From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Boyd Subject: [PATCH] Input: pmic8xxx-pwrkey - Set sane default for debounce time Date: Mon, 31 Mar 2014 11:14:24 -0700 Message-ID: <1396289664-31893-1-git-send-email-sboyd@codeaurora.org> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Dmitry Torokhov Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-input@vger.kernel.org, Arnd Bergmann List-Id: linux-input@vger.kernel.org If the debounce time is 0 our usage of ilog2() later on in this driver will cause undefined behavior. If CONFIG_OF=n this fact is evident to the compiler, and it emits a call to ____ilog2_NaN() which doesn't exist. Fix this by setting a sane default for debounce. Reported-by: Arnd Bergmann Signed-off-by: Stephen Boyd --- drivers/input/misc/pmic8xxx-pwrkey.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/input/misc/pmic8xxx-pwrkey.c b/drivers/input/misc/pmic8xxx-pwrkey.c index 1cb8fda7a166..27add04676e1 100644 --- a/drivers/input/misc/pmic8xxx-pwrkey.c +++ b/drivers/input/misc/pmic8xxx-pwrkey.c @@ -92,7 +92,7 @@ static int pmic8xxx_pwrkey_probe(struct platform_device *pdev) bool pull_up; if (of_property_read_u32(pdev->dev.of_node, "debounce", &kpd_delay)) - kpd_delay = 0; + kpd_delay = 15625; pull_up = of_property_read_bool(pdev->dev.of_node, "pull-up"); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation