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scsi: ufs: ufs-pci: Switch to use acpi_evaluate_dsm_typed()

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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@linux.intel.com>
Link: https://lore.kernel.org/r/20231002135125.2602895-1-andriy.shevchenko@linux.intel.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Andy Shevchenko 2023-10-02 16:51:25 +03:00 committed by Martin K. Petersen
parent e66413faa5
commit fcf3fb7bd5
1 changed files with 3 additions and 2 deletions
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5
drivers/ufs/host/ufshcd-pci.c
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@ -58,11 +58,12 @@ 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;
}