From: Matti Vaittinen mazziesaccount@gmail.com
commit 56cd3d1c5c5b073a1a444eafdcf97d4d866d351a upstream.
The fwnode_irq_get_byname() was returning 0 at device-tree mapping error. If this occurred, the KX022A driver did abort the probe but errorneously directly returned the return value from fwnode_irq_get_byname() from probe. In case of a device-tree mapping error this indicated success.
The fwnode_irq_get_byname() has since been fixed to not return zero on error so the check for fwnode_irq_get_byname() can be relaxed to only treat negative values as errors. This will also do decent fix even when backported to branches where fwnode_irq_get_byname() can still return zero on error because KX022A probe should later fail at IRQ requesting and a prober error handling should follow.
Relax the return value check for fwnode_irq_get_byname() to only treat negative values as errors.
Reported-by: kernel test robot lkp@intel.com Reported-by: Dan Carpenter error27@gmail.com Closes: https://lore.kernel.org/r/202305110245.MFxC9bUj-lkp@intel.com/ Link: https://lore.kernel.org/r/202305110245.MFxC9bUj-lkp@intel.com/ Signed-off-by: Matti Vaittinen mazziesaccount@gmail.com Fixes: 7c1d1677b322 ("iio: accel: Support Kionix/ROHM KX022A accelerometer") Link: https://lore.kernel.org/r/b45b4b638db109c6078d243252df3a7b0485f7d5.168387538... Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/accel/kionix-kx022a.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/iio/accel/kionix-kx022a.c +++ b/drivers/iio/accel/kionix-kx022a.c @@ -1049,7 +1049,7 @@ int kx022a_probe_internal(struct device data->ien_reg = KX022A_REG_INC4; } else { irq = fwnode_irq_get_byname(fwnode, "INT2"); - if (irq <= 0) + if (irq < 0) return dev_err_probe(dev, irq, "No suitable IRQ\n");
data->inc_reg = KX022A_REG_INC5;