From: Eric Auger <[email protected]>
Currently, only function 0 is supported. According to the ACPI
Specification, Revision 6.6, Section 9.1.1 “_DSM (Device Specific
Method)”, bit 0 should be 0 to indicate that no other functions
are supported beyond function 0.
The resulting AML change looks like this:
Method (_DSM, 4, NotSerialized) // _DSM: Device-Specific Method
{
If ((Arg0 == ToUUID ("e5c937d0-3553-4d7a-9117-ea4d19c3434d")
{
If ((Arg2 == Zero))
{
Return (Buffer (One)
{
- 0x01 // .
+ 0x00 // .
})
}
}
}
Fixes: 5b85eabe68f9 ("acpi: add acpi_dsdt_add_gpex")
Signed-off-by: Eric Auger <[email protected]>
Signed-off-by: Shameer Kolothum <[email protected]>
Tested-by: Zhangfei Gao <[email protected]>
Reviewed-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
Message-Id: <[email protected]>
---
hw/pci-host/gpex-acpi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/pci-host/gpex-acpi.c b/hw/pci-host/gpex-acpi.c
index 952a0ace19..4587baeb78 100644
--- a/hw/pci-host/gpex-acpi.c
+++ b/hw/pci-host/gpex-acpi.c
@@ -64,7 +64,7 @@ static Aml *build_pci_host_bridge_dsm_method(void)
UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D");
ifctx = aml_if(aml_equal(aml_arg(0), UUID));
ifctx1 = aml_if(aml_equal(aml_arg(2), aml_int(0)));
- uint8_t byte_list[1] = {1};
+ uint8_t byte_list[1] = {0};
buf = aml_buffer(1, byte_list);
aml_append(ifctx1, aml_return(buf));
aml_append(ifctx, ifctx1);
--
MST
