[PATCH v2 05/20] rtc: omap: fix class-device registration

Johan Hovold
2014-10-21T17:37:51Z

Make sure not to register the class device until after the device has
been configured.

Currently, the device is not fully configured (e.g. 24-hour mode) when
the class device is registered, something which involves driver
callbacks for example to read the current time.

Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/rtc/rtc-omap.c | 46 +++++++++++++++++++++++-----------------------
1 file changed, 23 insertions(+), 23 deletions(-)

diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 6b10db5a5702..813bed270867 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -413,16 +413,6 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
rtc_writel(KICK1_VALUE, OMAP_RTC_KICK1_REG);
}

- device_init_wakeup(&pdev->dev, true);
-
- rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
- &omap_rtc_ops, THIS_MODULE);
- if (IS_ERR(rtc)) {
- ret = PTR_ERR(rtc);
- goto err;
- }
- platform_set_drvdata(pdev, rtc);
-
/*
* disable interrupts
*
@@ -446,19 +436,6 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
if (reg & (u8) OMAP_RTC_STATUS_ALARM)
rtc_write(OMAP_RTC_STATUS_ALARM, OMAP_RTC_STATUS_REG);

- /* handle periodic and alarm irqs */
- ret = devm_request_irq(&pdev->dev, omap_rtc_timer, rtc_irq, 0,
- dev_name(&rtc->dev), rtc);
- if (ret)
- goto err;
-
- if (omap_rtc_timer != omap_rtc_alarm) {
- ret = devm_request_irq(&pdev->dev, omap_rtc_alarm, rtc_irq, 0,
- dev_name(&rtc->dev), rtc);
- if (ret)
- goto err;
- }
-
/* On boards with split power, RTC_ON_NOFF won't reset the RTC */
reg = rtc_read(OMAP_RTC_CTRL_REG);
if (reg & (u8) OMAP_RTC_CTRL_STOP)
@@ -488,6 +465,29 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
if (reg != new_ctrl)
rtc_write(new_ctrl, OMAP_RTC_CTRL_REG);

+ device_init_wakeup(&pdev->dev, true);
+
+ rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
+ &omap_rtc_ops, THIS_MODULE);
+ if (IS_ERR(rtc)) {
+ ret = PTR_ERR(rtc);
+ goto err;
+ }
+ platform_set_drvdata(pdev, rtc);
+
+ /* handle periodic and alarm irqs */
+ ret = devm_request_irq(&pdev->dev, omap_rtc_timer, rtc_irq, 0,
+ dev_name(&rtc->dev), rtc);
+ if (ret)
+ goto err;
+
+ if (omap_rtc_timer != omap_rtc_alarm) {
+ ret = devm_request_irq(&pdev->dev, omap_rtc_alarm, rtc_irq, 0,
+ dev_name(&rtc->dev), rtc);
+ if (ret)
+ goto err;
+ }
+
return 0;

err:
--
2.0.4