Re: [PATCH] drivers: pnp: proc.c: Handle errors while attaching devices

On Sun, 25 Apr 2021 01:13:01 +0530, Anupama K Patil said:

Changed sprintf() to the kernel-space function scnprintf() as it returns the actual number of bytes written.

+ if (!bus->procdir) { + scnprintf(name, 16, "%02x", bus->number);

+ scnprintf(name, 16, "%02x", dev->number);

Why do this when you don't *use* the number of bytes written, but instead ignore the value returned? For bonus points: Given the %02x format, under what conditions can it return a value other than 2?