Question about handling return value of device_create_file function

[Michal Piotrowski]

Hi,

I have noticed that sparse generates a lot of "ignoring return value
of 'device_create_file'" warnings.

(cat sparse.txt | grep -c "device_create_file"
1231 :)

I want to fix this warnings, but I'm wondering how to properly handle
return value of device_create_file function.

The shortest way.

int foo()
{
	int error;

	[..]

	error = device_create_file(&bar, &bas)

	if (error)
		return error;
}

A bit longer way.

int foo()
{
	int error;

	[..]

	error = device_create_file(&bar, &bas)

	if (error) {
		subsystem_remove_device(bar);
		return error;
	}
}

Any hints?

Regards,
Michal

--
Michal K. K. Piotrowski
LTG - Linux Testers Group
(http://www.stardust.webpages.pl/ltg/wiki/)
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