On Wed, Mar 08, 2006 at 10:35:38PM -0800, Jurij Smakov wrote: > On Thu, 9 Mar 2006, Sven Luther wrote: > >As quoted from http://wiki.debian.org/LinuxKernelIdeProblem, it is no clear > >that ide-generic and via82cxxx to take only one example do exactly the same > >thing, and there is no way both could be needed at the same time, and in > >fact > >it is contrary, what do i say, anathema, to both the linux ide layer and > >the > >yaird design document, to even imagine that. > I've independently done the analysis of the IDE layer initialization and > can confirm the technical part of Sven's conclusion: ide-generic takes > over all hardware interfaces (hwifs), which do not have the 'present' flag > set in their corresponding entry in the ide_hwifs[] structure. Normally, > the native IDE drivers set this flag during their initialization (via82cxxx > does it through the chain of calls ide_setup_pci_device() -> > probe_hwif_init_with_fixup() -> hwif_init()). So, if ide-generic is loaded > last, it will pick up only the interfaces, which have not been claimed by > any native drivers, which is the desired result. Looking at the code I > cannot see how the native drivers can depend in any way on the ide-generic > being loaded before them. What version of the kernel was this analysis done with? The workaround in yaird is explicitly commented as existing for the benefit of older kernel versions; can you assure us that this aspect of the driver design is unchanged from 2.6.8 through 2.6.15? -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. vorlon@debian.org http://www.debian.org/
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