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author | Geert Uytterhoeven <geert+renesas@glider.be> | 2015-02-05 16:49:09 +0100 |
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committer | Linus Walleij <linus.walleij@linaro.org> | 2015-03-04 13:50:46 +0100 |
commit | b80eef95beb04760629822fa130aeed54cdfafca (patch) | |
tree | 5f85930eeef54094193cebd575640b42aeb2d621 /drivers/input | |
parent | a39294bdf4b03803156c771968a6e2ba6ebb505b (diff) | |
download | linux-b80eef95beb04760629822fa130aeed54cdfafca.tar.gz linux-b80eef95beb04760629822fa130aeed54cdfafca.tar.bz2 linux-b80eef95beb04760629822fa130aeed54cdfafca.zip |
gpio: pcf857x: Propagate wake-up setting to parent irq controller
The pcf857x GPIO and interrupt controller uses dummy_irq_chip, which
does not implement irq_chip.irq_set_wake() and does not set
IRQCHIP_SKIP_SET_WAKE.
This causes two s2ram issues if wake-up is enabled for the pcf857x GPIO
pins:
1. During resume from s2ram, the following warning is printed:
WARNING: CPU: 0 PID: 1046 at kernel/irq/manage.c:537 irq_set_irq_wake+0x9c/0xf8()
Unbalanced IRQ 113 wake disable
2. Wake-up through the pcf857x GPIO pins may fail, as the parent
interrupt controller may be suspended.
Migrate the pcf857x GPIO and interrupt controller from dummy_irq_chip to
its own irq_chip. This irq chip implements irq_chip.irq_set_wake() to
propagate its wake-up setting to the parent interrupt controller.
This fixes wake-up through gpio-keys on sh73a0/kzm9g, where the pcf857x
interrupt is cascaded to irq-renesas-intc-irqpin, and the latter must
not be suspended when wake-up is enabled.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/input')
0 files changed, 0 insertions, 0 deletions