From mboxrd@z Thu Jan 1 00:00:00 1970 From: ulli.kroll@googlemail.com (Hans Ulli Kroll) Date: Wed, 1 Dec 2010 16:05:08 +0100 (CET) Subject: [PATCH] ARM: Gemini: Add support for PCI Bus In-Reply-To: <201011301719.03202.arnd@arndb.de> References: <1290263224-16965-1-git-send-email-ulli.kroll@googlemail.com> <201011291657.53316.arnd@arndb.de> <20101130160527.GB2377@n2100.arm.linux.org.uk> <201011301719.03202.arnd@arndb.de> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, 30 Nov 2010, Arnd Bergmann wrote: > On Tuesday 30 November 2010, Russell King - ARM Linux wrote: > > No, the above is correct. What I was talking about was the difference > > between these: > > > > config PCI > > bool "PCI support" if MIGHT_HAVE_PCI > > > > and > > > > config PCI > > bool "PCI support" > > depends on MIGHT_HAVE_PCI > > > > In the first instance, PCI itself does not depend on MIGHT_HAVE_PCI. > > MIGHT_HAVE_PCI controls whether the user is offered the "PCI support" > > option. > > > > In the second instance, PCI depends on MIGHT_HAVE_PCI, which must be > > set to 'y' to offer the option and also if PCI is selected. > > Right, I misread the patch as doing the wrong thing, thanks for > clearing that up. > > > We want the first behaviour. Platforms which must have PCI support can > > continue to select PCI as they currently do, and leave the MIGHT_HAVE_PCI > > option alone. > > > > Platforms which may optionally have PCI support should select > > MIGHT_HAVE_PCI instead. > > Yes, that sounds good. > > Arnd > OK. I prepare some patch. Ulli