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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>
This commit is contained in:
Mike Frysinger 2014-06-06 14:36:07 -07:00 committed by Linus Torvalds
parent cd914bba03
commit 778575ff30
1 changed files with 7 additions and 9 deletions
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16
drivers/rtc/rtc-bfin.c
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@ -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)