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| author |   Tim Gardner <tim.gardner@canonical.com> | 2014-08-28 11:26:03 -0600 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2014-10-09 02:39:10 -0400 |
| commit | b8850d1fa8e2f6653e57daf6d08e58c5f5eb2c85 (patch) | |
| tree | 5648df7e01da32afbbf962a8c73b54111fd50f5f /fs/compat.c | |
| parent | saner perf_atoll() (diff) | |
| download | wireguard-linux-b8850d1fa8e2f6653e57daf6d08e58c5f5eb2c85.tar.xz wireguard-linux-b8850d1fa8e2f6653e57daf6d08e58c5f5eb2c85.zip | |
fs: namespace: suppress 'may be used uninitialized' warnings
The gcc version 4.9.1 compiler complains Even though it isn't possible for
these variables to not get initialized before they are used.
fs/namespace.c: In function ‘SyS_mount’:
fs/namespace.c:2720:8: warning: ‘kernel_dev’ may be used uninitialized in this function [-Wmaybe-uninitialized]
ret = do_mount(kernel_dev, kernel_dir->name, kernel_type, flags,
^
fs/namespace.c:2699:8: note: ‘kernel_dev’ was declared here
char *kernel_dev;
^
fs/namespace.c:2720:8: warning: ‘kernel_type’ may be used uninitialized in this function [-Wmaybe-uninitialized]
ret = do_mount(kernel_dev, kernel_dir->name, kernel_type, flags,
^
fs/namespace.c:2697:8: note: ‘kernel_type’ was declared here
char *kernel_type;
^
Fix the warnings by simplifying copy_mount_string() as suggested by Al Viro.
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/compat.c')
| -rw-r--r-- | fs/compat.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/compat.c b/fs/compat.c index 66d3d3c6b4b2..6205c247a6e3 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -797,8 +797,9 @@ COMPAT_SYSCALL_DEFINE5(mount, const char __user *, dev_name, struct filename *dir; int retval; - retval = copy_mount_string(type, &kernel_type); - if (retval < 0) + kernel_type = copy_mount_string(type); + retval = PTR_ERR(kernel_type); + if (IS_ERR(kernel_type)) goto out; dir = getname(dir_name); @@ -806,8 +807,9 @@ COMPAT_SYSCALL_DEFINE5(mount, const char __user *, dev_name, if (IS_ERR(dir)) goto out1; - retval = copy_mount_string(dev_name, &kernel_dev); - if (retval < 0) + kernel_dev = copy_mount_string(dev_name); + retval = PTR_ERR(kernel_dev); + if (IS_ERR(kernel_dev)) goto out2; retval = copy_mount_options(data, &data_page); |