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Re: [Qemu-devel] [PATCH 6/9] eepro100: Support compilation without EEPRO


From: Stefan Weil
Subject: Re: [Qemu-devel] [PATCH 6/9] eepro100: Support compilation without EEPROM
Date: Wed, 07 Apr 2010 09:02:06 +0200
User-agent: Mozilla-Thunderbird 2.0.0.22 (X11/20090707)

Paul Brook schrieb:
>> To emulate hardware without an EEPROM,
>> EEPROM_SIZE may be set to 0.
>
> If might, but it isn't.
>
> This patch introduces a condition that will never be false. Please
> don't do
> that. I consider code that is never used to be actively harmful. Any
> feature
> that requires the user hack the source may as well not exist. The only
> possible exception is debug output intended solely for qemu developers.
>
> If there's something worth noting for future reference then add a proper
> comment, if necessary marked as TODO/FIXME.
>
> Paul

In this case, it is code which is normally always used,
so maybe it is a little less harmful :-)

Anyway - Richard already gave a good feedback on the same topic.

His feedback convinced me that adding an eeprom size or model
property as a device option would be the better way to
support both developer needs (I want to make tests with
no eeprom) and user needs (normally, an eeprom is
available). The preprocessor #if would be replaced by
a normal C if.

I'll do this in a future patch.

Michael, I suggest either omitting this patch or adding a
TODO comment to the preprocessor #if like this:

#if EEPROM_SIZE > 0 /* TODO: add a new EEPROM property and use it here */

Regards,
Stefan





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