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| author | Li Zefan <lizf@cn.fujitsu.com> | 2009-04-08 15:07:30 +0800 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-04-20 23:02:50 -0400 |
| commit | 1c8542c7bb239ef02fe21477acd9cdac04c1b640 (patch) | |
| tree | 45d9f29f241203608866f8246a699bc00b6ecf6b /fs/sysfs/bin.c | |
| parent | dae7b665cf6d6e6e733f1c9c16cf55547dd37e33 (diff) | |
| download | linux-3.10-1c8542c7bb239ef02fe21477acd9cdac04c1b640.tar.gz linux-3.10-1c8542c7bb239ef02fe21477acd9cdac04c1b640.tar.bz2 linux-3.10-1c8542c7bb239ef02fe21477acd9cdac04c1b640.zip | |
sysfs: use memdup_user()
Remove open-coded memdup_user().
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/sysfs/bin.c')
| -rw-r--r-- | fs/sysfs/bin.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/fs/sysfs/bin.c b/fs/sysfs/bin.c index 93e0c0281d4..9345806c885 100644 --- a/fs/sysfs/bin.c +++ b/fs/sysfs/bin.c @@ -157,14 +157,9 @@ static ssize_t write(struct file *file, const char __user *userbuf, count = size - offs; } - temp = kmalloc(count, GFP_KERNEL); - if (!temp) - return -ENOMEM; - - if (copy_from_user(temp, userbuf, count)) { - count = -EFAULT; - goto out_free; - } + temp = memdup_user(userbuf, count); + if (IS_ERR(temp)) + return PTR_ERR(temp); mutex_lock(&bb->mutex); @@ -176,8 +171,6 @@ static ssize_t write(struct file *file, const char __user *userbuf, if (count > 0) *off = offs + count; -out_free: - kfree(temp); return count; } |