diff options
| author | Ingo Molnar <mingo@elte.hu> | 2010-12-07 07:49:48 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-12-07 07:49:51 +0100 |
| commit | 10a18d7dc0d9f12483c95ffc234118e9b80edfeb (patch) | |
| tree | 0f43620107d5231cab669bca4b3c923b721330c7 /drivers/char/tpm/tpm_tis.c | |
| parent | f984ba4eb575e4a27ed28a76d4126d2aa9233c32 (diff) | |
| parent | cf7d7e5a1980d1116ee152d25dac382b112b9c17 (diff) | |
Merge commit 'v2.6.37-rc5' into perf/core
Merge reason: Pick up the latest -rc.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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"); |