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rtc: rtc-ds1374: fix 'no irq' case handling

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On a PowerPC board with ds1374 RTC I'm getting this error while RTC tries
to probe:

rtc-ds1374 0-0068: unable to request IRQ

This happens because I2C probing code (drivers/of/of_i2c.c) is specifying
IRQ0 for 'no irq' case, which is correct.

The driver handles this incorrectly, though. This patch fixes it.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Anton Vorontsov 2008-08-20 14:09:21 -07:00 committed by Linus Torvalds
parent 14bac5acfd
commit b42f931737
1 changed files with 5 additions and 5 deletions
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10
drivers/rtc/rtc-ds1374.c
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@ -173,7 +173,7 @@ static int ds1374_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
int cr, sr;
int ret = 0;
if (client->irq < 0)
if (client->irq <= 0)
return -EINVAL;
mutex_lock(&ds1374->mutex);
@ -212,7 +212,7 @@ static int ds1374_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
int cr;
int ret = 0;
if (client->irq < 0)
if (client->irq <= 0)
return -EINVAL;
ret = ds1374_read_time(dev, &now);
@ -381,7 +381,7 @@ static int ds1374_probe(struct i2c_client *client,
if (ret)
goto out_free;
if (client->irq >= 0) {
if (client->irq > 0) {
ret = request_irq(client->irq, ds1374_irq, 0,
"ds1374", client);
if (ret) {
@ -401,7 +401,7 @@ static int ds1374_probe(struct i2c_client *client,
return 0;
out_irq:
if (client->irq >= 0)
if (client->irq > 0)
free_irq(client->irq, client);
out_free:
@ -414,7 +414,7 @@ static int __devexit ds1374_remove(struct i2c_client *client)
{
struct ds1374 *ds1374 = i2c_get_clientdata(client);
if (client->irq >= 0) {
if (client->irq > 0) {
mutex_lock(&ds1374->mutex);
ds1374->exiting = 1;
mutex_unlock(&ds1374->mutex);