[PATCH 42/51] drm/gm12u320: More drmm_

[Hans de Goede]

Hi,

On 2/21/20 10:03 PM, Daniel Vetter wrote:
> The drm_mode_config_cleanup call we can drop, and all the allocations
> we can switch over to drmm_kzalloc. Unfortunately the work queue is
> still present, so can't get rid of the drm_driver->release function
> outright.
> 
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> Cc: Hans de Goede <hdegoede at redhat.com>
> Cc: "Noralf Trønnes" <noralf at tronnes.org>

Patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede at redhat.com>

Regards,

Hans



> ---
>   drivers/gpu/drm/tiny/gm12u320.c | 18 +++++++-----------
>   1 file changed, 7 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/gpu/drm/tiny/gm12u320.c b/drivers/gpu/drm/tiny/gm12u320.c
> index 3928f69bbd3d..5bd26fc6fafa 100644
> --- a/drivers/gpu/drm/tiny/gm12u320.c
> +++ b/drivers/gpu/drm/tiny/gm12u320.c
> @@ -160,7 +160,7 @@ static int gm12u320_usb_alloc(struct gm12u320_device *gm12u320)
>   	int i, block_size;
>   	const char *hdr;
>   
> -	gm12u320->cmd_buf = kmalloc(CMD_SIZE, GFP_KERNEL);
> +	gm12u320->cmd_buf = drmm_kmalloc(&gm12u320->dev, CMD_SIZE, GFP_KERNEL);
>   	if (!gm12u320->cmd_buf)
>   		return -ENOMEM;
>   
> @@ -173,7 +173,8 @@ static int gm12u320_usb_alloc(struct gm12u320_device *gm12u320)
>   			hdr = data_block_header;
>   		}
>   
> -		gm12u320->data_buf[i] = kzalloc(block_size, GFP_KERNEL);
> +		gm12u320->data_buf[i] = drmm_kzalloc(&gm12u320->dev,
> +						     block_size, GFP_KERNEL);
>   		if (!gm12u320->data_buf[i])
>   			return -ENOMEM;
>   
> @@ -192,15 +193,8 @@ static int gm12u320_usb_alloc(struct gm12u320_device *gm12u320)
>   
>   static void gm12u320_usb_free(struct gm12u320_device *gm12u320)
>   {
> -	int i;
> -
>   	if (gm12u320->fb_update.workq)
>   		destroy_workqueue(gm12u320->fb_update.workq);
> -
> -	for (i = 0; i < GM12U320_BLOCK_COUNT; i++)
> -		kfree(gm12u320->data_buf[i]);
> -
> -	kfree(gm12u320->cmd_buf);
>   }
>   
>   static int gm12u320_misc_request(struct gm12u320_device *gm12u320,
> @@ -636,7 +630,6 @@ static void gm12u320_driver_release(struct drm_device *dev)
>   	struct gm12u320_device *gm12u320 = dev->dev_private;
>   
>   	gm12u320_usb_free(gm12u320);
> -	drm_mode_config_cleanup(dev);
>   }
>   
>   DEFINE_DRM_GEM_FOPS(gm12u320_fops);
> @@ -693,7 +686,10 @@ static int gm12u320_usb_probe(struct usb_interface *interface,
>   	dev->dev_private = gm12u320;
>   	drmm_add_final_kfree(dev, gm12u320);
>   
> -	drm_mode_config_init(dev);
> +	ret = drm_mode_config_init(dev);
> +	if (ret)
> +		goto err_put;
> +
>   	dev->mode_config.min_width = GM12U320_USER_WIDTH;
>   	dev->mode_config.max_width = GM12U320_USER_WIDTH;
>   	dev->mode_config.min_height = GM12U320_HEIGHT;
>