December 22, 2023 at 1:52 PM, "Philipp Stanner" mailto:pstan...@redhat.com?to=%22Philipp%20Stanner%22%20%3Cpstanner%40redhat.com%3E
> wrote:
>
> tilcdc currently just ioremaps its iomem, without doing the (a bit more
> robust) request on the memory first. The devm_ functions provide a handy
> way to both request and ioremap the memory with automatic cleanup.
>
> Replace the manual ioremap with the devm_ version.
>
> Suggested-by: Thomas Zimmermann
> Signed-off-by: Philipp Stanner
Reviewed-by: Jyri Sarha
Tested-by: Jyri Sarha
I'll apply this shortly to drm-misc-next.
Thanks,
Jyri
> ---
> drivers/gpu/drm/tilcdc/tilcdc_drv.c | 19 ---
> 1 file changed, 4 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
> b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
> index 8ebd7134ee21..2ad3f44a6e2d 100644
> --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
> +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
> @@ -182,9 +182,6 @@ static void tilcdc_fini(struct drm_device *dev)
> if (priv->clk)
> clk_put(priv->clk);
>
> - if (priv->mmio)
> - iounmap(priv->mmio);
> -
> if (priv->wq)
> destroy_workqueue(priv->wq);
>
> @@ -201,7 +198,6 @@ static int tilcdc_init(const struct drm_driver *ddrv,
> struct device *dev)
> struct platform_device *pdev = to_platform_device(dev);
> struct device_node *node = dev->of_node;
> struct tilcdc_drm_private *priv;
> - struct resource *res;
> u32 bpp = 0;
> int ret;
>
> @@ -226,17 +222,10 @@ static int tilcdc_init(const struct drm_driver *ddrv,
> struct device *dev)
> goto init_failed;
> }
>
> - res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> - if (!res) {
> - dev_err(dev, "failed to get memory resource\n");
> - ret = -EINVAL;
> - goto init_failed;
> - }
> -
> - priv->mmio = ioremap(res->start, resource_size(res));
> - if (!priv->mmio) {
> - dev_err(dev, "failed to ioremap\n");
> - ret = -ENOMEM;
> + priv->mmio = devm_platform_ioremap_resource(pdev, 0);
> + if (IS_ERR(priv->mmio)) {
> + dev_err(dev, "failed to request / ioremap\n");
> + ret = PTR_ERR(priv->mmio);
> goto init_failed;
> }
>
> --
> 2.43.0
>
