Revert: tpm_tis: Use timeouts returned from TPM

This is a revert of commit 9b29050f8f75916f974a2d231ae5d3cd59792296
upstream which has been found to prevent suspend from working on a
number of systems.

Thanks to Jiri Slaby <jirislaby@gmail.com> for tracing this down.

Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Rafael Wysocki <rjw@sisk.pl>
Cc: Stefan Berger <stefanb@linux.vnet.ibm.com>
Cc: Guillaume Chazarain <guichaz@gmail.com>
Cc: Rajiv Andrade <srajiv@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 55d0466..d5284bc 100644 (file)
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -577,11 +577,9 @@ duration:
        if (rc)
                return;
 
-       if (be32_to_cpu(tpm_cmd.header.out.return_code) != 0 ||
-           be32_to_cpu(tpm_cmd.header.out.length)
-           != sizeof(tpm_cmd.header.out) + sizeof(u32) + 3 * sizeof(u32))
+       if (be32_to_cpu(tpm_cmd.header.out.return_code)
+           != 3 * sizeof(u32))
                return;
-
        duration_cap = &tpm_cmd.params.getcap_out.cap.duration;
        chip->vendor.duration[TPM_SHORT] =
            usecs_to_jiffies(be32_to_cpu(duration_cap->tpm_short));
@@ -925,18 +923,6 @@ ssize_t tpm_show_caps_1_2(struct device * dev,
 }
 EXPORT_SYMBOL_GPL(tpm_show_caps_1_2);
 
-ssize_t tpm_show_timeouts(struct device *dev, struct device_attribute *attr,
-                         char *buf)
-{
-       struct tpm_chip *chip = dev_get_drvdata(dev);
-
-       return sprintf(buf, "%d %d %d\n",
-                      jiffies_to_usecs(chip->vendor.duration[TPM_SHORT]),
-                      jiffies_to_usecs(chip->vendor.duration[TPM_MEDIUM]),
-                      jiffies_to_usecs(chip->vendor.duration[TPM_LONG]));
-}
-EXPORT_SYMBOL_GPL(tpm_show_timeouts);
-
 ssize_t tpm_store_cancel(struct device *dev, struct device_attribute *attr,
                        const char *buf, size_t count)
 {

diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index ba1779c..792868d 100644 (file)
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -56,8 +56,6 @@ extern ssize_t tpm_show_owned(struct device *, struct device_attribute *attr,
                                char *);
 extern ssize_t tpm_show_temp_deactivated(struct device *,
                                         struct device_attribute *attr, char *);
-extern ssize_t tpm_show_timeouts(struct device *,
-                                struct device_attribute *attr, char *);
 
 struct tpm_chip;
 

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index 0d1d38e..dd21df5 100644 (file)
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -376,7 +376,6 @@ static DEVICE_ATTR(temp_deactivated, S_IRUGO, tpm_show_temp_deactivated,
                   NULL);
 static DEVICE_ATTR(caps, S_IRUGO, tpm_show_caps_1_2, NULL);
 static DEVICE_ATTR(cancel, S_IWUSR | S_IWGRP, NULL, tpm_store_cancel);
-static DEVICE_ATTR(timeouts, S_IRUGO, tpm_show_timeouts, NULL);
 
 static struct attribute *tis_attrs[] = {
        &dev_attr_pubek.attr,
@@ -386,8 +385,7 @@ static struct attribute *tis_attrs[] = {
        &dev_attr_owned.attr,
        &dev_attr_temp_deactivated.attr,
        &dev_attr_caps.attr,
-       &dev_attr_cancel.attr,
-       &dev_attr_timeouts.attr, NULL,
+       &dev_attr_cancel.attr, NULL,
 };
 
 static struct attribute_group tis_attr_grp = {