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nfs: fix null checking in nfs_get_option_str() 

The following null pointer check is broken.

	*option = match_strdup(args);
	return !option;

The pointer `option' must be non-null, and thus `!option' is always false.
Use `!*option' instead.

The bug was introduced in commit c5cb09b6f8 ("Cleanup: Factor out some
cut-and-paste code.").

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Xi Wang 2013-01-04 03:22:57 -05:00 committed by Trond Myklebust
parent 39e88fcfb1
commit e25fbe380c
1 changed files with 1 additions and 1 deletions
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2
fs/nfs/super.c
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@ -1152,7 +1152,7 @@ static int nfs_get_option_str(substring_t args[], char **option)
{
kfree(*option);
*option = match_strdup(args);
return !option;
return !*option;
}
static int nfs_get_option_ul(substring_t args[], unsigned long *option)