rtc-ds1553: drop IRQF_SHARED

IRQF_SHARED should not be used with IRQF_DISABLED.  There is no in-tree
user of this driver and only out-of-tree user I know uses a dedicated irq
line for this RTC.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-ds1553.c

@@ -329,8 +329,7 @@ static int __devinit ds1553_rtc_probe(struct platform_device *pdev)
 	if (pdata->irq > 0) {
 		writeb(0, ioaddr + RTC_INTERRUPTS);
 		if (request_irq(pdata->irq, ds1553_rtc_interrupt,
-				IRQF_DISABLED | IRQF_SHARED,
-				pdev->name, pdev) < 0) {
+				IRQF_DISABLED, pdev->name, pdev) < 0) {
 			dev_warn(&pdev->dev, "interrupt not available.\n");
 			pdata->irq = 0;
 		}