capi: fix sparse warnings using integer as NULL pointer

[safe/jmp/linux-2.6] / drivers / isdn / capi / capifs.c

diff --git a/drivers/isdn/capi/capifs.c b/drivers/isdn/capi/capifs.c
index 2dd1b57..eafe0e9 100644 (file)
--- a/drivers/isdn/capi/capifs.c
+++ b/drivers/isdn/capi/capifs.c
@@ -52,6 +52,7 @@ static int capifs_remount(struct super_block *s, int *flags, char *data)
        gid_t gid = 0;
        umode_t mode = 0600;
        char *this_char;
+       char *new_opt = kstrdup(data, GFP_KERNEL);
 
        this_char = NULL;
        while ((this_char = strsep(&data, ",")) != NULL) {
@@ -72,11 +73,16 @@ static int capifs_remount(struct super_block *s, int *flags, char *data)
                        return -EINVAL;
                }
        }
+
+       kfree(s->s_options);
+       s->s_options = new_opt;
+
        config.setuid  = setuid;
        config.setgid  = setgid;
        config.uid     = uid;
        config.gid     = gid;
        config.mode    = mode;
+
        return 0;
 }
 
@@ -84,6 +90,7 @@ static struct super_operations capifs_sops =
 {
        .statfs         = simple_statfs,
        .remount_fs     = capifs_remount,
+       .show_options   = generic_show_options,
 };
 
 
@@ -182,9 +189,9 @@ static int __init capifs_init(void)
        char *p;
        int err;
 
-       if ((p = strchr(revision, ':')) != 0 && p[1]) {
+       if ((p = strchr(revision, ':')) != NULL && p[1]) {
                strlcpy(rev, p + 2, sizeof(rev));
-               if ((p = strchr(rev, '$')) != 0 && p > rev)
+               if ((p = strchr(rev, '$')) != NULL && p > rev)
                   *(p-1) = 0;
        } else
                strcpy(rev, "1.0");