aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorDmitry Torokhov <dmitry.torokhov@gmail.com>2010-10-01 14:16:39 -0700
committerJames Morris <jmorris@namei.org>2010-10-21 10:12:42 +1100
commit9b3056cca09529d34af2d81305b2a9c6b622ca1b (patch)
tree2b457203d005bd845480c6a9858cd0a8d9f53e4a
parent36f7f28416c97dbb725154930066d115b4447e17 (diff)
downloadmrst-s0i3-test-9b3056cca09529d34af2d81305b2a9c6b622ca1b.tar.gz
mrst-s0i3-test-9b3056cca09529d34af2d81305b2a9c6b622ca1b.tar.xz
mrst-s0i3-test-9b3056cca09529d34af2d81305b2a9c6b622ca1b.zip
tpm: change 'tpm_suspend_pcr' to be module parameter
Fix the following warning: drivers/char/tpm/tpm.c:1085: warning: `tpm_suspend_setup' defined but not used and make the workaround operable in case when TPM is compiled as a module. As a side-effect the option will be called tpm.suspend_pcr. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Cc: Rajiv Andrade <srajiv@linux.vnet.ibm.com> Cc: David Safford <safford@watson.ibm.com> Cc: James Morris <jmorris@namei.org> Cc: Debora Velarde <debora@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Morris <jmorris@namei.org>
-rw-r--r--drivers/char/tpm/tpm.c22
1 files changed, 10 insertions, 12 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 05ad4a17a28..7c4133582db 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -47,6 +47,16 @@ enum tpm_duration {
#define TPM_MAX_PROTECTED_ORDINAL 12
#define TPM_PROTECTED_ORDINAL_MASK 0xFF
+/*
+ * Bug workaround - some TPM's don't flush the most
+ * recently changed pcr on suspend, so force the flush
+ * with an extend to the selected _unused_ non-volatile pcr.
+ */
+static int tpm_suspend_pcr;
+module_param_named(suspend_pcr, tpm_suspend_pcr, uint, 0644);
+MODULE_PARM_DESC(suspend_pcr,
+ "PCR to use for dummy writes to faciltate flush on suspend.");
+
static LIST_HEAD(tpm_chip_list);
static DEFINE_SPINLOCK(driver_lock);
static DECLARE_BITMAP(dev_mask, TPM_NUM_DEVICES);
@@ -1077,18 +1087,6 @@ static struct tpm_input_header savestate_header = {
.ordinal = TPM_ORD_SAVESTATE
};
-/* Bug workaround - some TPM's don't flush the most
- * recently changed pcr on suspend, so force the flush
- * with an extend to the selected _unused_ non-volatile pcr.
- */
-static int tpm_suspend_pcr;
-static int __init tpm_suspend_setup(char *str)
-{
- get_option(&str, &tpm_suspend_pcr);
- return 1;
-}
-__setup("tpm_suspend_pcr=", tpm_suspend_setup);
-
/*
* We are about to suspend. Save the TPM state
* so that it can be restored.