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Open Source and information security mailing list archives
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Date: Sat, 27 Dec 2014 19:29:23 +0100 From: Heiko Stübner <heiko@...ech.de> To: Doug Anderson <dianders@...omium.org> Cc: Linus Walleij <linus.walleij@...aro.org>, Alexandru Stan <amstan@...omium.org>, linux-rockchip@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] pinctrl: rockchip: Avoid losing interrupts when supporting both edges Am Montag, 22. Dezember 2014, 10:47:29 schrieb Doug Anderson: > I was seeing cases where I was losing interrupts when inserting and > removing SD cards. Sometimes the card would get "stuck" in the > inserted state. > > I believe that the problem was related to the code to handle the case > where we needed both rising and falling edges. This code would > disable the interrupt as the polarity was switched. If an interrupt > came at the wrong time it could be lost. > > We'll match what the gpio-dwapb.c driver does upstream and change the > interrupt polarity without disabling things. > > Signed-off-by: Doug Anderson <dianders@...omium.org> Reviewed-by: Heiko Stuebner <heiko@...ech.de> on a rk3188 board with the edge triggered power-button Tested-by: Heiko Stuebner <heiko@...ech.de> Heiko -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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