From aefcaf9d1b3ebb30981627bd08f595211a648a62 Mon Sep 17 00:00:00 2001
From: Corey Minyard <cminyard@mvista.com>
Date: Mon, 20 Jan 2020 11:07:25 -0600
Subject: [PATCH] i386:acpi: Remove _HID from the SMBus ACPI entry

Per the ACPI spec (version 6.1, section 6.1.5 _HID) it is not required
on enumerated buses (like PCI in this case), _ADR is required (and is
already there).  And the _HID value is wrong.  Linux appears to ignore
the _HID entry, but Windows 10 detects it as 'Unknown Device' and there
is no driver available.  See https://bugs.launchpad.net/qemu/+bug/1856724

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200120170725.24935-6-minyard@acm.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/i386/acpi-build.c              |   1 -
 tests/data/acpi/q35/DSDT          | Bin 7879 -> 7869 bytes
 tests/data/acpi/q35/DSDT.acpihmat | Bin 9203 -> 9193 bytes
 tests/data/acpi/q35/DSDT.bridge   | Bin 7896 -> 7886 bytes
 tests/data/acpi/q35/DSDT.cphp     | Bin 8342 -> 8332 bytes
 tests/data/acpi/q35/DSDT.dimmpxm  | Bin 9532 -> 9522 bytes
 tests/data/acpi/q35/DSDT.ipmibt   | Bin 7954 -> 7944 bytes
 tests/data/acpi/q35/DSDT.memhp    | Bin 9238 -> 9228 bytes
 tests/data/acpi/q35/DSDT.mmio64   | Bin 9009 -> 8999 bytes
 tests/data/acpi/q35/DSDT.numamem  | Bin 7885 -> 7875 bytes
 10 files changed, 1 deletion(-)

diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index e25df838f0..9c4e46fa74 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1816,7 +1816,6 @@ static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func)
     Aml *scope = aml_scope("_SB.PCI0");
     Aml *dev = aml_device("SMB0");
 
-    aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0005")));
     aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
     build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0");
     aml_append(scope, dev);
diff --git a/tests/data/acpi/q35/DSDT b/tests/data/acpi/q35/DSDT
index 77ea60ffed421c566138fe6341421f579129a582..1f91888d7a485850cf27f152e247a90b208003dc 100644
GIT binary patch
delta 42
xcwRehyVsV>CD<iouN(sdBf~~6V@W}2z4&0K_yA{5gXkvyU|%PL%@LCMtN{E}3u*uW

delta 52
zcwXCUd)$`GCD<k8xEuomWBo=hV@YXMz4&0K_yA{5gXkv7U|%N#j(87G7aleN2G-4f
HlKHFvhbs+g

diff --git a/tests/data/acpi/q35/DSDT.acpihmat b/tests/data/acpi/q35/DSDT.acpihmat
index 30e3717b5b87dbd706e90915cb0be1ff3ff8df06..3586f6368a77d1497c35a7571c9f6c460221d9ab 100644
GIT binary patch
delta 42
ycwYPL{?eVxCD<k8r7{Bp<GGDo#*%{4dhx+d@d3`B2GLFY!M;ugn<FG=a{&M<%nb$r

delta 52
zcwT$y{@I<&CD<k8voZq%qwhv8V@YXMz4&0K_yA{5gXkv7U|%N#j(87G7aleN2G-4f
HlC!x0ox%<V

diff --git a/tests/data/acpi/q35/DSDT.bridge b/tests/data/acpi/q35/DSDT.bridge
index fbc2d40000428b402586ea9302b5ccf36ef8de1e..eae3a2a8657e9986d8ac592958503c0b516faaef 100644
GIT binary patch
delta 42
xcwW0<d(M{2CD<k8oE!rK<ARM`#*%{4dhx+d@d3`B2GLFY!M;ugn<FF}SOFEN3{C(5

delta 52
zcwRead&8E?CD<k8h8zO}qx?oLV@YXMz4&0K_yA{5gXkv7U|%N#j(87G7aleN2G-4f
Hk`1f?g02lt

diff --git a/tests/data/acpi/q35/DSDT.cphp b/tests/data/acpi/q35/DSDT.cphp
index 6a896cb2142feadbcabc6276b59c138a7e93f540..53d735a4de25c4d8e23eed102fcd01376168c5b3 100644
GIT binary patch
delta 42
xcwU?4*yG6M66_MvqrkwxSh<nQSW-}0FFx2QKET=2Ai9Y^*w@KmbA+TFI{@^p3o8Hs

delta 52
zcwXyqoaV^o66_K(O@V=d@yA9kV@YXMz4&0K_yA{5gXkv7U|%N#j(87G7aleN2G-4f
Hl6LF>e&h`+

diff --git a/tests/data/acpi/q35/DSDT.dimmpxm b/tests/data/acpi/q35/DSDT.dimmpxm
index 23fdf5e60a5069f60d6c680ac9c68c4a8a81318e..02ccdd5f38d5b2356dcca89398c41dcf2595dfff 100644
GIT binary patch
delta 42
xcwXD%waJUiCD<jzNR@$s(P<->v8151UVN}qe1Nm3L39&;u&<NB<_O6r+yL|Y3#R}8

delta 52
zcwXD&wa1IgCD<jzMwNkq@!&=-V@YXMz4&0K_yA{5gXkv7U|%N#j(87G7aleN2G-4f
Hl25n+d}a-&

diff --git a/tests/data/acpi/q35/DSDT.ipmibt b/tests/data/acpi/q35/DSDT.ipmibt
index c3fca0a71efa7b55c958a49f305389426fbe7922..9e2d4f785c54629d233924a503cfe81199e22aa0 100644
GIT binary patch
delta 42
xcwU=i*I~!y66_MfA<w|TsIrl(PEt@>FFx2QKET=2Ai9Y^*w@Km^J2+-Rsi7S3kU!J

delta 52
zcwXzUn`Fo366_KpB+tOWxOgL1ouss?UVN}qe1Nm3L3ER3u&<K=N4$rp3lEzB1MB9Q
HlKHFvWcdvU

diff --git a/tests/data/acpi/q35/DSDT.memhp b/tests/data/acpi/q35/DSDT.memhp
index 2abd0e36cd1344cbca3fa4ab59c5db2ea326d125..baefa611acadce4c6da5babdaafad533d19358e6 100644
GIT binary patch
delta 42
xcwU?4(c{7866_Mfqr$+z_;Dkbv8151UVN}qe1Nm3L39&;u&<NB<_O7sTmba|3%CFP

delta 52
zcwX!AnC8Ld66_KprozC$Sg?`HSW;S5FFx2QKET=2Ai7C1*w@K`Bi_T)g@;XmfpxQ=
H<UTF{S(^;F

diff --git a/tests/data/acpi/q35/DSDT.mmio64 b/tests/data/acpi/q35/DSDT.mmio64
index b32034a11c1f8a0a156df3765df44b14a88dbb4d..aae0ea2110a54b02f772d99e66df0730d74b43d9 100644
GIT binary patch
delta 42
xcwXD+w%m=&CD<iIU73M_aqUJfV@W}2z4&0K_yA{5gXkvyU|%PL%@L9}IRW`53)%nx

delta 52
zcwSrXw$Y8tCD<jzP?>>&QD-BUv81%BUVN}qe1Nm3L3ER3u&<K=N4$rp3lEzB1M6l#
H$(x)2UJ(r1

diff --git a/tests/data/acpi/q35/DSDT.numamem b/tests/data/acpi/q35/DSDT.numamem
index d8b2b47f8b47067d375021a30086ca97d8aca43f..859a2e08710ba37f56c9c32b0235ff90cedb1905 100644
GIT binary patch
delta 42
xcwReed)SuCCD<k8up9#e<Eo8Z#*%{4dhx+d@d3`B2GLFY!M;ugn<FGkSpgBb3@iWu

delta 52
zcwRefd)AiACD<k8tQ-Raqvl2~V@YXMz4&0K_yA{5gXkv7U|%N#j(87G7aleN2G-4f
HlBKKwec25x

-- 
2.11.4.GIT