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authorAl Viro <viro@zeniv.linux.org.uk>2014-06-12 00:27:11 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2014-06-12 00:28:09 -0400
commit9c1d5284c79fea050f115eadeec1dd1758e5c630 (patch)
tree4d16fd5aad7ff4931e985c0128c5747f23561f8a /drivers/char
parent5f073850602084fbcbb987948ff3e70ae273f7d2 (diff)
parent9f12600fe425bc28f0ccba034a77783c09c15af4 (diff)
Merge commit '9f12600fe425bc28f0ccba034a77783c09c15af4' into for-linus
Backmerge of dcache.c changes from mainline. It's that, or complete rebase... Conflicts: fs/splice.c Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/random.c7
-rw-r--r--drivers/char/tpm/tpm_ppi.c8
2 files changed, 8 insertions, 7 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 6b75713d953..102c50d3890 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -995,8 +995,11 @@ retry:
ibytes = min_t(size_t, ibytes, have_bytes - reserved);
if (ibytes < min)
ibytes = 0;
- entropy_count = max_t(int, 0,
- entropy_count - (ibytes << (ENTROPY_SHIFT + 3)));
+ if (have_bytes >= ibytes + reserved)
+ entropy_count -= ibytes << (ENTROPY_SHIFT + 3);
+ else
+ entropy_count = reserved << (ENTROPY_SHIFT + 3);
+
if (cmpxchg(&r->entropy_count, orig, entropy_count) != orig)
goto retry;
diff --git a/drivers/char/tpm/tpm_ppi.c b/drivers/char/tpm/tpm_ppi.c
index b3ea223585b..61dcc8011ec 100644
--- a/drivers/char/tpm/tpm_ppi.c
+++ b/drivers/char/tpm/tpm_ppi.c
@@ -328,13 +328,11 @@ int tpm_add_ppi(struct kobject *parent)
/* Cache TPM ACPI handle and version string */
acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
ppi_callback, NULL, NULL, &tpm_ppi_handle);
- if (tpm_ppi_handle == NULL)
- return -ENODEV;
-
- return sysfs_create_group(parent, &ppi_attr_grp);
+ return tpm_ppi_handle ? sysfs_create_group(parent, &ppi_attr_grp) : 0;
}
void tpm_remove_ppi(struct kobject *parent)
{
- sysfs_remove_group(parent, &ppi_attr_grp);
+ if (tpm_ppi_handle)
+ sysfs_remove_group(parent, &ppi_attr_grp);
}