Re: [PATCH v3.1] [resend] Resurrect Intel740 driver: i740fb

[Tabi Timur-B04825]

On Sat, Dec 3, 2011 at 3:45 PM, Florian Tobias Schandinat
<FlorianSchandinat@xxxxxx> wrote:
>
>> +     return !!(i740inreg(par, XRX, REG_DDC_STATE) & DDC_SCL);
>
> Why "!!"?

This is a trick that guarantees that the return value is either 0 or
1.  Without the !!, the return value will be either 0 or DDC_SCL.

-- 
Timur Tabi
Linux kernel developer at Freescale
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