of(nb, struct sdhci_tegra, reboot_notify);
        int err;
+       struct sdhci_host *sdhci = dev_get_drvdata(tegra_host->dev);
 
        switch (event) {
        case SYS_RESTART:
@@ -4954,6 +4955,11 @@ static int tegra_sdhci_reboot_notify(struct notifier_block *nb,
                        pr_err("Disable regulator in reboot notify failed %d\n",
                                err);
 
+               /* disable runtime pm callbacks */
+               pr_debug("%s: %s line=%d\n",
+                       mmc_hostname(sdhci->mmc), __func__, __LINE__);
+               sdhci_runtime_forbid(sdhci);
+
                return NOTIFY_OK;
        }
        return NOTIFY_DONE;