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iio: cdc: ad7150: relax return value check for IRQ get

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fwnode_irq_get[_byname]() were changed to not return 0 anymore. The
special error case where device-tree based IRQ mapping fails can't no
longer be reliably detected from this return value. This yields a
functional change in the driver where the mapping failure is treated as
an error.

The mapping failure can occur for example when the device-tree IRQ
information translation call-back(s) (xlate) fail, IRQ domain is not
found, IRQ type conflicts, etc. In most cases this indicates an error in
the device-tree and special handling is not really required.

One more thing to note is that ACPI APIs do not return zero for any
failures so this special handling did only apply on device-tree based
systems.

Drop the special handling for DT mapping failures as these can no longer
be separated from other errors at driver side. Change all failures in
IRQ getting to be handled by continuing without the events instead of
aborting the probe upon certain errors.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/3ad1c6f195ead3dfa8711235e1dead139d27f700.1690890774.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Matti Vaittinen 2023-08-01 15:02:47 +03:00 committed by Jonathan Cameron
parent 1402913c92
commit b20f5801ec
1 changed files with 5 additions and 5 deletions
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10
drivers/iio/cdc/ad7150.c
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@ -541,6 +541,7 @@ static int ad7150_probe(struct i2c_client *client)
const struct i2c_device_id *id = i2c_client_get_device_id(client);
struct ad7150_chip_info *chip;
struct iio_dev *indio_dev;
bool use_irq = true;
int ret;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
@ -561,14 +562,13 @@ static int ad7150_probe(struct i2c_client *client)
chip->interrupts[0] = fwnode_irq_get(dev_fwnode(&client->dev), 0);
if (chip->interrupts[0] < 0)
return chip->interrupts[0];
if (id->driver_data == AD7150) {
use_irq = false;
else if (id->driver_data == AD7150) {
chip->interrupts[1] = fwnode_irq_get(dev_fwnode(&client->dev), 1);
if (chip->interrupts[1] < 0)
return chip->interrupts[1];
use_irq = false;
}
if (chip->interrupts[0] &&
(id->driver_data == AD7151 || chip->interrupts[1])) {
if (use_irq) {
irq_set_status_flags(chip->interrupts[0], IRQ_NOAUTOEN);
ret = devm_request_threaded_irq(&client->dev,
chip->interrupts[0],