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rtc: fix driver data issues in several rtc drivers

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Herton Ronaldo Krzesinski recently raised up, and fixed, an issue with the
rtc_cmos driver, which was referring to an inconsistent driver data.

This patch ensures that driver data registration happens before
rtc_device_register().

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Thomas Hommel <thomas.hommel@gefanuc.com>
Acked-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Andrew Sharp <andy.sharp@onstor.com>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Alexander Bigga <ab@mycable.de>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Mark Zhan <rongkai.zhan@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alessandro Zummo 2009-12-15 16:45:53 -08:00 • committed by Linus Torvalds
parent d1b2efa83f
commit b74d2caa64
10 changed files with 44 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

14
drivers/rtc/rtc-ds1305.c
View file

@ -617,7 +617,6 @@ static struct bin_attribute nvram = {
static int __devinit ds1305_probe(struct spi_device *spi)
{
struct ds1305 *ds1305;
struct rtc_device *rtc;
int status;
u8 addr, value;
struct ds1305_platform_data *pdata = spi->dev.platform_data;
@ -756,14 +755,13 @@ static int __devinit ds1305_probe(struct spi_device *spi)
dev_dbg(&spi->dev, "AM/PM\n");
/* register RTC ... from here on, ds1305->ctrl needs locking */
rtc = rtc_device_register("ds1305", &spi->dev,
ds1305->rtc = rtc_device_register("ds1305", &spi->dev,
&ds1305_ops, THIS_MODULE);
if (IS_ERR(rtc)) {
status = PTR_ERR(rtc);
if (IS_ERR(ds1305->rtc)) {
status = PTR_ERR(ds1305->rtc);
dev_dbg(&spi->dev, "register rtc --> %d\n", status);
goto fail0;
}
ds1305->rtc = rtc;
/* Maybe set up alarm IRQ; be ready to handle it triggering right
* away. NOTE that we don't share this. The signal is active low,
@ -774,7 +772,7 @@ static int __devinit ds1305_probe(struct spi_device *spi)
if (spi->irq) {
INIT_WORK(&ds1305->work, ds1305_work);
status = request_irq(spi->irq, ds1305_irq,
0, dev_name(&rtc->dev), ds1305);
0, dev_name(&ds1305->rtc->dev), ds1305);
if (status < 0) {
dev_dbg(&spi->dev, "request_irq %d --> %d\n",
spi->irq, status);
@ -794,7 +792,7 @@ static int __devinit ds1305_probe(struct spi_device *spi)
fail2:
free_irq(spi->irq, ds1305);
fail1:
rtc_device_unregister(rtc);
rtc_device_unregister(ds1305->rtc);
fail0:
kfree(ds1305);
return status;
@ -802,7 +800,7 @@ fail0:
static int __devexit ds1305_remove(struct spi_device *spi)
{
struct ds1305 *ds1305 = spi_get_drvdata(spi);
struct ds1305 *ds1305 = spi_get_drvdata(spi);
sysfs_remove_bin_file(&spi->dev.kobj, &nvram);