linux-kernel - Re: [PATCH v2] drm/hisilicon: Use drmm_kzalloc() instead of devm

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Date:   Thu, 2 Jul 2020 09:20:29 +0200
From:   Thomas Zimmermann <tzimmermann@...e.de>
To:     Tian Tao <tiantao6@...ilicon.com>, puck.chen@...ilicon.com,
        airlied@...ux.ie, daniel@...ll.ch, kraxel@...hat.com,
        alexander.deucher@....com, tglx@...utronix.de,
        dri-devel@...ts.freedesktop.org, xinliang.liu@...aro.org,
        linux-kernel@...r.kernel.org
Cc:     linuxarm@...wei.com
Subject: Re: [PATCH v2] drm/hisilicon: Use drmm_kzalloc() instead of
 devm_kzalloc()

Hi

Am 02.07.20 um 09:06 schrieb Tian Tao:
> using the new API drmm_kzalloc() instead of devm_kzalloc()
> 
> v2:
> keep the DRM include statements sorted alphabetically.
> 
> Signed-off-by: Tian Tao <tiantao6@...ilicon.com>
> Reviewed-by: Thomas Zimmermann <tzimmermann@...e.de>
> ---
>  drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 18 +++++++++---------
>  1 file changed, 9 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> index a6fd0c2..b557728 100644
> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
> @@ -11,18 +11,18 @@
>   *	Jianhua Li <lijianhua@...wei.com>
>   */
>  
> +#include <drm/drm_gem_vram_helper.h>
> +#include <drm/drm_atomic_helper.h>
> +#include <drm/drm_probe_helper.h>
> +#include <drm/drm_fb_helper.h>
> +#include <drm/drm_managed.h>
> +#include <drm/drm_vblank.h>
> +#include <drm/drm_print.h>
>  #include <linux/console.h>
>  #include <linux/module.h>
> -#include <linux/pci.h>
> -
> -#include <drm/drm_atomic_helper.h>
>  #include <drm/drm_drv.h>
> -#include <drm/drm_fb_helper.h>
> -#include <drm/drm_gem_vram_helper.h>
>  #include <drm/drm_irq.h>
> -#include <drm/drm_print.h>
> -#include <drm/drm_probe_helper.h>
> -#include <drm/drm_vblank.h>
> +#include <linux/pci.h>

Ok, that's a bit too much. :D

First of all, it's still not alphabetically. Second, linux headers go
first, then drm headers follow. It should look like

 #include <linux/...>
 #include <linux/...>
 #include <linux/...>

 #include <drm/...>
 #include <drm/...>
 #include <drm/...>

with each block sorted alphabetically.

If you include drm_managed.h right before drm_print.h, it should be fine
already.

Best regards
Thomas

>  
>  #include "hibmc_drm_drv.h"
>  #include "hibmc_drm_regs.h"
> @@ -267,7 +267,7 @@ static int hibmc_load(struct drm_device *dev)
>  	struct hibmc_drm_private *priv;
>  	int ret;
>  
> -	priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
> +	priv = drmm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
>  	if (!priv) {
>  		DRM_ERROR("no memory to allocate for hibmc_drm_private\n");
>  		return -ENOMEM;
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer



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