On Do, 2019-03-28 at 16:50 +0300, Dan Carpenter wrote:
> External E-Mail
>
>
> On Thu, Mar 28, 2019 at 02:17:29PM +0100, Christian Gromm wrote:
> >
> > +static ssize_t mdev_link_direction_store(struct config_item *item,
> > + const char *page, size_t
> > count)
> > +{
> > + struct mdev_link *mdev_link = to_mdev_link(item);
> > +
> > + if (sysfs_streq(page, "dir_rx") && sysfs_streq(page, "rx")
> > &&
> > + sysfs_streq(page, "dir_tx") && sysfs_streq(page,
> > "tx"))
> These tests are reversed. It will never return -EINVAL because one
> string can't be four things.
OMG, that was braindead. Sorry for the inconvenience. I'll fix that up.
thanks,
Chris
>
> if (!sysfs_streq(page, "dir_rx") && !sysfs_streq(page, "rx") &&
> !sysfs_streq(page, "dir_tx") && !sysfs_streq(page, "tx"))
> return -EINVAL;
>
> The sysfs_streq() return true if the strings are equal. The strcmp()
> functions less intuitive and they should be used like this:
>
> if (strcmp(foo, bar) < 0) { // <-- foo < bar
> if (strcmp(foo, bar) != 0) { // <-- foo != bar
> if (strcmp(foo, bar) == 0) { // <-- foo == bar
>
> The other streq() tests have the same issue.
>
> regards,
> dan carpenter
>
>
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