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    SubjectRe: 2.6.24.X: SATA/AHCI related boot delay. - not with 2.6.24.3
    Volker Armin Hemmann wrote:
    > it was for a little bit more than 24h. I booted and rebooted several times to
    > make sure - and everything was fine, but after a good night and on the Xth
    > boot, the hang occured again - and since then it is there. Reliable on every
    > boot :(
    > (and the softreset failed message on reboots).
    > Of course, I booted and rebooted several times. And it stays.
    >
    > Maybe it is the hardware. But I replaced the cables already and smart says the
    > disk is ok.

    Does the attached patch make any difference?

    >>> Setting AHCI in bios still results in timeouts and harddisks not found.
    >> Does pci=nomsi help?
    >
    > oh yes!
    > It does. I changed the 'Sata operation mode' setting from 'non raid' to AHCI,
    > booted with that option:
    >
    > the most obvious change are the different interrupts: 23 instead of 315
    > (non-raid, without nosmi) or 218 (systemrescuecd 1.0, ahci setting, without
    > nosmi)

    Yeah, that sounds about right. Hmm... Can you post the result of "lspci
    -nn"?

    --
    tejun
    diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
    index 6978469..5065404 100644
    --- a/drivers/ata/ahci.c
    +++ b/drivers/ata/ahci.c
    @@ -402,6 +402,7 @@ static const struct ata_port_operations ahci_p5wdh_ops = {
    static const struct ata_port_info ahci_port_info[] = {
    /* board_ahci */
    {
    + AHCI_HFLAGS (AHCI_HFLAG_NO_PMP),
    .flags = AHCI_FLAG_COMMON,
    .link_flags = AHCI_LFLAG_COMMON,
    .pio_mask = 0x1f, /* pio0-4 */
    @@ -1863,7 +1864,7 @@ static void ahci_error_handler(struct ata_port *ap)

    /* perform recovery */
    sata_pmp_do_eh(ap, ata_std_prereset, ahci_softreset,
    - ahci_hardreset, ahci_postreset,
    + NULL/*ahci_hardreset*/, ahci_postreset,
    sata_pmp_std_prereset, ahci_pmp_softreset,
    sata_pmp_std_hardreset, sata_pmp_std_postreset);
    }
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