linux-kernel - Re: [PATCH 05/13] sdhci: Add support for card-detection polling

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Date:	Tue, 17 Mar 2009 00:05:42 +0300
From:	Anton Vorontsov <avorontsov@...mvista.com>
To:	Pierre Ossman <drzeus@...eus.cx>
Cc:	Ben Dooks <ben-linux@...ff.org>, Arnd Bergmann <arnd@...db.de>,
	Kumar Gala <galak@...nel.crashing.org>,
	Liu Dave <DaveLiu@...escale.com>, sdhci-devel@...t.drzeus.cx,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: [PATCH 05/13] sdhci: Add support for card-detection polling

On Sun, Mar 08, 2009 at 03:11:21PM +0100, Pierre Ossman wrote:
> On Wed, 4 Mar 2009 20:49:17 +0300
> Anton Vorontsov <avorontsov@...mvista.com> wrote:
> 
> > On Sat, Feb 21, 2009 at 04:58:21PM +0100, Pierre Ossman wrote:
> > > Just modify the if-clause and
> > > things will work.
> > 
> > That would look horrid...
> > 
> >         if ((!(host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) &&
> >                         !(sdhci_readl(host, SDHCI_PRESENT_STATE) &
> >                                 SDHCI_CARD_PRESENT)) ||
> >                         (host->flags & SDHCI_DEVICE_DEAD)) {
> > 
> 
> There are worse ones in that code, but I see your point. :)
> 
> > > Might want to add a comment also to make it more obvious what the
> > > if-clause does.
> > 
> > Let's try to avoid the if-clause above? How about this:
> > 
> 
> Looks ok.
> 
> > @@ -1096,6 +1099,7 @@ out:
> >  static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
> >  {
> >  	struct sdhci_host *host;
> > +	bool present;
> >  	unsigned long flags;
> >  
> >  	host = mmc_priv(mmc);
> 
> Can we use bool in the kernel?

Sure, it's widely used in the kernel, even in such places as
mm/ or kernel/.


Thanks for the review!

-- 
Anton Vorontsov
email: cbouatmailru@...il.com
irc://irc.freenode.net/bd2
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