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authorLinus Torvalds <torvalds@linux-foundation.org>2017-04-09 09:03:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-04-09 09:03:51 -0700
commit5b50be743f495b000891d430ecba7372cc59bb64 (patch)
treea6559ebf1669bc76494a9f5722d19868407eb539
parent62e1fd08ede3ea2af25b3aa5f81c6c525bac2ce3 (diff)
parent27f395b857abee5bced8356d39e1a491ff08748a (diff)
Merge tag 'driver-core-4.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH: "Here are 3 small fixes for 4.11-rc6. One resolves a reported issue with sysfs files that NeilBrown found, one is a documenatation fix for the stable kernel rules, and the last is a small MAINTAINERS file update for kernfs" * tag 'driver-core-4.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: MAINTAINERS: separate out kernfs maintainership sysfs: be careful of error returns from ops->show() Documentation: stable-kernel-rules: fix stable-tag format
-rw-r--r--Documentation/process/stable-kernel-rules.rst2
-rw-r--r--MAINTAINERS11
-rw-r--r--fs/sysfs/file.c6
3 files changed, 14 insertions, 5 deletions
diff --git a/Documentation/process/stable-kernel-rules.rst b/Documentation/process/stable-kernel-rules.rst
index 11ec2d93a5e0..61e9c78bd6d1 100644
--- a/Documentation/process/stable-kernel-rules.rst
+++ b/Documentation/process/stable-kernel-rules.rst
@@ -124,7 +124,7 @@ specified in the following format in the sign-off area:
.. code-block:: none
- Cc: <stable@vger.kernel.org> # 3.3.x-
+ Cc: <stable@vger.kernel.org> # 3.3.x
The tag has the meaning of:
diff --git a/MAINTAINERS b/MAINTAINERS
index 882ea01b4efe..fdd5350fe261 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4117,14 +4117,13 @@ F: drivers/block/drbd/
F: lib/lru_cache.c
F: Documentation/blockdev/drbd/
-DRIVER CORE, KOBJECTS, DEBUGFS, KERNFS AND SYSFS
+DRIVER CORE, KOBJECTS, DEBUGFS AND SYSFS
M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
S: Supported
F: Documentation/kobject.txt
F: drivers/base/
F: fs/debugfs/
-F: fs/kernfs/
F: fs/sysfs/
F: include/linux/debugfs.h
F: include/linux/kobj*
@@ -7209,6 +7208,14 @@ F: arch/mips/include/uapi/asm/kvm*
F: arch/mips/include/asm/kvm*
F: arch/mips/kvm/
+KERNFS
+M: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+M: Tejun Heo <tj@kernel.org>
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
+S: Supported
+F: include/linux/kernfs.h
+F: fs/kernfs/
+
KEXEC
M: Eric Biederman <ebiederm@xmission.com>
W: http://kernel.org/pub/linux/utils/kernel/kexec/
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index b803213d1307..39c75a86c67f 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -108,7 +108,7 @@ static ssize_t sysfs_kf_read(struct kernfs_open_file *of, char *buf,
{
const struct sysfs_ops *ops = sysfs_file_ops(of->kn);
struct kobject *kobj = of->kn->parent->priv;
- size_t len;
+ ssize_t len;
/*
* If buf != of->prealloc_buf, we don't know how
@@ -117,13 +117,15 @@ static ssize_t sysfs_kf_read(struct kernfs_open_file *of, char *buf,
if (WARN_ON_ONCE(buf != of->prealloc_buf))
return 0;
len = ops->show(kobj, of->kn->priv, buf);
+ if (len < 0)
+ return len;
if (pos) {
if (len <= pos)
return 0;
len -= pos;
memmove(buf, buf + pos, len);
}
- return min(count, len);
+ return min_t(ssize_t, count, len);
}
/* kernfs write callback for regular sysfs files */