[oe] [PATCH v2] linux-omap_2.6.39: remove patch that prevented board from resuming from suspend.

[Koen Kooi]

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Op 01-09-11 10:48, Paul Menzel schreef:
> Dear Tasslehoff,
> 
> 
> Am Mittwoch, den 31.08.2011, 19:41 +0200 schrieb Tasslehoff Kjappfot:
>> From: Tasslehoff Kjappfot tasskjapp at gmail.com>
>> 
>> Running on a board similar to Beagleboard C3 (but without NAND) I could
>> not resume from suspend with the patch. The console output when
>> suspending was as expected, but neither console input nor a timer would
>> wake the board. Without the patch, everything works as it should.
>> 
>> Signed-off-by: Tasslehoff Kjappfot <tasskjapp at gmail.com>
> 
> Tasslehoff thank you for sending this iteration (no full stop at the end 
> of the summary please next time) and thank you Koen for pushing this 
> [1].
> 
>> ---
> 
> Next time, please add below the »---« what you changed in v2 or other 
> iterations.
> 
>> recipes/linux/linux-omap_2.6.39.bb |    1 - 1 files changed, 0
>> insertions(+), 1 deletions(-)
>> 
>> diff --git a/recipes/linux/linux-omap_2.6.39.bb
>> b/recipes/linux/linux-omap_2.6.39.bb index 8370e58..3880aa1 100644 ---
>> a/recipes/linux/linux-omap_2.6.39.bb +++
>> b/recipes/linux/linux-omap_2.6.39.bb @@ -27,7 +27,6 @@ SRC_URI_append =
>> " \ file://sakoman/0010-Revert-omap2_mcspi-Flush-posted-writes.patch \ 
>> file://sakoman/0011-Revert-omap_hsmmc-improve-interrupt-synchronisation.patch
>> \ 
>> file://sakoman/0012-Don-t-turn-SDIO-cards-off-to-save-power.-Doing-so-wi.patch
>> \ -
>> file://sakoman/0013-Enable-the-use-of-SDIO-card-interrupts.patch \ 
>> file://sakoman/0014-soc-codecs-Enable-audio-capture-by-default-for-twl40.patch
>> \ 
>> file://sakoman/0015-soc-codecs-twl4030-Turn-on-mic-bias-by-default.patch
>> \ file://sakoman/0016-RTC-add-support-for-backup-battery-recharge.patch
>> \
> 
> Koen, do you know why that patch breaks resume? I guess when applying 
> those you had tested suspend and resume and it worked for you. Maybe we 
> should contact the patch author [2]?

I stopped testing suspend/resume when dynamic ticks become good enough to
use, which was a few years ago :)

On a more serious note, s/r had never worked on omap3 when using usb
devices, only recently it started working (.37-ish) on mainline kernels with
the right defconfig. So I was suprised that Tasslehoff reported it to work
at all!

But for omap2+: take a serious look at dyntick and cpuidle, it isn't hard to
make it idle to suspend like powerlevels without actually suspending.

regards,

Koen
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