On Wednesday 16 April 2008, Russell King wrote: > On Wed, Apr 16, 2008 at 01:10:02AM +0300, Adrian Bunk wrote: > > On Tue, Apr 15, 2008 at 11:03:45PM +0100, Russell King wrote: > > > On Wed, Apr 16, 2008 at 12:52:23AM +0300, Adrian Bunk wrote: > > >... > > > So this is a only impacting ARM wrt. PCMCIA, and given that ARM supplies > > > an asm/ide.h, it's _entirely_ reasonable that if a platform has PCMCIA > > > then it supports IDE. > > > > > > > We could simply always select HAVE_IDE on arm instead of manually > > > > setting which platforms could possibly get IDE support (e.g. are there > > > > any boards with PCI slots for which HAVE_IDE is currently not > > > > selected?). > > > > > > You could, if there was a demand for it. As no one has added that, > > > I conclude that its less common for people to stick an IDE controller > > > into a PCI backplane. > > > > People can always enable code for stuff they don't use. > > > > But instead of having 14 ARM platforms plus PCMCIA (which is offered > > unconditionally on all ARM platforms...) select HAVE_IDE it's simpler > > to select it once for all ARM platforms. Please send me a patch doing this, it should be safe for current IDE tree. > That would seem logical, but Bart objects to that idea. I don't remember the background but I think it was needed because of badly perplexed ide_init_hwif_ports() and friends in <asm/ide.h> vs <linux/ide.h> (almost all this stuff is gone in IDE tree for 2.6.26)... Ok, I found the patch: http://git.kernel.org/?p=linux/kernel/git/tglx/history.git;a=commitdiff;h=4b3b8ee5db374b76608537e061f2efd90e21179d [ tglx's history tree since it is from May 2004. ] > However, consider that we're gradually transitioning over to being > exclusively libata only. > > > > In fact, there are only three classes of ARM platforms which have PCI > > > selected but not HAVE_IDE - IOP13xx, IXP2000, and Orion. I suspect > > > the only reason they don't select it because they now use the ATA code > > > rather than the old IDE code - that's certainly true of Orion. > > > > The libata options are offered unconditionally on all platforms... > > It wasn't *my* choice to restrict IDE on ARM. See Bart for that > decision. It could be that I did the poor job of explaining things back then but I also didn't like the fact that I needed to restrict the IDE choice on ARM - the change in question was _necessary_ to start converting IDE drivers to become real, independent, modular host drivers and as a preparation for adding proper warm-plug support. Thanks, Bart -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
