Hi Amit,
On 26/04/2019 21:15, Amit Kucheria wrote: > When registering a thermal zone device, we currently return -EINVAL in > four cases. This is makes is a little hard to debug the real cause of > the failure. > > Print some error messages to make it easier for developer to figure out > what happened. Adding "Error" in the pr_err message is redundant. However I'm not sure adding more traces is really important, that will add more RO data for a function which is supposed to be called from wise code. > Signed-off-by: Amit Kucheria <[email protected]> > --- > drivers/thermal/thermal_core.c | 17 +++++++++++++---- > 1 file changed, 13 insertions(+), 4 deletions(-) > > diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c > index 6590bb5cb688..51cb6d2bf7a2 100644 > --- a/drivers/thermal/thermal_core.c > +++ b/drivers/thermal/thermal_core.c > @@ -1189,17 +1189,26 @@ thermal_zone_device_register(const char *type, int > trips, int mask, > int count; > struct thermal_governor *governor; > > - if (!type || strlen(type) == 0) > + if (!type || strlen(type) == 0) { > + pr_err("Error: No thermal zone type defined"); > return ERR_PTR(-EINVAL); > + } > > - if (type && strlen(type) >= THERMAL_NAME_LENGTH) > + if (type && strlen(type) >= THERMAL_NAME_LENGTH) { > + pr_err("Error: Thermal zone name (%s) too long, should be under > %d chars", > + type, THERMAL_NAME_LENGTH); > return ERR_PTR(-EINVAL); > + } May be take the opportunity to remove the test 'type' is true because it is always true after the previous test? > - if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips) > + if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips) { > + pr_err("Error: Incorrect number of thermal trips"); > return ERR_PTR(-EINVAL); > + } > > - if (!ops) > + if (!ops) { > + pr_err("Error: Thermal zone device ops not defined"); > return ERR_PTR(-EINVAL); > + } > > if (trips > 0 && (!ops->get_trip_type || !ops->get_trip_temp)> > return ERR_PTR(-EINVAL); > -- <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog
