On 13.08.24 14:43, Greg Kroah-Hartman wrote: >>> I don't understand, why can't dev_set_name() be called here? >>> [...] > > But step back, why is this needed at all anyway? No other subsystem or > driver needs/wants this, what makes this api so special? Why not figure > out your name beforehand? > > thanks, Vasily, the following update to Heiko's patch does not touch lib/kobject.c According to a quick test it still solves the original issue and does compile with W=1 and iucv as a module. diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c index 64102a31b569..6a819ba4ccab 100644 --- a/net/iucv/iucv.c +++ b/net/iucv/iucv.c @@ -86,13 +86,17 @@ struct device *iucv_alloc_device(const struct attribute_group **attrs, { struct device *dev; va_list vargs; + char buf[20]; int rc; dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) goto out_error; va_start(vargs, fmt); - rc = kobject_set_name_vargs(&dev->kobj, fmt, vargs); + rc = vsnprintf(buf, 20, fmt, vargs); + if (!rc) + rc = dev_set_name(dev, buf); va_end(vargs); if (rc) goto out_error; Maybe Greg has somethign like this in mind?