linux-kernel - Re: [PATCH] firmware: arm_scmi: Use the bitmap API to allocate bitmaps

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Message-ID: <Ys6iYFr/nTOmjW7i@e120937-lin>
Date:   Wed, 13 Jul 2022 11:45:52 +0100
From:   Cristian Marussi <cristian.marussi@....com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Sudeep Holla <sudeep.holla@....com>, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] firmware: arm_scmi: Use the bitmap API to allocate
 bitmaps

On Fri, Jul 08, 2022 at 09:30:01PM +0200, Christophe JAILLET wrote:
> Use devm_bitmap_zalloc() instead of hand-writing them.
> 
> It is less verbose and it improves the semantic.
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
>  drivers/firmware/arm_scmi/driver.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
> index 609ebedee9cb..b1265732d83a 100644
> --- a/drivers/firmware/arm_scmi/driver.c
> +++ b/drivers/firmware/arm_scmi/driver.c
> @@ -1911,8 +1911,8 @@ static int __scmi_xfer_info_init(struct scmi_info *sinfo,
>  	hash_init(info->pending_xfers);
>  
>  	/* Allocate a bitmask sized to hold MSG_TOKEN_MAX tokens */
> -	info->xfer_alloc_table = devm_kcalloc(dev, BITS_TO_LONGS(MSG_TOKEN_MAX),
> -					      sizeof(long), GFP_KERNEL);
> +	info->xfer_alloc_table = devm_bitmap_zalloc(dev, MSG_TOKEN_MAX,
> +						    GFP_KERNEL);
>  	if (!info->xfer_alloc_table)
>  		return -ENOMEM;
>  
LGTM.

Reviewed-by: Cristian Marussi <cristian.marussi@....com>
Tested-by: Cristian Marussi <cristian.marussi@....com>

Thanks,
Cristian