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Old 04-21-2010, 09:32 AM
Andy Whitcroft
 
Default SRU: UBUNTU: SAUCE: Fix hang on resume for Dell Studio 1558, 1557, 1555

On Tue, Apr 20, 2010 at 01:16:04PM -0700, Kamal Mostafa wrote:
> Proposed patch for Lucid SRU-
>
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/553498
> Dell Studio 1558 (Arrandale) hangs on resume from suspend
>
> SRU Justification/Impact:
>
> Dell Studio 1558 (and presumably other 155x models) hangs on resume from
> suspend.
>
> TEST CASE:
>
> I have built and tested a kernel with this patch and confirmed that it
> reliably fixes resume from suspend on my own Dell Studio 1558.
>
> =====
>
> Add the Dell Studio models (1558, 1557, 1555) to the list of machines
> needing 'set_sci_en_on_resume' handling; affects only the listed models.
>
> BugLink: http://bugs.launchpad.net/bugs/553498
>
> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
> ---
> drivers/acpi/sleep.c | 24 ++++++++++++++++++++++++
> 1 files changed, 24 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
> index 5f2c379..cf3101f 100644
> --- a/drivers/acpi/sleep.c
> +++ b/drivers/acpi/sleep.c
> @@ -453,6 +453,30 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
> DMI_MATCH(DMI_BOARD_NAME, "CF51-2L"),
> },
> },
> + {
> + .callback = init_set_sci_en_on_resume,
> + .ident = "Dell Studio 1558",
> + .matches = {
> + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> + DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1558"),
> + },
> + },
> + {
> + .callback = init_set_sci_en_on_resume,
> + .ident = "Dell Studio 1557",
> + .matches = {
> + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> + DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1557"),
> + },
> + },
> + {
> + .callback = init_set_sci_en_on_resume,
> + .ident = "Dell Studio 1555",
> + .matches = {
> + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> + DMI_MATCH(DMI_PRODUCT_NAME, "Studio 1555"),
> + },
> + },
> {},
> };
> #endif /* CONFIG_SUSPEND */

I presume this means these machines have bad bioses, sigh. Seems
reasonable assuming they have been tested.

Acked-by: Andy Whitcroft <apw@canonical.com>

-apw

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