On Sun, 2020-03-22 at 02:31 +0530, Nishant Malpani wrote: > Provide more suitable format specifiers while printing error logs. > Discards the use of unnecessary explicit casting and prints symbolic > error name which might prove to be convenient during debugging. 'Use suitable format specifier' is obscure and not specific. All the subjects should likely be something like [PATCH] subsystem: Use vsprintf extension %pe for symbolic error name > diff --git a/drivers/iio/accel/kxsd9-i2c.c b/drivers/iio/accel/kxsd9-i2c.c [] > @@ -21,8 +21,8 @@ static int kxsd9_i2c_probe(struct i2c_client *i2c, > > regmap = devm_regmap_init_i2c(i2c, &config); > if (IS_ERR(regmap)) { > - dev_err(&i2c->dev, "Failed to register i2c regmap %d\n", > - (int)PTR_ERR(regmap)); > + dev_err(&i2c->dev, "Failed to register i2c regmap %pe\n", > + regmap; And this could use a separator between regmap and errname like dev_err(&i2c->dev, "Failed to register i2c regmap: %pe\n", or dev_err(&i2c->dev, "Failed to register i2c regmap - %pe\n",