diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-06 22:31:35 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-06 22:32:03 +0000 |
| commit | 4ec3eb13634529c0bc7466658d84d0bbe3244aea (patch) | |
| tree | b491daac2ccfc7b8ca88e171a43f66888463568a /drivers/char/tpm/tpm_tis.c | |
| parent | 24056f525051a9e186af28904b396320e18bf9a0 (diff) | |
| parent | 15095bb0fe779c0403091bda7adce5fb3bb9ca35 (diff) | |
| download | linux-4ec3eb13634529c0bc7466658d84d0bbe3244aea.tar.gz linux-4ec3eb13634529c0bc7466658d84d0bbe3244aea.tar.bz2 linux-4ec3eb13634529c0bc7466658d84d0bbe3244aea.zip | |
Merge branch 'smp' into misc
Conflicts:
arch/arm/kernel/entry-armv.S
arch/arm/mm/ioremap.c
Diffstat (limited to 'drivers/char/tpm/tpm_tis.c')
| -rw-r--r-- | drivers/char/tpm/tpm_tis.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c index 1030f8420137..c17a305ecb28 100644 --- a/drivers/char/tpm/tpm_tis.c +++ b/drivers/char/tpm/tpm_tis.c @@ -25,6 +25,7 @@ #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/wait.h> +#include <linux/acpi.h> #include "tpm.h" #define TPM_HEADER_SIZE 10 @@ -78,6 +79,26 @@ enum tis_defaults { static LIST_HEAD(tis_chips); static DEFINE_SPINLOCK(tis_lock); +#ifdef CONFIG_ACPI +static int is_itpm(struct pnp_dev *dev) +{ + struct acpi_device *acpi = pnp_acpi_device(dev); + struct acpi_hardware_id *id; + + list_for_each_entry(id, &acpi->pnp.ids, list) { + if (!strcmp("INTC0102", id->id)) + return 1; + } + + return 0; +} +#else +static int is_itpm(struct pnp_dev *dev) +{ + return 0; +} +#endif + static int check_locality(struct tpm_chip *chip, int l) { if ((ioread8(chip->vendor.iobase + TPM_ACCESS(l)) & @@ -472,6 +493,9 @@ static int tpm_tis_init(struct device *dev, resource_size_t start, "1.2 TPM (device-id 0x%X, rev-id %d)\n", vendor >> 16, ioread8(chip->vendor.iobase + TPM_RID(0))); + if (is_itpm(to_pnp_dev(dev))) + itpm = 1; + if (itpm) dev_info(dev, "Intel iTPM workaround enabled\n"); |