Re: [PATCH -next] mmc: core: fix return value check in devm_mmc_alloc_host()

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On Fri, 17 Feb 2023 at 03:44, Yang Yingliang <yangyingliang@xxxxxxxxxx> wrote:
>
> mmc_alloc_host() returns NULL pointer not PTR_ERR(), if it
> fails, so replace the IS_ERR() check with NULL pointer check.
>
> In commit 418f7c2de133 ("mmc: meson-gx: use devm_mmc_alloc_host"),
> it checks NULL pointer not PTR_ERR, if devm_mmc_alloc_host() fails,
> so make it to return NULL pointer to keep same with mmc_alloc_host(),
> the drivers don't need to change the error handle when switch to
> use devm_mmc_alloc_host().
>
> Fixes: 80df83c2c57e ("mmc: core: add devm_mmc_alloc_host")
> Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>

Applied for next, thanks!

Kind regards
Uffe

> ---
>  drivers/mmc/core/host.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
> index 6a7475ad7685..096093f7be00 100644
> --- a/drivers/mmc/core/host.c
> +++ b/drivers/mmc/core/host.c
> @@ -599,12 +599,12 @@ struct mmc_host *devm_mmc_alloc_host(struct device *dev, int extra)
>
>         dr = devres_alloc(devm_mmc_host_release, sizeof(*dr), GFP_KERNEL);
>         if (!dr)
> -               return ERR_PTR(-ENOMEM);
> +               return NULL;
>
>         host = mmc_alloc_host(extra, dev);
> -       if (IS_ERR(host)) {
> +       if (!host) {
>                 devres_free(dr);
> -               return host;
> +               return NULL;
>         }
>
>         *dr = host;
> --
> 2.25.1
>



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