diff options
| author | Guo Zeng <guo.zeng@csr.com> | 2014-12-10 15:52:24 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-10 17:41:13 -0800 |
| commit | 0e95325525c4383565cea4f402f15a3113162d05 (patch) | |
| tree | c1d6c26da1f234ce1c21738b11a1b6d8fb166970 /drivers/rtc/rtc-sirfsoc.c | |
| parent | a682e9c28cac152e6e54c39efcf046e0c8cfcf63 (diff) | |
| download | lwn-0e95325525c4383565cea4f402f15a3113162d05.tar.gz lwn-0e95325525c4383565cea4f402f15a3113162d05.zip | |
drivers/rtc/rtc-sirfsoc.c: move hardware initilization earlier in probe
Move rtc register to be later than hardware initialization. The reason
is that devm_rtc_device_register() will do read_time() which is a
callback accessing hardware. This sometimes causes a hang in the
hardware related callback.
Signed-off-by: Guo Zeng <guo.zeng@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rtc/rtc-sirfsoc.c')
| -rw-r--r-- | drivers/rtc/rtc-sirfsoc.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/rtc/rtc-sirfsoc.c b/drivers/rtc/rtc-sirfsoc.c index 76e38007ba90..24ba97d3286e 100644 --- a/drivers/rtc/rtc-sirfsoc.c +++ b/drivers/rtc/rtc-sirfsoc.c @@ -286,14 +286,6 @@ static int sirfsoc_rtc_probe(struct platform_device *pdev) rtc_div = ((32768 / RTC_HZ) / 2) - 1; sirfsoc_rtc_iobrg_writel(rtc_div, rtcdrv->rtc_base + RTC_DIV); - rtcdrv->rtc = devm_rtc_device_register(&pdev->dev, pdev->name, - &sirfsoc_rtc_ops, THIS_MODULE); - if (IS_ERR(rtcdrv->rtc)) { - err = PTR_ERR(rtcdrv->rtc); - dev_err(&pdev->dev, "can't register RTC device\n"); - return err; - } - /* 0x3 -> RTC_CLK */ sirfsoc_rtc_iobrg_writel(SIRFSOC_RTC_CLK, rtcdrv->rtc_base + RTC_CLOCK_SWITCH); @@ -308,6 +300,14 @@ static int sirfsoc_rtc_probe(struct platform_device *pdev) rtcdrv->overflow_rtc = sirfsoc_rtc_iobrg_readl(rtcdrv->rtc_base + RTC_SW_VALUE); + rtcdrv->rtc = devm_rtc_device_register(&pdev->dev, pdev->name, + &sirfsoc_rtc_ops, THIS_MODULE); + if (IS_ERR(rtcdrv->rtc)) { + err = PTR_ERR(rtcdrv->rtc); + dev_err(&pdev->dev, "can't register RTC device\n"); + return err; + } + rtcdrv->irq = platform_get_irq(pdev, 0); err = devm_request_irq( &pdev->dev, |