Re: [PATCH v2 07/10] staging: exfat: Clean up return codes - FFS_SUCCESS

[Dan Carpenter]

On Mon, Nov 04, 2019 at 05:53:55AM -0500, Valdis KlÄtnieks wrote:
> On Mon, 04 Nov 2019 13:04:14 +0300, Dan Carpenter said:
> > On Sun, Nov 03, 2019 at 08:45:03PM -0500, Valdis Kletnieks wrote:
> > > -	if (sector_read(sb, sec, &bp->buf_bh, 1) != FFS_SUCCESS) {
> > > +	if (sector_read(sb, sec, &bp->buf_bh, 1) != 0) {
> >
> > It's better to just remove the "!= 0" double negative.  != 0 should be
> > used when we are talking about the number zero as in "cnt != 0" and for
> > "strcmp(foo, bar) != 0" where it means that "foo != bar".
> 
> "Fix up ==0 and !=0" is indeed on the to-do list.
> 
> This patch converted 82 uses of FFS_SUCCESS, of which 33 had the != idiom in
> use.  Meanwhile, overall there's 53 '!= 0' and 95 '== 0' uses.
> 
> In other words, even if I fixed all of those that were involved in this patch,
> there would *still* be more patching to do.

Very good.  Sounds like the plan.

regards,
dan carpenter