From patchwork Tue Nov 16 00:02:53 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [2/3] rtc: rtc-s3c: Add spin_lock_irq in s3c_rtc_setaie From: Kukjin Kim X-Patchwork-Id: 71318 Message-Id: <1289865774-31073-3-git-send-email-kgene.kim@samsung.com> To: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, rtc-linux@googlegroups.com Cc: ben-linux@fluff.org, p_gortmaker@yahoo.com, a.zummo@towertech.it, Kukjin Kim , Wan ZongShun Date: Tue, 16 Nov 2010 09:02:53 +0900 This patch adds spin_lock_irq() and spin_unlock_irq() during alarm interrupt configuration to avoid interrupt missing. Cc: Ben Dooks Cc: Wan ZongShun Cc: Alessandro Zummo Signed-off-by: Kukjin Kim --- drivers/rtc/rtc-s3c.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index e2636ff..bb88027 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -82,12 +82,14 @@ static int s3c_rtc_setaie(struct device *dev, unsigned int enabled) pr_debug("%s: aie=%d\n", __func__, enabled); + spin_lock_irq(&s3c_rtc_pie_lock); tmp = readb(s3c_rtc_base + S3C2410_RTCALM) & ~S3C2410_RTCALM_ALMEN; if (enabled) tmp |= S3C2410_RTCALM_ALMEN; writeb(tmp, s3c_rtc_base + S3C2410_RTCALM); + spin_unlock_irq(&s3c_rtc_pie_lock); return 0; }