Thread (13 messages) 13 messages, 4 authors, 2016-03-11

[PATCH 0/3] OMAP/pinmux: remove misuse of IRQF_NO_SUSPEND flag

From: grygorii.strashko@ti.com (Grygorii Strashko)
Date: 2016-03-08 11:32:42
Also in: linux-gpio, linux-omap

On 02/15/2016 10:27 PM, Tony Lindgren wrote:
* Sudeep Holla [off-list ref] [160215 02:03]:
quoted
Hi Linus,

On 13/02/16 14:42, Linus Walleij wrote:
quoted
On Mon, Feb 1, 2016 at 7:28 PM, Sudeep Holla [off-list ref] wrote:
quoted
   pinctrl: single: Use a separate lockdep class
   pinctrl: single: remove misuse of IRQF_NO_SUSPEND flag
   ARM: OMAP2+: remove misuse of IRQF_NO_SUSPEND flag

  arch/arm/mach-omap2/mux.c        |  4 ++--
  arch/arm/mach-omap2/pm34xx.c     |  9 ++++-----
  arch/arm/mach-omap2/prm_common.c |  1 +
  drivers/pinctrl/pinctrl-single.c | 15 ++++++++++++---
Are these patches orthogonal so I can merge the pinctrl patch independently
of the OMAP patches if Tony ACKs this?
Thanks for the follow up.
IIUC they are dependent and remember Tony/Grygorii wanted them to be
merged together(at-least for bisectibility)
AFAIK this series needs to be kept together to keep things
working.
quoted
quoted
If not: should it be merged by me or through ARM SoC/Tony?
I think so.
quoted
Anyways waiting for maintainer feedback, but the above is good to know.
Grygorii was still not sure if this works and he couldn't give it a
test. He was traveling and may need more time to get back on this.
He said it does not work so clearly more work is needed.
Yeah. As I mentioned before patches 2/3 will not work.
I've tried to test suspend with diff I posted [1], but I did it only on 
dra7 and am43 where suspend i more simple than on omap3. Also, I worry
that with such approach some irq can be missed (especially edge ones), 
because PRCM irqs will be re-enabled at very late resume stage 
(right before thaw).

Second option, I see, is to rework PRCM to be threaded IRQ, but in this case
all children IRQs will need to be threaded/nested threaded
(including PCS, legacy OMAP mux, OMAP3 _prcm_int_handle_wakeup/_prcm_int_handle_io).

Are there any objection to convert PCS to threaded IRQ, for example? ;)
 

[1] https://patchwork.ozlabs.org/patch/578915/

-- 
regards,
-grygorii
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