On Thursday 09 July 2009 22:11:30 Rafael J. Wysocki wrote: > On Thursday 09 July 2009, Alan Jenkins wrote: > > 2009/7/8 Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>: > > > On Wednesday 08 July 2009 21:41:17 Rafael J. Wysocki wrote: > > >> On Wednesday 08 July 2009, Alan Jenkins wrote: > > >> > Hi, > > >> > > > >> > I've borrowed this laptop for a few days. Linux works pretty well, > > >> > but I found a problem on newer kernels. After suspend it claims the > > >> > battery has been removed. E.g. /proc/acpi/battery/BAT0/state claims > > >> > the battery is not present (but it is). > > >> > > > >> > I've attached acpidump and dmidecode output at > > >> > <http://bugzilla.kernel.org/show_bug.cgi?id=13745>. I still have > > >> > access to the laptop for further tests, but only until Friday. > > >> > > > >> > I bisected it to the commit below. Manually reverting the patch fixes > > >> > the problem (in both 2.6.30 and 2.6.31-rc2). > > >> > > >> Well, the commit below can't be reverted, because that would cause the boxes > > >> it fixed to stop working. > > >> > > >> Now, the only case this patch can make any difference is when the BIOS doesn't > > >> set SCI_EN before returning control the the kernel, which quite evidently is a > > >> BIOS bug. The fact that the battery doesn't work with this patch applied means > > >> that the BIOS not only doesn't set SCI_EN, but also expects it to remain unset, > > >> which is insane. > > >> > > >> IMO this is a "won't fix", sorry. > > > > > > Lets be pragmatic here.. > > > > > > Besides this is a regression and we are already handling some such insane > > > systems in STR case. Moreover sending SMI ACPI_ENABLE command may result in > > > some things happening behind our back and not only setting of SCI_EN bit.. > > > > > > PS Looking at the set_sci_en_on_resume quirk history it seems that if we are > > > lucky we may may fix another issue (screaming IRQ one) at the same time :) > > > > > > Alan, could you try this patch? > > > > > > --- > > > debug patch (needs to have both CONFIG_SUSPEND=y & CONFIG_HIBERNATION=y) > > > > > > drivers/acpi/sleep.c | 13 ++++++++++++- > > > 1 file changed, 12 insertions(+), 1 deletion(-) > > > > > > Index: b/drivers/acpi/sleep.c > > > =================================================================== > > > --- a/drivers/acpi/sleep.c > > > +++ b/drivers/acpi/sleep.c > > > @@ -383,6 +383,14 @@ static struct dmi_system_id __initdata a > > > }, > > > }, > > > { > > > + .callback = init_set_sci_en_on_resume, > > > + .ident = "Hewlett-Packard HP G7000 Notebook PC", > > > + .matches = { > > > + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), > > > + DMI_MATCH(DMI_PRODUCT_NAME, "HP G7000 Notebook PC"), > > > + }, > > > + }, > > > + { > > > .callback = init_old_suspend_ordering, > > > .ident = "Panasonic CF51-2L", > > > .matches = { > > > > Thanks for coding this up for me in full. It works, the battery now > > survives, and it does indeed remove the IRQ warning. > > Great, thanks for testing, Bart, thanks for the patch! > > Len, can you add the Bart's patch to your 2.6.31 queue, please? Here is the final patch version: From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> Subject: [PATCH] acpi: HP G7000 Notebook needs a SCI_EN resume quirk This fixes regression (battery "vanishing" on resume) introduced by commit d0c71fe7ebc180f1b7bc7da1d39a07fc19eec768 ("ACPI Suspend: Enable ACPI during resume if SCI_EN is not set") and also the issue with the "screaming" IRQ 9. Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=13745 Reported-and-tested-by: Alan Jenkins <alan-jenkins@xxxxxxxxxxxxxx> Acked-by: Rafael J. Wysocki <rjw@xxxxxxx> Cc: stable@xxxxxxxxxx Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> --- drivers/acpi/sleep.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) Index: b/drivers/acpi/sleep.c =================================================================== --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -383,6 +383,14 @@ static struct dmi_system_id __initdata a }, }, { + .callback = init_set_sci_en_on_resume, + .ident = "Hewlett-Packard HP G7000 Notebook PC", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP G7000 Notebook PC"), + }, + }, + { .callback = init_old_suspend_ordering, .ident = "Panasonic CF51-2L", .matches = { -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
