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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-05 09:44:57 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-05 09:44:57 -0800
commit83fdbfbfe6e7e8906e3a3f8f6bc074d887e92109 (patch)
tree977e10a076d76fdb2622f089211f3d0954ba6873 /drivers/char
parentd9b2c4d0b03c721808c0d259e43a27f1e80205bc (diff)
parentc84d6efd363a3948eb32ec40d46bab6338580454 (diff)
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (30 commits) TOMOYO: Add recursive directory matching operator support. remove CONFIG_SECURITY_FILE_CAPABILITIES compile option SELinux: print denials for buggy kernel with unknown perms Silence the existing API for capability version compatibility check. LSM: Move security_path_chmod()/security_path_chown() to after mutex_lock(). SELinux: header generation may hit infinite loop selinux: Fix warnings security: report the module name to security_module_request Config option to set a default LSM sysctl: require CAP_SYS_RAWIO to set mmap_min_addr tpm: autoload tpm_tis based on system PnP IDs tpm_tis: TPM_STS_DATA_EXPECT workaround define convenient securebits masks for prctl users (v2) tpm: fix header for modular build tomoyo: improve hash bucket dispersion tpm add default function definitions LSM: imbed ima calls in the security hooks SELinux: add .gitignore files for dynamic classes security: remove root_plug SELinux: fix locking issue introduced with c6d3aaa4e35c71a3 ...
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/tpm/tpm.c2
-rw-r--r--drivers/char/tpm/tpm_tis.c11
2 files changed, 11 insertions, 2 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 47c2d276345..f06bb37defb 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -31,7 +31,7 @@
enum tpm_const {
TPM_MINOR = 224, /* officially assigned */
- TPM_BUFSIZE = 2048,
+ TPM_BUFSIZE = 4096,
TPM_NUM_DEVICES = 256,
};
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 0b73e4ec1ad..2405f17b29d 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -257,6 +257,10 @@ out:
return size;
}
+static int itpm;
+module_param(itpm, bool, 0444);
+MODULE_PARM_DESC(itpm, "Force iTPM workarounds (found on some Lenovo laptops)");
+
/*
* If interrupts are used (signaled by an irq set in the vendor structure)
* tpm.c can skip polling for the data to be available as the interrupt is
@@ -293,7 +297,7 @@ static int tpm_tis_send(struct tpm_chip *chip, u8 *buf, size_t len)
wait_for_stat(chip, TPM_STS_VALID, chip->vendor.timeout_c,
&chip->vendor.int_queue);
status = tpm_tis_status(chip);
- if ((status & TPM_STS_DATA_EXPECT) == 0) {
+ if (!itpm && (status & TPM_STS_DATA_EXPECT) == 0) {
rc = -EIO;
goto out_err;
}
@@ -467,6 +471,10 @@ 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 (itpm)
+ dev_info(dev, "Intel iTPM workaround enabled\n");
+
+
/* Figure out the capabilities */
intfcaps =
ioread32(chip->vendor.iobase +
@@ -629,6 +637,7 @@ static struct pnp_device_id tpm_pnp_tbl[] __devinitdata = {
{"", 0}, /* User Specified */
{"", 0} /* Terminator */
};
+MODULE_DEVICE_TABLE(pnp, tpm_pnp_tbl);
static __devexit void tpm_tis_pnp_remove(struct pnp_dev *dev)
{