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rtc: isl1208: do not advertise update interrupt feature if no interrupt specified

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If an ISL1208 device does not have an interrupt line routed, the feature
shouldn't be advertised (it is by default in rtc core) or it'll confuse
userspace requesting that feature (such as hwclock from util-linux).

Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220523145320.123713-1-foss+kernel@0leil.net
This commit is contained in:
Quentin Schulz 2022-05-23 16:53:20 +02:00 • committed by Alexandre Belloni
parent 139682400a
commit 2023c5c8fe
1 changed files with 7 additions and 3 deletions
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10
drivers/rtc/rtc-isl1208.c
View file

@ -880,10 +880,14 @@ isl1208_probe(struct i2c_client *client, const struct i2c_device_id *id)
if (rc)
return rc;
if (client->irq > 0)
if (client->irq > 0) {
rc = isl1208_setup_irq(client, client->irq);
if (rc)
return rc;
if (rc)
return rc;
} else {
clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, isl1208->rtc->features);
}
if (evdet_irq > 0 && evdet_irq != client->irq)
rc = isl1208_setup_irq(client, evdet_irq);