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Subject[PATCH] char/tpm: Use struct dev_pm_ops for power management
Date
This patch converts the suspend and resume functions for
tpm_i2c_stm_st33 to the new dev_pm_ops.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
---
Note:
I'm sending this patch on behalf of myself only and nobody else,
especially not my employer - and I'm doing this in my spare time.
I have to inform you that I'm working for a direct competitor of the driver author,
but I'm not using any knowledge that is considered secret in any way.
I have a personal interest in the TPM subsystem and want to keep it as clean as possible.


drivers/char/tpm/tpm_i2c_stm_st33.c | 25 ++++++++++---------------
1 files changed, 10 insertions(+), 15 deletions(-)

diff --git a/drivers/char/tpm/tpm_i2c_stm_st33.c b/drivers/char/tpm/tpm_i2c_stm_st33.c
index b11201f..ecbb81e 100644
--- a/drivers/char/tpm/tpm_i2c_stm_st33.c
+++ b/drivers/char/tpm/tpm_i2c_stm_st33.c
@@ -826,12 +826,10 @@ static __devexit int tpm_st33_i2c_remove(struct i2c_client *client)
* @param: mesg, the power management message.
* @return: 0 in case of success.
*/
-static int tpm_st33_i2c_pm_suspend(struct i2c_client *client, pm_message_t mesg)
+static int tpm_st33_i2c_pm_suspend(struct device *dev)
{
- struct tpm_chip *chip =
- (struct tpm_chip *)i2c_get_clientdata(client);
- struct st33zp24_platform_data *pin_infos =
- ((struct i2c_client *)TPM_VPRIV(chip))->dev.platform_data;
+ struct tpm_chip *chip = dev_get_drvdata(dev);
+ struct st33zp24_platform_data *pin_infos = dev->platform_data;
int ret = 0;

if (power_mgt)
@@ -839,7 +837,7 @@ static int tpm_st33_i2c_pm_suspend(struct i2c_client *client, pm_message_t mesg)
else{
if (chip->data_buffer == NULL)
chip->data_buffer = pin_infos->tpm_i2c_buffer[0];
- ret = tpm_pm_suspend(&client->dev);
+ ret = tpm_pm_suspend(dev);
}
return ret;
} /* tpm_st33_i2c_suspend() */
@@ -849,12 +847,10 @@ static int tpm_st33_i2c_pm_suspend(struct i2c_client *client, pm_message_t mesg)
* @param: client, the i2c_client drescription (TPM I2C description).
* @return: 0 in case of success.
*/
-static int tpm_st33_i2c_pm_resume(struct i2c_client *client)
+static int tpm_st33_i2c_pm_resume(struct device *dev)
{
- struct tpm_chip *chip =
- (struct tpm_chip *)i2c_get_clientdata(client);
- struct st33zp24_platform_data *pin_infos =
- ((struct i2c_client *)TPM_VPRIV(chip))->dev.platform_data;
+ struct tpm_chip *chip = dev_get_drvdata(dev);
+ struct st33zp24_platform_data *pin_infos = dev->platform_data;

int ret = 0;

@@ -867,7 +863,7 @@ static int tpm_st33_i2c_pm_resume(struct i2c_client *client)
} else{
if (chip->data_buffer == NULL)
chip->data_buffer = pin_infos->tpm_i2c_buffer[0];
- ret = tpm_pm_resume(&client->dev);
+ ret = tpm_pm_resume(dev);
if (!ret)
tpm_do_selftest(chip);
}
@@ -880,16 +876,15 @@ static const struct i2c_device_id tpm_st33_i2c_id[] = {
};

MODULE_DEVICE_TABLE(i2c, tpm_st33_i2c_id);
-
+static SIMPLE_DEV_PM_OPS(tpm_st33_i2c_ops, tpm_st33_i2c_pm_suspend, tpm_st33_i2c_pm_resume);
static struct i2c_driver tpm_st33_i2c_driver = {
.driver = {
.owner = THIS_MODULE,
.name = TPM_ST33_I2C,
+ .pm = &tpm_st33_i2c_ops,
},
.probe = tpm_st33_i2c_probe,
.remove = tpm_st33_i2c_remove,
- .resume = tpm_st33_i2c_pm_resume,
- .suspend = tpm_st33_i2c_pm_suspend,
.id_table = tpm_st33_i2c_id
};

--
1.7.8.6


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