From: Kevin Hilman <khilman@ti.com> To: Andrew Morton <akpm@linux-foundation.org>, rtc-linux@googlegroups.com, Alessandro Zummo <a.zummo@towertech.it> Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] drivers/rtc/rtc-twl.c: fix threaded IRQ to use IRQF_ONESHOT Date: Fri, 6 Jul 2012 09:33:54 -0700 [thread overview] Message-ID: <1341592434-4207-1-git-send-email-khilman@ti.com> (raw) Requesting a threaded interrupt without a primary handler and without IRQF_ONESHOT is dangerous, and after commit 1c6c6952 (genirq: Reject bogus threaded irq requests), these requests are rejected. This causes ->probe() to fail, and the RTC driver not to be availble. To fix, add IRQF_ONESHOT to the IRQ flags. Tested on OMAP3730/OveroSTORM and OMAP4430/Panda board using rtcwake to wake from system suspend multiple times. Signed-off-by: Kevin Hilman <khilman@ti.com> --- Resending to broader audience and including Andrew. Since, I understand that drivers/rtc is somewhat orphaned, Andrew, can you queue this fix for v3.5. Thanks. drivers/rtc/rtc-twl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c index 258abea..c5d06fe 100644 --- a/drivers/rtc/rtc-twl.c +++ b/drivers/rtc/rtc-twl.c @@ -510,7 +510,7 @@ static int __devinit twl_rtc_probe(struct platform_device *pdev) } ret = request_threaded_irq(irq, NULL, twl_rtc_interrupt, - IRQF_TRIGGER_RISING, + IRQF_TRIGGER_RISING | IRQF_ONESHOT, dev_name(&rtc->dev), rtc); if (ret < 0) { dev_err(&pdev->dev, "IRQ is not free.\n"); -- 1.7.9.2
WARNING: multiple messages have this Message-ID (diff)
From: khilman@ti.com (Kevin Hilman) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH] drivers/rtc/rtc-twl.c: fix threaded IRQ to use IRQF_ONESHOT Date: Fri, 6 Jul 2012 09:33:54 -0700 [thread overview] Message-ID: <1341592434-4207-1-git-send-email-khilman@ti.com> (raw) Requesting a threaded interrupt without a primary handler and without IRQF_ONESHOT is dangerous, and after commit 1c6c6952 (genirq: Reject bogus threaded irq requests), these requests are rejected. This causes ->probe() to fail, and the RTC driver not to be availble. To fix, add IRQF_ONESHOT to the IRQ flags. Tested on OMAP3730/OveroSTORM and OMAP4430/Panda board using rtcwake to wake from system suspend multiple times. Signed-off-by: Kevin Hilman <khilman@ti.com> --- Resending to broader audience and including Andrew. Since, I understand that drivers/rtc is somewhat orphaned, Andrew, can you queue this fix for v3.5. Thanks. drivers/rtc/rtc-twl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c index 258abea..c5d06fe 100644 --- a/drivers/rtc/rtc-twl.c +++ b/drivers/rtc/rtc-twl.c @@ -510,7 +510,7 @@ static int __devinit twl_rtc_probe(struct platform_device *pdev) } ret = request_threaded_irq(irq, NULL, twl_rtc_interrupt, - IRQF_TRIGGER_RISING, + IRQF_TRIGGER_RISING | IRQF_ONESHOT, dev_name(&rtc->dev), rtc); if (ret < 0) { dev_err(&pdev->dev, "IRQ is not free.\n"); -- 1.7.9.2
next reply other threads:[~2012-07-06 16:34 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-07-06 16:33 Kevin Hilman [this message] 2012-07-06 16:33 ` [PATCH] drivers/rtc/rtc-twl.c: fix threaded IRQ to use IRQF_ONESHOT Kevin Hilman 2012-07-09 22:15 ` Andrew Morton 2012-07-09 22:15 ` Andrew Morton 2012-07-10 7:32 ` Lars-Peter Clausen 2012-07-10 7:32 ` Lars-Peter Clausen 2012-07-10 11:54 ` Mark Brown 2012-07-10 11:54 ` Mark Brown -- strict thread matches above, loose matches on Subject: below -- 2012-06-28 16:17 Kevin Hilman 2012-06-28 16:17 ` Kevin Hilman 2012-07-06 14:25 ` Hilman, Kevin 2012-07-06 14:25 ` Hilman, Kevin
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