Subject: [PATCH v3 1/2] acpi: Fix proper return code for function acpi_gsi_to_irq

From: [email-masked] (Borislav Petkov)
Date: Sun, 10 Jan 2016 12:07:14 +0100

On Fri, Nov 06, 2015 at 05:51:58PM -0700, Loc Ho wrote:
> The function acpi_gsi_to_irq should returns 0 on success as upper function
> caller expect an 0 for sucesss.
> 
> Signed-off-by: Tuan Phan <[email-masked]>
> Signed-off-by: Loc Ho <[email-masked]>
> ---
>  drivers/acpi/gsi.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/acpi/gsi.c b/drivers/acpi/gsi.c
> index fa4585a..0ed1003 100644
> --- a/drivers/acpi/gsi.c
> +++ b/drivers/acpi/gsi.c
> @@ -43,7 +43,7 @@ static unsigned int acpi_gsi_get_irq_type(int trigger, int polarity)
>   *
>   * irq location updated with irq value [>0 on success, 0 on failure]
>   *
> - * Returns: linux IRQ number on success (>0)
> + * Returns: 0 on success
>   *          -EINVAL on failure
>   */
>  int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
> @@ -56,7 +56,7 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
>  	 * *irq == 0 means no mapping, that should
>  	 * be reported as a failure
>  	 */
> -	return (*irq > 0) ? *irq : -EINVAL;
> +	return (*irq > 0) ? 0 : -EINVAL;
>  }
>  EXPORT_SYMBOL_GPL(acpi_gsi_to_irq);

That function can be simplified. It should be made to return the irq
number on success and 0 on failure. No need for that *irq output
argument.

-- 
Regards/Gruss,
    Boris.

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