Revert "tmp/tpm_crb: implement runtime pm for tpm_crb"

This reverts commit e350e24694e447e6ab7312fffae5ca31a0bb5165.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

drivers/char/tpm/tpm-interface.c

@@ -29,7 +29,6 @@
 #include <linux/mutex.h>
 #include <linux/spinlock.h>
 #include <linux/freezer.h>
-#include <linux/pm_runtime.h>
 
 #include "tpm.h"
 #include "tpm_eventlog.h"
@@ -357,8 +356,6 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const u8 *buf, size_t bufsiz,
 	if (!(flags & TPM_TRANSMIT_UNLOCKED))
 		mutex_lock(&chip->tpm_mutex);
 
-	pm_runtime_get_sync(chip->dev.parent);
-
 	rc = chip->ops->send(chip, (u8 *) buf, count);
 	if (rc < 0) {
 		dev_err(&chip->dev,
@@ -400,8 +397,6 @@ out_recv:
 		dev_err(&chip->dev,
 			"tpm_transmit: tpm_recv: error %zd\n", rc);
 out:
-	pm_runtime_put(chip->dev.parent);
-
 	if (!(flags & TPM_TRANSMIT_UNLOCKED))
 		mutex_unlock(&chip->tpm_mutex);
 	return rc;

drivers/char/tpm/tpm_crb.c

@@ -19,7 +19,6 @@
 #include <linux/highmem.h>
 #include <linux/rculist.h>
 #include <linux/module.h>
-#include <linux/pm_runtime.h>
 #include "tpm.h"
 
 #define ACPI_SIG_TPM2 "TPM2"
@@ -153,6 +152,8 @@ static int __maybe_unused crb_cmd_ready(struct device *dev,
 	return 0;
 }
 
+static SIMPLE_DEV_PM_OPS(crb_pm, tpm_pm_suspend, tpm_pm_resume);
+
 static u8 crb_status(struct tpm_chip *chip)
 {
 	struct crb_priv *priv = dev_get_drvdata(&chip->dev);
@@ -435,16 +436,9 @@ static int crb_acpi_add(struct acpi_device *device)
 	if (rc)
 		return rc;
 
-	pm_runtime_set_active(dev);
-	pm_runtime_enable(dev);
-
 	rc = tpm_chip_register(chip);
-	if (rc) {
+	if (rc)
 		crb_go_idle(dev, priv);
-		pm_runtime_disable(dev);
-	}
-
-	pm_runtime_put(dev);
 
 	return rc;
 }
@@ -456,34 +450,9 @@ static int crb_acpi_remove(struct acpi_device *device)
 
 	tpm_chip_unregister(chip);
 
-	pm_runtime_disable(dev);
-
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int crb_pm_runtime_suspend(struct device *dev)
-{
-	struct tpm_chip *chip = dev_get_drvdata(dev);
-	struct crb_priv *priv = dev_get_drvdata(&chip->dev);
-
-	return crb_go_idle(dev, priv);
-}
-
-static int crb_pm_runtime_resume(struct device *dev)
-{
-	struct tpm_chip *chip = dev_get_drvdata(dev);
-	struct crb_priv *priv = dev_get_drvdata(&chip->dev);
-
-	return crb_cmd_ready(dev, priv);
-}
-#endif /* CONFIG_PM */
-
-static const struct dev_pm_ops crb_pm = {
-	SET_SYSTEM_SLEEP_PM_OPS(tpm_pm_suspend, tpm_pm_resume)
-	SET_RUNTIME_PM_OPS(crb_pm_runtime_suspend, crb_pm_runtime_resume, NULL)
-};
-
 static struct acpi_device_id crb_device_ids[] = {
 	{"MSFT0101", 0},
 	{"", 0},