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isofs: Adjust four checks for null pointers

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The script “checkpatch.pl” pointed information out like the following.

Comparison to NULL could be written !...

Thus fix the affected source code places.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Markus Elfring 2017-08-18 21:47:14 +02:00 committed by Jan Kara
parent 8898662268
commit e96e8a1dc1
1 changed files with 4 additions and 4 deletions
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8
fs/isofs/inode.c
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@ -96,7 +96,7 @@ static int __init init_inodecache(void)
0, (SLAB_RECLAIM_ACCOUNT|
SLAB_MEM_SPREAD|SLAB_ACCOUNT),
init_once);
if (isofs_inode_cachep == NULL)
if (!isofs_inode_cachep)
return -ENOMEM;
return 0;
}
@ -678,7 +678,7 @@ static int isofs_fill_super(struct super_block *s, void *data, int silent)
if (isonum_711(vdp->type) == ISO_VD_END)
break;
if (isonum_711(vdp->type) == ISO_VD_PRIMARY) {
if (pri == NULL) {
if (!pri) {
pri = (struct iso_primary_descriptor *)vdp;
/* Save the buffer in case we need it ... */
pri_bh = bh;
@ -742,7 +742,7 @@ root_found:
goto out_freebh;
}
if (joliet_level && (pri == NULL || !opt.rock)) {
if (joliet_level && (!pri || !opt.rock)) {
/* This is the case of Joliet with the norock mount flag.
* A disc with both Joliet and Rock Ridge is handled later
*/
@ -1320,7 +1320,7 @@ static int isofs_read_inode(struct inode *inode, int relocated)
int frag1 = bufsize - offset;
tmpde = kmalloc(de_len, GFP_KERNEL);
if (tmpde == NULL) {
if (!tmpde) {
ret = -ENOMEM;
goto fail;
}