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    SubjectRe: 2.6.25-rc1 ahci regression
    On Thu, Jun 03, 2010 at 07:55:05PM +0400, Anton Vorontsov wrote:
    >On Thu, Jun 03, 2010 at 11:45:33PM +0800, Américo Wang wrote:
    >> On Thu, Jun 03, 2010 at 07:04:22PM +0400, Anton Vorontsov wrote:
    >> >On Thu, Jun 03, 2010 at 10:13:57PM +0800, Luming Yu wrote:
    >> >> On Thu, Jun 3, 2010 at 9:50 PM, Anton Vorontsov <cbouatmailru@gmail.com> wrote:
    >> >> > On Thu, Jun 03, 2010 at 05:23:19PM +0400, Anton Vorontsov wrote:
    >> >> > [...]
    >> >> >> Oh. It seems I found it. It must be the module order loading
    >> >> >> thing.
    >> >> >>
    >> >> >> Can you try the patch down below?
    >> >> >
    >> >> > OTOH... libahci is a link-time dependency. And the order doesn't
    >> >> > matter here. So you should just have the libahci module in
    >> >> > the initrd (actually, mkinitrd or whatever you use should
    >> >> > have included this automatically).
    >> >> >
    >> >>
    >> >> Neither ahci nor libachi is automatically included in initrd..
    >> >
    >> >What commands you use to build the kernel and initrd?
    >> >
    >> >> Manually added ahci and libachi into initrd seems to make the problem go away..
    >> >> Any idea why that could happen?
    >> >
    >> >No idea off hand.
    >> >
    >> >Cc'ing Kbuild folks. Question is: is there something wrong with
    >> >writing stuff like this:
    >> >obj-$(CONFIG_SATA_AHCI) += ahci.o libahci.o
    >> >obj-$(CONFIG_SATA_AHCI_PLATFORM) += ahci_platform.o libahci.o
    >> >as in drivers/ata/Makefile?
    >> >
    >> >It seem to link fine, .ko's are created. But for some reason
    >> >initrd doesn't include these modules for Luming...
    >> >
    >>
    >> Odd.
    >> Are these modules exported to /lib/modules/`uname -r`/ directory?
    >
    >At least for me, yes (debian sid). It all looks sane.
    >


    Then it's unlikely to be a problem of kbuild. :)


    >
    >I just found Fedora's mkinitrd, and I see this:
    >
    >~/mkinitrd$ git grep -A 5 -B 5 ahci
    >functions- for m in $items ; do
    >functions- char=$(echo $m | cut -c1)
    >functions- if [ $char = '=' ]; then
    >functions- NAME=$(echo $m | cut -c2-)
    >functions- if [ "$NAME" = "ata" ]; then
    >functions: MODS="$MODS $(cat /lib/modules/$kernel/modules.block |egrep '(ata|ahci)' |sed -e 's/.ko//')"
    >functions- else
    >functions- # Ignore if group list does not exist
    >functions- if [ -e /lib/modules/$kernel/modules.$NAME ]; then
    >functions- MODS="$MODS $(cat /lib/modules/$kernel/modules.$NAME |sed -e 's/.ko//')"
    >functions- fi
    >
    >Hm? What is this? Maybe it breaks when it sees libahci?
    >

    Not sure, Luming is using dracut, I guess if this would be a bug
    of dracut, let me check the source code first...

    Thanks.
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