drivers/rtc/rtc-bfin.c: do not abort when requesting irq fails

The RTC framework does not let you return an error once a call to
devm_rtc_device_register has succeeded.  Avoid doing that when the IRQ
request fails as we can still support reading/writing the clock without
the IRQ.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Reported-by: Ales Novak <alnovak@suse.cz>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/rtc/rtc-bfin.c b/drivers/rtc/rtc-bfin.c
index 0c53f45..fe4bdb0 100644 (file)
--- a/drivers/rtc/rtc-bfin.c
+++ b/drivers/rtc/rtc-bfin.c
@@ -346,7 +346,7 @@ static int bfin_rtc_probe(struct platform_device *pdev)
 {
        struct bfin_rtc *rtc;
        struct device *dev = &pdev->dev;
-       int ret = 0;
+       int ret;
        unsigned long timeout = jiffies + HZ;
 
        dev_dbg_stamp(dev);
@@ -361,16 +361,17 @@ static int bfin_rtc_probe(struct platform_device *pdev)
        /* Register our RTC with the RTC framework */
        rtc->rtc_dev = devm_rtc_device_register(dev, pdev->name, &bfin_rtc_ops,
                                                THIS_MODULE);
-       if (unlikely(IS_ERR(rtc->rtc_dev))) {
-               ret = PTR_ERR(rtc->rtc_dev);
-               goto err;
-       }
+       if (unlikely(IS_ERR(rtc->rtc_dev)))
+               return PTR_ERR(rtc->rtc_dev);
 
        /* Grab the IRQ and init the hardware */
        ret = devm_request_irq(dev, IRQ_RTC, bfin_rtc_interrupt, 0,
                                pdev->name, dev);
        if (unlikely(ret))
-               goto err;
+               dev_err(&pdev->dev,
+                       "unable to request IRQ; alarm won't work, "
+                       "and writes will be delayed\n");
+
        /* sometimes the bootloader touched things, but the write complete was not
         * enabled, so let's just do a quick timeout here since the IRQ will not fire ...
         */
@@ -381,9 +382,6 @@ static int bfin_rtc_probe(struct platform_device *pdev)
        bfin_write_RTC_SWCNT(0);
 
        return 0;
-
-err:
-       return ret;
 }
 
 static int bfin_rtc_remove(struct platform_device *pdev)