From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartlomiej Zolnierkiewicz Subject: Re: [PATCH 1/3] ide: Add ide_get_paired_drive() helper Date: Thu, 18 Oct 2007 23:10:13 +0200 Message-ID: <200710182310.13272.bzolnier@gmail.com> References: <20071018005621.8F637DDEB8@ozlabs.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from nf-out-0910.google.com ([64.233.182.188]:5764 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753703AbXJRWuZ (ORCPT ); Thu, 18 Oct 2007 18:50:25 -0400 Received: by nf-out-0910.google.com with SMTP id g13so285712nfb for ; Thu, 18 Oct 2007 15:50:23 -0700 (PDT) In-Reply-To: <20071018005621.8F637DDEB8@ozlabs.org> Content-Disposition: inline Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Benjamin Herrenschmidt Cc: Linux IDE , linux-kernel@vger.kernel.org, Andrew Morton , stable@kernel.org On Thursday 18 October 2007, Benjamin Herrenschmidt wrote: > This adds a helper to get to the "other" drive on a pair connected > to a given hwif. > > Signed-off-by: Benjamin Herrenschmidt applied -stable team: please include this patch series in 2.6.23.2 > --- > > Note: You may want to use the 1 - select.b.unit construct instead, > as you prefer, I just used what was there and fixed it. > > include/linux/ide.h | 7 +++++++ > 1 file changed, 7 insertions(+) > > Index: linux-work/include/linux/ide.h > =================================================================== > --- linux-work.orig/include/linux/ide.h 2007-10-18 10:41:42.000000000 +1000 > +++ linux-work/include/linux/ide.h 2007-10-18 10:42:40.000000000 +1000 > @@ -1454,4 +1454,11 @@ static inline int hwif_to_node(ide_hwif_ > return dev ? pcibus_to_node(dev->bus) : -1; > } > > +static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive) > +{ > + ide_hwif_t *hwif = HWIF(drive); > + > + return &hwif->drives[(drive->dn ^ 1) & 1]; > +} > + > #endif /* _IDE_H */