Updated tpm_tis to properly use tpm-chip API instead of using ad hoc
methods. tpm_chip_unregister() is called on remove event when PNP driver
is used and on module removal when platform driver is used.
Signed-off-by: Jarkko Sakkinen <jarkko.sakki...@linux.intel.com>
---
drivers/char/tpm/tpm_tis.c | 64 ++++++++++++++++++++--------------------------
1 file changed, 28 insertions(+), 36 deletions(-)
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index a2780df..df04ce6 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -75,9 +75,6 @@ enum tis_defaults {
#define TPM_DID_VID(l) (0x0F00 | ((l) << 12))
#define TPM_RID(l) (0x0F04 | ((l) << 12))
-static LIST_HEAD(tis_chips);
-static DEFINE_MUTEX(tis_lock);
-
#if defined(CONFIG_PNP) && defined(CONFIG_ACPI)
static int is_itpm(struct pnp_dev *dev)
{
@@ -535,14 +532,17 @@ static int tpm_tis_init(struct device *dev,
resource_size_t start,
int rc, i, irq_s, irq_e, probe;
struct tpm_chip *chip;
- if (!(chip = tpm_register_hardware(dev, &tpm_tis)))
+ chip = tpm_chip_alloc(dev, &tpm_tis);
+ if (!chip)
return -ENODEV;
- chip->vendor.iobase = ioremap(start, len);
- if (!chip->vendor.iobase) {
- rc = -EIO;
- goto out_err;
- }
+ chip->vendor.iobase = devm_ioremap(dev, start, len);
+ if (!chip->vendor.iobase)
+ return -EIO;
+
+ rc = tpm_chip_register(chip);
+ if (rc)
+ return -ENODEV;
/* Default timeouts */
chip->vendor.timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
@@ -720,16 +720,10 @@ static int tpm_tis_init(struct device *dev,
resource_size_t start,
}
INIT_LIST_HEAD(&chip->vendor.list);
- mutex_lock(&tis_lock);
- list_add(&chip->vendor.list, &tis_chips);
- mutex_unlock(&tis_lock);
-
return 0;
out_err:
- if (chip->vendor.iobase)
- iounmap(chip->vendor.iobase);
- tpm_remove_hardware(chip->dev);
+ tpm_chip_unregister(chip);
return rc;
}
@@ -808,13 +802,27 @@ static struct pnp_device_id tpm_pnp_tbl[] = {
};
MODULE_DEVICE_TABLE(pnp, tpm_pnp_tbl);
+static void tpm_tis_chip_remove(struct tpm_chip *chip)
+{
+ iowrite32(~TPM_GLOBAL_INT_ENABLE &
+ ioread32(chip->vendor.iobase +
+ TPM_INT_ENABLE(chip->vendor.
+ locality)),
+ chip->vendor.iobase +
+ TPM_INT_ENABLE(chip->vendor.locality));
+ release_locality(chip, chip->vendor.locality, 1);
+ if (chip->vendor.irq)
+ free_irq(chip->vendor.irq, chip);
+
+ tpm_chip_unregister(chip);
+}
+
static void tpm_tis_pnp_remove(struct pnp_dev *dev)
{
struct tpm_chip *chip = pnp_get_drvdata(dev);
- tpm_remove_hardware(chip->dev);
+ tpm_tis_chip_remove(chip);
}
-
static struct pnp_driver tis_pnp_driver = {
.name = "tpm_tis",
.id_table = tpm_pnp_tbl,
@@ -873,31 +881,15 @@ err_dev:
static void __exit cleanup_tis(void)
{
- struct tpm_vendor_specific *i, *j;
struct tpm_chip *chip;
- mutex_lock(&tis_lock);
- list_for_each_entry_safe(i, j, &tis_chips, list) {
- chip = to_tpm_chip(i);
- tpm_remove_hardware(chip->dev);
- iowrite32(~TPM_GLOBAL_INT_ENABLE &
- ioread32(chip->vendor.iobase +
- TPM_INT_ENABLE(chip->vendor.
- locality)),
- chip->vendor.iobase +
- TPM_INT_ENABLE(chip->vendor.locality));
- release_locality(chip, chip->vendor.locality, 1);
- if (chip->vendor.irq)
- free_irq(chip->vendor.irq, chip);
- iounmap(i->iobase);
- list_del(&i->list);
- }
- mutex_unlock(&tis_lock);
#ifdef CONFIG_PNP
if (!force) {
pnp_unregister_driver(&tis_pnp_driver);
return;
}
#endif
+ chip = dev_get_drvdata(&pdev->dev);
+ tpm_tis_chip_remove(chip);
platform_device_unregister(pdev);
platform_driver_unregister(&tis_drv);
}
--
2.1.0
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