linux-kernel - Re: [PATCH 2/2] staging: vchiq_arm: Use devm

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Message-ID: <50425e82-2a41-4a3b-a983-2560ab0ccab2@gmx.net>
Date: Sun, 13 Oct 2024 11:13:51 +0200
From: Stefan Wahren <wahrenst@....net>
To: Umang Jain <umang.jain@...asonboard.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>
Cc: linux-rpi-kernel@...ts.infradead.org,
 linux-arm-kernel@...ts.infradead.org, linux-staging@...ts.linux.dev,
 linux-kernel@...r.kernel.org,
 Kieran Bingham <kieran.bingham@...asonboard.com>,
 Dan Carpenter <dan.carpenter@...aro.org>,
 Laurent Pinchart <laurent.pinchart@...asonboard.com>,
 kernel-list@...pberrypi.com
Subject: Re: [PATCH 2/2] staging: vchiq_arm: Use devm_kzalloc for mgmt

Hi Umang,

Am 13.10.24 um 10:45 schrieb Umang Jain:
> Signed-off-by: Umang Jain <umang.jain@...asonboard.com>
except of the missing commit message, this patch looks good to me. I
understand the concerns about devm_kzalloc, but I think this doesn't
apply in this case.

Since this should be treated as RFC, is it already tested?

Regards
> ---
>   drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 4 +---
>   1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
> index e780ed714a14..334fb7037766 100644
> --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
> +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
> @@ -1345,7 +1345,7 @@ static int vchiq_probe(struct platform_device *pdev)
>   		return -ENOENT;
>   	}
>
> -	mgmt = kzalloc(sizeof(*mgmt), GFP_KERNEL);
> +	mgmt = devm_kzalloc(&pdev->dev, sizeof(*mgmt), GFP_KERNEL);
>   	if (!mgmt)
>   		return -ENOMEM;
>
> @@ -1403,8 +1403,6 @@ static void vchiq_remove(struct platform_device *pdev)
>
>   	arm_state = vchiq_platform_get_arm_state(&mgmt->state);
>   	kthread_stop(arm_state->ka_thread);
> -
> -	kfree(mgmt);
>   }
>
>   static struct platform_driver vchiq_driver = {