Merge tag 'for-linus-5.1b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git...
[sfrench/cifs-2.6.git] / drivers / acpi / blacklist.c
1 /*
2  *  blacklist.c
3  *
4  *  Check to see if the given machine has a known bad ACPI BIOS
5  *  or if the BIOS is too old.
6  *  Check given machine against acpi_rev_dmi_table[].
7  *
8  *  Copyright (C) 2004 Len Brown <len.brown@intel.com>
9  *  Copyright (C) 2002 Andy Grover <andrew.grover@intel.com>
10  *
11  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
12  *
13  *  This program is free software; you can redistribute it and/or modify
14  *  it under the terms of the GNU General Public License as published by
15  *  the Free Software Foundation; either version 2 of the License, or (at
16  *  your option) any later version.
17  *
18  *  This program is distributed in the hope that it will be useful, but
19  *  WITHOUT ANY WARRANTY; without even the implied warranty of
20  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
21  *  General Public License for more details.
22  *
23  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24  */
25
26 #include <linux/kernel.h>
27 #include <linux/init.h>
28 #include <linux/acpi.h>
29 #include <linux/dmi.h>
30
31 #include "internal.h"
32
33 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst;
34
35 /*
36  * POLICY: If *anything* doesn't work, put it on the blacklist.
37  *         If they are critical errors, mark it critical, and abort driver load.
38  */
39 static struct acpi_platform_list acpi_blacklist[] __initdata = {
40         /* Compaq Presario 1700 */
41         {"PTLTD ", "  DSDT  ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
42          "Multiple problems", 1},
43         /* Sony FX120, FX140, FX150? */
44         {"SONY  ", "U0      ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
45          "ACPI driver problem", 1},
46         /* Compaq Presario 800, Insyde BIOS */
47         {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
48          "Does not use _REG to protect EC OpRegions", 1},
49         /* IBM 600E - _ADR should return 7, but it returns 1 */
50         {"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
51          "Incorrect _ADR", 1},
52
53         { }
54 };
55
56 int __init acpi_blacklisted(void)
57 {
58         int i;
59         int blacklisted = 0;
60
61         i = acpi_match_platform_list(acpi_blacklist);
62         if (i >= 0) {
63                 pr_err(PREFIX "Vendor \"%6.6s\" System \"%8.8s\" Revision 0x%x has a known ACPI BIOS problem.\n",
64                        acpi_blacklist[i].oem_id,
65                        acpi_blacklist[i].oem_table_id,
66                        acpi_blacklist[i].oem_revision);
67
68                 pr_err(PREFIX "Reason: %s. This is a %s error\n",
69                        acpi_blacklist[i].reason,
70                        (acpi_blacklist[i].data ?
71                         "non-recoverable" : "recoverable"));
72
73                 blacklisted = acpi_blacklist[i].data;
74         }
75
76         (void)early_acpi_osi_init();
77         dmi_check_system(acpi_rev_dmi_table);
78
79         return blacklisted;
80 }
81 #ifdef CONFIG_DMI
82 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
83 static int __init dmi_enable_rev_override(const struct dmi_system_id *d)
84 {
85         printk(KERN_NOTICE PREFIX "DMI detected: %s (force ACPI _REV to 5)\n",
86                d->ident);
87         acpi_rev_override_setup(NULL);
88         return 0;
89 }
90 #endif
91
92 static const struct dmi_system_id acpi_rev_dmi_table[] __initconst = {
93 #ifdef CONFIG_ACPI_REV_OVERRIDE_POSSIBLE
94         /*
95          * DELL XPS 13 (2015) switches sound between HDA and I2S
96          * depending on the ACPI _REV callback. If userspace supports
97          * I2S sufficiently (or if you do not care about sound), you
98          * can safely disable this quirk.
99          */
100         {
101          .callback = dmi_enable_rev_override,
102          .ident = "DELL XPS 13 (2015)",
103          .matches = {
104                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
105                       DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9343"),
106                 },
107         },
108         {
109          .callback = dmi_enable_rev_override,
110          .ident = "DELL Precision 5520",
111          .matches = {
112                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
113                       DMI_MATCH(DMI_PRODUCT_NAME, "Precision 5520"),
114                 },
115         },
116         {
117          .callback = dmi_enable_rev_override,
118          .ident = "DELL Precision 3520",
119          .matches = {
120                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
121                       DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3520"),
122                 },
123         },
124         /*
125          * Resolves a quirk with the Dell Latitude 3350 that
126          * causes the ethernet adapter to not function.
127          */
128         {
129          .callback = dmi_enable_rev_override,
130          .ident = "DELL Latitude 3350",
131          .matches = {
132                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
133                       DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 3350"),
134                 },
135         },
136         {
137          .callback = dmi_enable_rev_override,
138          .ident = "DELL Inspiron 7537",
139          .matches = {
140                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
141                       DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"),
142                 },
143         },
144 #endif
145         {}
146 };
147
148 #endif /* CONFIG_DMI */