Re: [RFC] Remove or convert empty ioctls ?

[Jeff Garzik]

On 10/15/2009 11:31 AM, Alan Cox wrote:
> EINVAL means you used an ioctl that is correct for the driver but that
> for some reason the driver didn't like it.

Precisely.

The driver author proactively chose to implement the ioctl and return a 
value other than ENOTTY.

It is invalid to assume that all such cases are a direct result of 
author mistakes or ignorance.

	Jeff



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