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SubjectRe: [PATCH v3 3/3] i2c: smbus: Use device_*() functions instead of of_*()
On Thu, Jan 20, 2022 at 3:45 PM Akhil R <akhilrajeev@nvidia.com> wrote:
>
> Change of_*() functions to device_*() for firmware agnostic usage.
> This allows to have the smbus_alert interrupt without any changes
> in the controller drivers using the ACPI table.

This patch LGTM.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>

The 0 check needs a separate discussion and fixing, which is out of scope here.

> Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
> ---
> drivers/i2c/i2c-core-base.c | 2 +-
> drivers/i2c/i2c-core-smbus.c | 10 +++++-----
> drivers/i2c/i2c-smbus.c | 2 +-
> include/linux/i2c-smbus.h | 6 +++---
> 4 files changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
> index 2c59dd7..32a4526 100644
> --- a/drivers/i2c/i2c-core-base.c
> +++ b/drivers/i2c/i2c-core-base.c
> @@ -1479,7 +1479,7 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
> goto out_list;
> }
>
> - res = of_i2c_setup_smbus_alert(adap);
> + res = i2c_setup_smbus_alert(adap);
> if (res)
> goto out_reg;
>
> diff --git a/drivers/i2c/i2c-core-smbus.c b/drivers/i2c/i2c-core-smbus.c
> index e5b2d14..4c24c84 100644
> --- a/drivers/i2c/i2c-core-smbus.c
> +++ b/drivers/i2c/i2c-core-smbus.c
> @@ -701,13 +701,13 @@ struct i2c_client *i2c_new_smbus_alert_device(struct i2c_adapter *adapter,
> }
> EXPORT_SYMBOL_GPL(i2c_new_smbus_alert_device);
>
> -#if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_OF)
> -int of_i2c_setup_smbus_alert(struct i2c_adapter *adapter)
> +#if IS_ENABLED(CONFIG_I2C_SMBUS)
> +int i2c_setup_smbus_alert(struct i2c_adapter *adapter)
> {
> int irq;
>
> - irq = of_property_match_string(adapter->dev.of_node, "interrupt-names",
> - "smbus_alert");
> + irq = device_property_match_string(adapter->dev.parent, "interrupt-names",
> + "smbus_alert");
> if (irq == -EINVAL || irq == -ENODATA)
> return 0;
> else if (irq < 0)
> @@ -715,5 +715,5 @@ int of_i2c_setup_smbus_alert(struct i2c_adapter *adapter)
>
> return PTR_ERR_OR_ZERO(i2c_new_smbus_alert_device(adapter, NULL));
> }
> -EXPORT_SYMBOL_GPL(of_i2c_setup_smbus_alert);
> +EXPORT_SYMBOL_GPL(i2c_setup_smbus_alert);
> #endif
> diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c
> index d3d06e3..fdd6d97 100644
> --- a/drivers/i2c/i2c-smbus.c
> +++ b/drivers/i2c/i2c-smbus.c
> @@ -128,7 +128,7 @@ static int smbalert_probe(struct i2c_client *ara,
> if (setup) {
> irq = setup->irq;
> } else {
> - irq = of_irq_get_byname(adapter->dev.of_node, "smbus_alert");
> + irq = device_irq_get_byname(adapter->dev.parent, "smbus_alert");
> if (irq <= 0)
> return irq;
> }
> diff --git a/include/linux/i2c-smbus.h b/include/linux/i2c-smbus.h
> index 1ef4218..95cf902 100644
> --- a/include/linux/i2c-smbus.h
> +++ b/include/linux/i2c-smbus.h
> @@ -30,10 +30,10 @@ struct i2c_client *i2c_new_smbus_alert_device(struct i2c_adapter *adapter,
> struct i2c_smbus_alert_setup *setup);
> int i2c_handle_smbus_alert(struct i2c_client *ara);
>
> -#if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_OF)
> -int of_i2c_setup_smbus_alert(struct i2c_adapter *adap);
> +#if IS_ENABLED(CONFIG_I2C_SMBUS)
> +int i2c_setup_smbus_alert(struct i2c_adapter *adap);
> #else
> -static inline int of_i2c_setup_smbus_alert(struct i2c_adapter *adap)
> +static inline int i2c_setup_smbus_alert(struct i2c_adapter *adap)
> {
> return 0;
> }
> --
> 2.7.4
>


--
With Best Regards,
Andy Shevchenko

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