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efivarfs: efivarfs_create() ensure we drop our reference on inode on error

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Signed-off-by: Andy Whitcroft <apw@canonical.com>
Acked-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
This commit is contained in:
Andy Whitcroft 2012-10-11 11:32:18 +01:00 committed by Matt Fleming
parent d142df03a7
commit 45a937a883
1 changed files with 9 additions and 5 deletions
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14
drivers/firmware/efivars.c
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@ -866,7 +866,7 @@ static void efivarfs_hex_to_guid(const char *str, efi_guid_t *guid)
static int efivarfs_create(struct inode *dir, struct dentry *dentry,
umode_t mode, bool excl)
{
struct inode *inode = efivarfs_get_inode(dir->i_sb, dir, mode, 0);
struct inode *inode;
struct efivars *efivars = &__efivars;
struct efivar_entry *var;
int namelen, i = 0, err = 0;
@ -874,13 +874,15 @@ static int efivarfs_create(struct inode *dir, struct dentry *dentry,
if (dentry->d_name.len < 38)
return -EINVAL;
inode = efivarfs_get_inode(dir->i_sb, dir, mode, 0);
if (!inode)
return -ENOSPC;
var = kzalloc(sizeof(struct efivar_entry), GFP_KERNEL);
if (!var)
return -ENOMEM;
if (!var) {
err = -ENOMEM;
goto out;
}
namelen = dentry->d_name.len - GUID_LEN;
@ -908,8 +910,10 @@ static int efivarfs_create(struct inode *dir, struct dentry *dentry,
d_instantiate(dentry, inode);
dget(dentry);
out:
if (err)
if (err) {
kfree(var);
iput(inode);
}
return err;
}