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path: root/drivers/rtc
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Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-mc13783.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/drivers/rtc/rtc-mc13783.c b/drivers/rtc/rtc-mc13783.c
index 0a978a0e40fc..6a36201178a8 100644
--- a/drivers/rtc/rtc-mc13783.c
+++ b/drivers/rtc/rtc-mc13783.c
@@ -169,6 +169,7 @@ static int __devinit mc13783_rtc_probe(struct platform_device *pdev)
{
int ret;
struct mc13783_rtc *priv;
+ int rtcrst_pending;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
@@ -177,8 +178,6 @@ static int __devinit mc13783_rtc_probe(struct platform_device *pdev)
priv->mc13783 = dev_get_drvdata(pdev->dev.parent);
platform_set_drvdata(pdev, priv);
- priv->valid = 1;
-
mc13783_lock(priv->mc13783);
ret = mc13783_irq_request(priv->mc13783, MC13783_IRQ_RTCRST,
@@ -186,33 +185,37 @@ static int __devinit mc13783_rtc_probe(struct platform_device *pdev)
if (ret)
goto err_reset_irq_request;
+ ret = mc13783_irq_status(priv->mc13783, MC13783_IRQ_RTCRST,
+ NULL, &rtcrst_pending);
+ if (ret)
+ goto err_reset_irq_status;
+
+ priv->valid = !rtcrst_pending;
+
ret = mc13783_irq_request_nounmask(priv->mc13783, MC13783_IRQ_1HZ,
mc13783_rtc_update_handler, DRIVER_NAME, priv);
if (ret)
goto err_update_irq_request;
- mc13783_unlock(priv->mc13783);
-
priv->rtc = rtc_device_register(pdev->name,
&pdev->dev, &mc13783_rtc_ops, THIS_MODULE);
-
if (IS_ERR(priv->rtc)) {
ret = PTR_ERR(priv->rtc);
- mc13783_lock(priv->mc13783);
-
mc13783_irq_free(priv->mc13783, MC13783_IRQ_1HZ, priv);
err_update_irq_request:
+err_reset_irq_status:
+
mc13783_irq_free(priv->mc13783, MC13783_IRQ_RTCRST, priv);
err_reset_irq_request:
- mc13783_unlock(priv->mc13783);
-
platform_set_drvdata(pdev, NULL);
kfree(priv);
}
+ mc13783_unlock(priv->mc13783);
+
return ret;
}
@@ -220,10 +223,10 @@ static int __devexit mc13783_rtc_remove(struct platform_device *pdev)
{
struct mc13783_rtc *priv = platform_get_drvdata(pdev);
- rtc_device_unregister(priv->rtc);
-
mc13783_lock(priv->mc13783);
+ rtc_device_unregister(priv->rtc);
+
mc13783_irq_free(priv->mc13783, MC13783_IRQ_1HZ, priv);
mc13783_irq_free(priv->mc13783, MC13783_IRQ_RTCRST, priv);