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Commit a896a014 authored by Rafael Mendonca's avatar Rafael Mendonca Committed by Greg Kroah-Hartman
Browse files

vfio: platform: Do not pass return buffer to ACPI _RST method 



[ Upstream commit e67e070632a665c932d534b8b800477bb3111449 ]

The ACPI _RST method has no return value, there's no need to pass a return
buffer to acpi_evaluate_object().

Fixes: d30daa33 ("vfio: platform: call _RST method when using ACPI")
Signed-off-by: default avatarRafael Mendonca <rafaelmendsr@gmail.com>
Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
Link: https://lore.kernel.org/r/20221018152825.891032-1-rafaelmendsr@gmail.com


Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent affe3cea

drivers/vfio/platform/vfio_platform_common.c

+1 −2
Original line number Diff line number Diff line
@@ -77,12 +77,11 @@ static int vfio_platform_acpi_call_reset(struct vfio_platform_device *vdev, 
				  const char **extra_dbg)

{

#ifdef CONFIG_ACPI

	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };

	struct device *dev = vdev->device;

	acpi_handle handle = ACPI_HANDLE(dev);

	acpi_status acpi_ret;



	acpi_ret = acpi_evaluate_object(handle, "_RST", NULL, &buffer);

	acpi_ret = acpi_evaluate_object(handle, "_RST", NULL, NULL);

	if (ACPI_FAILURE(acpi_ret)) {

		if (extra_dbg)

			*extra_dbg = acpi_format_exception(acpi_ret);