linux-kernel - Re: [PATCH v2] xen: make functions in xen-acpi-processor return void

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Date:   Fri, 31 Mar 2017 11:13:51 -0400
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org,
        xen-devel@...ts.xenproject.org
Cc:     konrad.wilk@...cle.com
Subject: Re: [PATCH v2] xen: make functions in xen-acpi-processor return void

On 03/31/2017 10:40 AM, Juergen Gross wrote:
> There are several functions in xen-acpi-processor which either always
> return the same value or where the returned value is never checked.
>
> Make the functions return void.
>
> Signed-off-by: Juergen Gross <jgross@...e.com>
> ---
>  drivers/xen/xen-acpi-processor.c | 51 +++++++++++++++-------------------------
>  1 file changed, 19 insertions(+), 32 deletions(-)
>
> diff --git a/drivers/xen/xen-acpi-processor.c b/drivers/xen/xen-acpi-processor.c
> index 23e391d..45be017 100644
> --- a/drivers/xen/xen-acpi-processor.c
> +++ b/drivers/xen/xen-acpi-processor.c
> @@ -54,7 +54,7 @@ static unsigned long *acpi_id_present;
>  /* And if there is an _CST definition (or a PBLK) for the ACPI IDs */
>  static unsigned long *acpi_id_cst_present;
>  
> -static int push_cxx_to_hypervisor(struct acpi_processor *_pr)
> +static void push_cxx_to_hypervisor(struct acpi_processor *_pr)
>  {
>  	struct xen_platform_op op = {
>  		.cmd			= XENPF_set_processor_pminfo,
> @@ -70,7 +70,7 @@ static int push_cxx_to_hypervisor(struct acpi_processor *_pr)
>  	dst_cx_states = kcalloc(_pr->power.count,
>  				sizeof(struct xen_processor_cx), GFP_KERNEL);
>  	if (!dst_cx_states)
> -		return -ENOMEM;
> +		return;

Maybe pr_warn(_once)()?

In any case:

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>