linux-kernel - Re: Regression: commit "ide: constify struct ide_port

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Message-ID: <472217F7.6060501@ru.mvista.com>
Date:	Fri, 26 Oct 2007 20:38:15 +0400
From:	Sergei Shtylyov <sshtylyov@...mvista.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Russell King <rmk@....linux.org.uk>, linux-ide@...r.kernel.org,
	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	Jeff Garzik <jgarzik@...ox.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Linux Kernel List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: Regression: commit "ide: constify struct ide_port_info" causes
 breakage

Hello.

Linus Torvalds wrote:

>>   We can just convert cariables declared as 'struct hpt_info' to const too -- 
>>they are read-only templates.

> Generally "__devinitdata" is better than "const", since it means that the 
> data may be thrown away.

    Agreed.

> So if you drop one over the other,

    No, just add 'const' to already __devinitdata data to make gcc happy again.

> it's generally the "const" that should be dropped ;/

    Well, this may break when/if we need to add __devinitdata that is actually 
r/w -- not likely with this driver but still...

> 		Linus

WBR, Sergei
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