On Fri, Jan 31, 2020 at 10:15:14AM +0200, Andy Shevchenko wrote: > On Fri, Jan 31, 2020 at 7:03 AM Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote: > > > > The device_get_phy_mode() was returning negative error codes on > > failure and positive phy_interface_t values on success. The problem is > > that the phy_interface_t type is an enum which GCC treats as unsigned. > > This lead to recurring signedness bugs where we check "if (phy_mode < 0)" > > and "phy_mode" is unsigned. > > > > In the commit 0c65b2b90d13 ("net: of_get_phy_mode: Change API to solve > > int/unit warnings") we updated of_get_phy_mode() take a pointer to > > phy_mode and only return zero on success and negatives on failure. This > > patch does the same thing for device_get_phy_mode(). Plus it's just > > nice for the API to be the same in both places. > > > > + err = device_get_phy_mode(dev, &config->phy_interface); > > > + if (err) > > + config->phy_interface = PHY_INTERFACE_MODE_NA; > > Do you need these? It seems the default settings when error appears. > We don't need it, but I thought it made things more readable. regards, dan carpenter