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rtc: omap: clean up probe error handling

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Remove some debug messages and return errors from subsystems rather than
always fail with -EIO.

Note that the class-registration error has already been logged by rtc
core.

Signed-off-by: Johan Hovold <johan@kernel.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Benot Cousson <bcousson@baylibre.com>
Cc: Lokesh Vutla <lokeshvutla@ti.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Keerthy J <j-keerthy@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Johan Hovold 2014-12-10 15:52:40 -08:00 committed by Linus Torvalds
parent 1ed8b5d26c
commit 437b37a66a
1 changed files with 18 additions and 23 deletions
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41
drivers/rtc/rtc-omap.c
View File

@ -379,6 +379,7 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
u8 reg, new_ctrl;
const struct platform_device_id *id_entry;
const struct of_device_id *of_id;
int ret;
of_id = of_match_device(omap_rtc_of_match, &pdev->dev);
if (of_id)
@ -391,16 +392,12 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
}
omap_rtc_timer = platform_get_irq(pdev, 0);
if (omap_rtc_timer <= 0) {
pr_debug("%s: no update irq?\n", pdev->name);
if (omap_rtc_timer <= 0)
return -ENOENT;
}
omap_rtc_alarm = platform_get_irq(pdev, 1);
if (omap_rtc_alarm <= 0) {
pr_debug("%s: no alarm irq?\n", pdev->name);
if (omap_rtc_alarm <= 0)
return -ENOENT;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
rtc_base = devm_ioremap_resource(&pdev->dev, res);
@ -421,9 +418,8 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
&omap_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc)) {
pr_debug("%s: can't register RTC device, err %ld\n",
pdev->name, PTR_ERR(rtc));
goto fail0;
ret = PTR_ERR(rtc);
goto err;
}
platform_set_drvdata(pdev, rtc);
@ -451,18 +447,16 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
rtc_write(OMAP_RTC_STATUS_ALARM, OMAP_RTC_STATUS_REG);
/* handle periodic and alarm irqs */
if (devm_request_irq(&pdev->dev, omap_rtc_timer, rtc_irq, 0,
dev_name(&rtc->dev), rtc)) {
pr_debug("%s: RTC timer interrupt IRQ%d already claimed\n",
pdev->name, omap_rtc_timer);
goto fail0;
}
if ((omap_rtc_timer != omap_rtc_alarm) &&
(devm_request_irq(&pdev->dev, omap_rtc_alarm, rtc_irq, 0,
dev_name(&rtc->dev), rtc))) {
pr_debug("%s: RTC alarm interrupt IRQ%d already claimed\n",
pdev->name, omap_rtc_alarm);
goto fail0;
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 */
@ -496,13 +490,14 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
return 0;
fail0:
err:
device_init_wakeup(&pdev->dev, false);
if (id_entry->driver_data & OMAP_RTC_HAS_KICKER)
rtc_writel(0, OMAP_RTC_KICK0_REG);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
return -EIO;
return ret;
}
static int __exit omap_rtc_remove(struct platform_device *pdev)