Re: [PATCH 23/42] mmc: sdhci-of-bst: Use devm_of_reserved_mem_device_init_by_idx()

[Ulf Hansson]

On Fri, Jul 3, 2026 at 9:48 PM Mukesh Ojha <mukesh.ojha@xxxxxxxxxxxxxxxx> wrote:
>
> Use the devres-managed devm_of_reserved_mem_device_init_by_idx() instead
> of the manual of_reserved_mem_device_init_by_idx()/
> of_reserved_mem_device_release() pair, letting the device resource
> manager handle cleanup automatically.
>
> Signed-off-by: Mukesh Ojha <mukesh.ojha@xxxxxxxxxxxxxxxx>

Acked-by: Ulf Hansson <ulfh@xxxxxxxxxx>

Kind regards
Uffe

> ---
>  drivers/mmc/host/sdhci-of-bst.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-of-bst.c b/drivers/mmc/host/sdhci-of-bst.c
> index f8d3df715e1a..304554ced690 100644
> --- a/drivers/mmc/host/sdhci-of-bst.c
> +++ b/drivers/mmc/host/sdhci-of-bst.c
> @@ -405,7 +405,6 @@ static void sdhci_bst_free_bounce_buffer(struct sdhci_host *host)
>                                   host->bounce_buffer, host->bounce_addr);
>                 host->bounce_buffer = NULL;
>         }
> -       of_reserved_mem_device_release(mmc_dev(host->mmc));
>  }
>
>  static int sdhci_bst_alloc_bounce_buffer(struct sdhci_host *host)
> @@ -417,7 +416,7 @@ static int sdhci_bst_alloc_bounce_buffer(struct sdhci_host *host)
>         /* Fixed SRAM bounce size to 32KB: verified config under 32-bit DMA addressing limit */
>         bounce_size = SZ_32K;
>
> -       ret = of_reserved_mem_device_init_by_idx(mmc_dev(mmc), mmc_dev(mmc)->of_node, 0);
> +       ret = devm_of_reserved_mem_device_init_by_idx(mmc_dev(mmc), mmc_dev(mmc)->of_node, 0);
>         if (ret) {
>                 dev_err(mmc_dev(mmc), "Failed to initialize reserved memory\n");
>                 return ret;
> @@ -425,10 +424,8 @@ static int sdhci_bst_alloc_bounce_buffer(struct sdhci_host *host)
>
>         host->bounce_buffer = dma_alloc_coherent(mmc_dev(mmc), bounce_size,
>                                                  &host->bounce_addr, GFP_KERNEL);
> -       if (!host->bounce_buffer) {
> -               of_reserved_mem_device_release(mmc_dev(mmc));
> +       if (!host->bounce_buffer)
>                 return -ENOMEM;
> -       }
>
>         host->bounce_buffer_size = bounce_size;
>
> --
> 2.53.0
>