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authorSekhar Nori <nsekhar@ti.com>2014-06-06 14:36:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-06 16:08:08 -0700
commit337b600f898583b50b67e0bbff0667db2393d614 (patch)
tree66b6758d6ff96f6bd07b7b801f961b14d2e8a7a5 /drivers/rtc
parentc2a57550fec132c1e184c42ea13a619f9a9980e5 (diff)
downloadop-kernel-dev-337b600f898583b50b67e0bbff0667db2393d614.zip
op-kernel-dev-337b600f898583b50b67e0bbff0667db2393d614.tar.gz
drivers/rtc/rtc-omap.c: remove multiple device id checks
Remove multiple superfluous device id checks. Since an id_table is present in the driver probe() should never encounter an empty device id entry. In case of OF style match, of_match_device() returns an matching entry. For paranoia sake, check for device id entry once and fail probe() if none is found. This is much better than checking for it multiple times. Signed-off-by: Sekhar Nori <nsekhar@ti.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-omap.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index 26de5f8..70f5149 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -352,6 +352,12 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
if (of_id)
pdev->id_entry = of_id->data;
+ id_entry = platform_get_device_id(pdev);
+ if (!id_entry) {
+ dev_err(&pdev->dev, "no matching device entry\n");
+ return -ENODEV;
+ }
+
omap_rtc_timer = platform_get_irq(pdev, 0);
if (omap_rtc_timer <= 0) {
pr_debug("%s: no update irq?\n", pdev->name);
@@ -373,8 +379,7 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
- id_entry = platform_get_device_id(pdev);
- if (id_entry && (id_entry->driver_data & OMAP_RTC_HAS_KICKER)) {
+ if (id_entry->driver_data & OMAP_RTC_HAS_KICKER) {
rtc_writel(KICK0_VALUE, OMAP_RTC_KICK0_REG);
rtc_writel(KICK1_VALUE, OMAP_RTC_KICK1_REG);
}
@@ -452,7 +457,7 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
return 0;
fail0:
- if (id_entry && (id_entry->driver_data & OMAP_RTC_HAS_KICKER))
+ 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);
@@ -469,7 +474,7 @@ static int __exit omap_rtc_remove(struct platform_device *pdev)
/* leave rtc running, but disable irqs */
rtc_write(0, OMAP_RTC_INTERRUPTS_REG);
- if (id_entry && (id_entry->driver_data & OMAP_RTC_HAS_KICKER))
+ if (id_entry->driver_data & OMAP_RTC_HAS_KICKER)
rtc_writel(0, OMAP_RTC_KICK0_REG);
/* Disable the clock/module */
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