tpm: xen-tpmfront: Remove the locality sysfs attribute

Upon deeper review it was agreed to remove the driver-unique
'locality' sysfs attribute before it is present in a released
kernel.

The attribute was introduced in e2683957fb268c6b29316fd9e7191e13239a30a5
during the 3.12 merge window, so this patch needs to go in before
3.12 is released.

The hope is to have a well defined locality API that all the other
locality aware drivers can use, perhaps in 3.13.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>

diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c
index 6f2fe2b..06189e5 100644 (file)
--- a/drivers/char/tpm/xen-tpmfront.c
+++ b/drivers/char/tpm/xen-tpmfront.c
@@ -142,32 +142,6 @@ static int vtpm_recv(struct tpm_chip *chip, u8 *buf, size_t count)
        return length;
 }
 
-ssize_t tpm_show_locality(struct device *dev, struct device_attribute *attr,
-                         char *buf)
-{
-       struct tpm_chip *chip = dev_get_drvdata(dev);
-       struct tpm_private *priv = TPM_VPRIV(chip);
-       u8 locality = priv->shr->locality;
-
-       return sprintf(buf, "%d\n", locality);
-}
-
-ssize_t tpm_store_locality(struct device *dev, struct device_attribute *attr,
-                       const char *buf, size_t len)
-{
-       struct tpm_chip *chip = dev_get_drvdata(dev);
-       struct tpm_private *priv = TPM_VPRIV(chip);
-       u8 val;
-
-       int rv = kstrtou8(buf, 0, &val);
-       if (rv)
-               return rv;
-
-       priv->shr->locality = val;
-
-       return len;
-}
-
 static const struct file_operations vtpm_ops = {
        .owner = THIS_MODULE,
        .llseek = no_llseek,
@@ -188,8 +162,6 @@ static DEVICE_ATTR(caps, S_IRUGO, tpm_show_caps, NULL);
 static DEVICE_ATTR(cancel, S_IWUSR | S_IWGRP, NULL, tpm_store_cancel);
 static DEVICE_ATTR(durations, S_IRUGO, tpm_show_durations, NULL);
 static DEVICE_ATTR(timeouts, S_IRUGO, tpm_show_timeouts, NULL);
-static DEVICE_ATTR(locality, S_IRUGO | S_IWUSR, tpm_show_locality,
-               tpm_store_locality);
 
 static struct attribute *vtpm_attrs[] = {
        &dev_attr_pubek.attr,
@@ -202,7 +174,6 @@ static struct attribute *vtpm_attrs[] = {
        &dev_attr_cancel.attr,
        &dev_attr_durations.attr,
        &dev_attr_timeouts.attr,
-       &dev_attr_locality.attr,
        NULL,
 };