diff options
| author | H. Peter Anvin <hpa@linux.intel.com> | 2013-06-28 15:26:17 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2013-06-28 15:26:17 -0700 |
| commit | 9f84b6267ccde1bebe3f9cd40a91716b5ece5e20 (patch) | |
| tree | b51dcf9fb1b7205ed8134ad1169e73719897163d /fs/efivarfs/file.c | |
| parent | 719038de98bc8479b771c582a1e4a1e86079da22 (diff) | |
| parent | 5f8c4218148822fde6eebbeefc34bd0a6061e031 (diff) | |
Merge remote-tracking branch 'origin/x86/fpu' into queue/x86/cpu
Use the union of 3.10 x86/cpu and x86/fpu as baseline.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'fs/efivarfs/file.c')
| -rw-r--r-- | fs/efivarfs/file.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/fs/efivarfs/file.c b/fs/efivarfs/file.c index bfb531564319..8dd524f32284 100644 --- a/fs/efivarfs/file.c +++ b/fs/efivarfs/file.c @@ -44,8 +44,11 @@ static ssize_t efivarfs_file_write(struct file *file, bytes = efivar_entry_set_get_size(var, attributes, &datasize, data, &set); - if (!set && bytes) + if (!set && bytes) { + if (bytes == -ENOENT) + bytes = -EIO; goto out; + } if (bytes == -ENOENT) { drop_nlink(inode); @@ -76,7 +79,14 @@ static ssize_t efivarfs_file_read(struct file *file, char __user *userbuf, int err; err = efivar_entry_size(var, &datasize); - if (err) + + /* + * efivarfs represents uncommitted variables with + * zero-length files. Reading them should return EOF. + */ + if (err == -ENOENT) + return 0; + else if (err) return err; data = kmalloc(datasize + sizeof(attributes), GFP_KERNEL); |