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Revert "Revert "gpio: omap: Fix lost edge wake-up interrupts""
[ Upstream commit 7ffa081 ] This reverts commit 579ced8. Turns out I was overly optimistic about cpu_pm blocking idle being a solution for handling edge interrupts. While it helps in preventing entering idle states that potentially lose context, we can still get an edge interrupt triggering while entering idle. So we need to also add back the workaround for seeing if there are any pending edge interrupts when waking up. Signed-off-by: Tony Lindgren <tony@atomide.com> Cc: Aaro Koskinen <aaro.koskinen@iki.fi> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Keerthy <j-keerthy@ti.com> Cc: Ladislav Michl <ladis@linux-mips.org> Cc: Peter Ujfalusi <peter.ujfalusi@ti.com> Cc: Russell King <rmk+kernel@armlinux.org.uk> Cc: Tero Kristo <t-kristo@ti.com> Link: https://lore.kernel.org/r/20201028060556.56038-1-tony@atomide.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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