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authorRajiv Andrade <srajiv@linux.vnet.ibm.com>2010-06-23 12:18:56 -0700
committerJames Morris <jmorris@namei.org>2010-07-26 10:25:45 +1000
commit59f6fbe4291fcc078ba26ce4edf8373a7620a13a (patch)
tree1ca4be1a5cb996ace569fccded07e502a70bd32e /drivers/char
parent86c65a7857896b1de99628ad392556965c4841e6 (diff)
tpm_tis: fix subsequent suspend failures
Fix subsequent suspends by issuing tpm_continue_selftest during resume. Otherwise, the tpm chip seems to be not fully initialized and will reject the save state command during suspend, thus preventing the whole system to suspend. Addresses https://bugzilla.kernel.org/show_bug.cgi?id=16256 Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com> Cc: James Morris <jmorris@namei.org> Cc: Debora Velarde <debora@linux.vnet.ibm.com> Cc: David Safford <safford@watson.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/tpm/tpm_tis.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 24314a9cffe8..1030f8420137 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -623,7 +623,14 @@ static int tpm_tis_pnp_suspend(struct pnp_dev *dev, pm_message_t msg)
static int tpm_tis_pnp_resume(struct pnp_dev *dev)
{
- return tpm_pm_resume(&dev->dev);
+ struct tpm_chip *chip = pnp_get_drvdata(dev);
+ int ret;
+
+ ret = tpm_pm_resume(&dev->dev);
+ if (!ret)
+ tpm_continue_selftest(chip);
+
+ return ret;
}
static struct pnp_device_id tpm_pnp_tbl[] __devinitdata = {