On 29/11/2018 18:46, Ulf Hansson wrote:
> Instead of having each psci init function taking care of the of_node_put(),
> let's deal with that from psci_dt_init(), as this enables a bit simpler
> error path for each psci init function.
> 
> Cc: Lina Iyer <[email protected]>
> Co-developed-by: Lina Iyer <[email protected]>
> Signed-off-by: Ulf Hansson <[email protected]>
> Acked-by: Mark Rutland <[email protected]>

Reviewed-by: Daniel Lezcano <[email protected]>


> ---
> 
> Changes in v10:
>       - None.
> 
> ---
>  drivers/firmware/psci/psci.c | 23 ++++++++++-------------
>  1 file changed, 10 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
> index 631e20720a22..6bfa47cbd174 100644
> --- a/drivers/firmware/psci/psci.c
> +++ b/drivers/firmware/psci/psci.c
> @@ -609,9 +609,9 @@ static int __init psci_0_2_init(struct device_node *np)
>       int err;
>  
>       err = get_set_conduit_method(np);
> -
>       if (err)
> -             goto out_put_node;
> +             return err;
> +
>       /*
>        * Starting with v0.2, the PSCI specification introduced a call
>        * (PSCI_VERSION) that allows probing the firmware version, so
> @@ -619,11 +619,7 @@ static int __init psci_0_2_init(struct device_node *np)
>        * can be carried out according to the specific version reported
>        * by firmware
>        */
> -     err = psci_probe();
> -
> -out_put_node:
> -     of_node_put(np);
> -     return err;
> +     return psci_probe();
>  }
>  
>  /*
> @@ -635,9 +631,8 @@ static int __init psci_0_1_init(struct device_node *np)
>       int err;
>  
>       err = get_set_conduit_method(np);
> -
>       if (err)
> -             goto out_put_node;
> +             return err;
>  
>       pr_info("Using PSCI v0.1 Function IDs from DT\n");
>  
> @@ -661,9 +656,7 @@ static int __init psci_0_1_init(struct device_node *np)
>               psci_ops.migrate = psci_migrate;
>       }
>  
> -out_put_node:
> -     of_node_put(np);
> -     return err;
> +     return 0;
>  }
>  
>  static const struct of_device_id psci_of_match[] __initconst = {
> @@ -678,6 +671,7 @@ int __init psci_dt_init(void)
>       struct device_node *np;
>       const struct of_device_id *matched_np;
>       psci_initcall_t init_fn;
> +     int ret;
>  
>       np = of_find_matching_node_and_match(NULL, psci_of_match, &matched_np);
>  
> @@ -685,7 +679,10 @@ int __init psci_dt_init(void)
>               return -ENODEV;
>  
>       init_fn = (psci_initcall_t)matched_np->data;
> -     return init_fn(np);
> +     ret = init_fn(np);
> +
> +     of_node_put(np);
> +     return ret;
>  }
>  
>  #ifdef CONFIG_ACPI
> 


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