Applied.
thanks,
-len
On Wednesday 23 May 2007 17:12, akpm@xxxxxxxxxxxxxxxxxxxx wrote:
> From: Tear <tarrqt@xxxxxxxxx>
>
> I have a Dell Optiplex GX240 and when I boot Linux, ACPI gets set up by only
> acpi=ht. dmesg shows the following line:
>
> DELL GX240 detected: force use of acpi=ht
>
> Everything seemed to be fine. However, I discovered that everything is not
> fine. The USB controller works so slowly that copying a few (uncached) 1
> megabyte large photos from a USB-enabled digital camera takes many minutes
> instead of a couple of seconds.
>
> I am using Linux 2.6.21.1 on a Debian 4.0 ("Etch") system.
>
> I thought that this might be related to ACPI. So I tried to boot with _only_
> "acpi=force" appended to the kernel command line. Voila, the USB controller
> started to work at full speed and copying photos from my digital camera took
> only seconds.
>
> I tested the system with "acpi=force" and could not find anything which did
> not work. So, can we please remove Dell Optiplex GX240 from the blacklist in
>
> ..../arch/i386/kernel/acpi/boot.c
>
> ? The attached patch does just that: It removes Dell Optiplex GX240 from the
> ACPI blacklist.
>
> I thought that this might be related to interrupts and APIC as well. (Note
> that this is APIC, not ACPI.) I tried booting with _only_ "noapic" and
> "nolapic" appended to the command line. Again, the USB controller started to
> work at full speed.
>
> Cc: Len Brown <lenb@xxxxxxxxxx>
> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> ---
>
> arch/i386/kernel/acpi/boot.c | 8 --------
> 1 files changed, 8 deletions(-)
>
> diff -puN arch/i386/kernel/acpi/boot.c~remove-dell-optiplex-gx240-from-the-acpi-blacklist arch/i386/kernel/acpi/boot.c
> --- a/arch/i386/kernel/acpi/boot.c~remove-dell-optiplex-gx240-from-the-acpi-blacklist
> +++ a/arch/i386/kernel/acpi/boot.c
> @@ -971,14 +971,6 @@ static struct dmi_system_id __initdata a
> },
> {
> .callback = force_acpi_ht,
> - .ident = "DELL GX240",
> - .matches = {
> - DMI_MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"),
> - DMI_MATCH(DMI_BOARD_NAME, "OptiPlex GX240"),
> - },
> - },
> - {
> - .callback = force_acpi_ht,
> .ident = "HP VISUALIZE NT Workstation",
> .matches = {
> DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
> _
> -
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