On 2/10/23 16:51, Andy Shevchenko wrote:
> The acpi_evaluate_dsm_typed() provides a way to check the type of the
> object evaluated by _DSM call. Use it instead of open coded variant.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
> ---
> drivers/mmc/host/sdhci-pci-core.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
> index 7c14feb5db77..025b31aa712c 100644
> --- a/drivers/mmc/host/sdhci-pci-core.c
> +++ b/drivers/mmc/host/sdhci-pci-core.c
> @@ -483,11 +483,12 @@ static int __intel_dsm(struct intel_host *intel_host, struct device *dev,
> int err = 0;
> size_t len;
>
> - obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_dsm_guid, 0, fn, NULL);
> + obj = acpi_evaluate_dsm_typed(ACPI_HANDLE(dev), &intel_dsm_guid, 0, fn, NULL,
> + ACPI_TYPE_BUFFER);
> if (!obj)
> return -EOPNOTSUPP;
>
> - if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < 1) {
> + if (obj->buffer.length < 1) {
> err = -EINVAL;
> goto out;
> }
