2013-07-10 04:10:17

by Shuah Khan

Subject: [PATCH 3/4] tpm: Convert tpm_tis driver to use dev_pm_ops from legacy pm_ops

Convert drivers/char/tpm/tpm_tis.c to use dev_pm_ops instead of legacy pm_ops.
This patch depends on pnp driver bus ops change to invoke pnp_driver
dev_pm_ops.

Signed-off-by: Shuah Khan <[email protected]>
---
drivers/char/tpm/tpm_tis.c | 60 ++++++++++++++++++--------------------------
1 file changed, 24 insertions(+), 36 deletions(-)

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 4519cb3..5796d01 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -766,6 +766,25 @@ static void tpm_tis_reenable_interrupts(struct tpm_chip *chip)
}
#endif

+#ifdef CONFIG_PM_SLEEP
+static int tpm_tis_resume(struct device *dev)
+{
+ struct tpm_chip *chip = dev_get_drvdata(dev);
+ int ret;
+
+ if (chip->vendor.irq)
+ tpm_tis_reenable_interrupts(chip);
+
+ ret = tpm_pm_resume(dev);
+ if (!ret)
+ tpm_do_selftest(chip);
+
+ return ret;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(tpm_tis_pm, tpm_pm_suspend, tpm_tis_resume);
+
#ifdef CONFIG_PNP
static int tpm_tis_pnp_init(struct pnp_dev *pnp_dev,
const struct pnp_device_id *pnp_id)
@@ -787,26 +806,6 @@ static int tpm_tis_pnp_init(struct pnp_dev *pnp_dev,
return tpm_tis_init(&pnp_dev->dev, start, len, irq);
}

-static int tpm_tis_pnp_suspend(struct pnp_dev *dev, pm_message_t msg)
-{
- return tpm_pm_suspend(&dev->dev);
-}
-
-static int tpm_tis_pnp_resume(struct pnp_dev *dev)
-{
- struct tpm_chip *chip = pnp_get_drvdata(dev);
- int ret;
-
- if (chip->vendor.irq)
- tpm_tis_reenable_interrupts(chip);
-
- ret = tpm_pm_resume(&dev->dev);
- if (!ret)
- tpm_do_selftest(chip);
-
- return ret;
-}
-
static struct pnp_device_id tpm_pnp_tbl[] = {
{"PNP0C31", 0}, /* TPM */
{"ATM1200", 0}, /* Atmel */
@@ -835,9 +834,12 @@ static struct pnp_driver tis_pnp_driver = {
.name = "tpm_tis",
.id_table = tpm_pnp_tbl,
.probe = tpm_tis_pnp_init,
- .suspend = tpm_tis_pnp_suspend,
- .resume = tpm_tis_pnp_resume,
.remove = tpm_tis_pnp_remove,
+#ifdef CONFIG_PM_SLEEP
+ .driver = {
+ .pm = &tpm_tis_pm,
+ },
+#endif
};

#define TIS_HID_USR_IDX sizeof(tpm_pnp_tbl)/sizeof(struct pnp_device_id) -2
@@ -846,20 +848,6 @@ module_param_string(hid, tpm_pnp_tbl[TIS_HID_USR_IDX].id,
MODULE_PARM_DESC(hid, "Set additional specific HID for this driver to probe");
#endif

-#ifdef CONFIG_PM_SLEEP
-static int tpm_tis_resume(struct device *dev)
-{
- struct tpm_chip *chip = dev_get_drvdata(dev);
-
- if (chip->vendor.irq)
- tpm_tis_reenable_interrupts(chip);
-
- return tpm_pm_resume(dev);
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(tpm_tis_pm, tpm_pm_suspend, tpm_tis_resume);
-
static struct platform_driver tis_drv = {
.driver = {
.name = "tpm_tis",
--
1.7.10.4

2013-07-10 22:43:11

by Peter Huewe

Subject: Re: [tpmdd-devel] [PATCH 3/4] tpm: Convert tpm_tis driver to use dev_pm_ops from legacy pm_ops

Hi,

thanks for your patch
> static struct pnp_device_id tpm_pnp_tbl[] = {
> {"PNP0C31", 0}, /* TPM */
> {"ATM1200", 0}, /* Atmel */
> @@ -835,9 +834,12 @@ static struct pnp_driver tis_pnp_driver = {
> .name = "tpm_tis",
> .id_table = tpm_pnp_tbl,
> .probe = tpm_tis_pnp_init,
> - .suspend = tpm_tis_pnp_suspend,
> - .resume = tpm_tis_pnp_resume,
> .remove = tpm_tis_pnp_remove,
> +#ifdef CONFIG_PM_SLEEP
> + .driver = {
> + .pm = &tpm_tis_pm,
> + },
> +#endif
> };


I don't think the #if CONFIG_PM_SLEEP is required here.

Thanks,
Peter