git.oblomov.eu Git - linux-2.6/blob - 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_osi_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  *  You should have received a copy of the GNU General Public License along
  24  *  with this program; if not, write to the Free Software Foundation, Inc.,
  25  *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  26  *
  27  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  28  */
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/acpi.h>
  34 #include <acpi/acpi_bus.h>
  35 #include <linux/dmi.h>
  36
  37 enum acpi_blacklist_predicates {
  38         all_versions,
  39         less_than_or_equal,
  40         equal,
  41         greater_than_or_equal,
  42 };
  43
  44 struct acpi_blacklist_item {
  45         char oem_id[7];
  46         char oem_table_id[9];
  47         u32 oem_revision;
  48         char *table;
  49         enum acpi_blacklist_predicates oem_revision_predicate;
  50         char *reason;
  51         u32 is_critical_error;
  52 };
  53
  54 static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
  55
  56 /*
  57  * POLICY: If *anything* doesn't work, put it on the blacklist.
  58  *         If they are critical errors, mark it critical, and abort driver load.
  59  */
  60 static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
  61         /* Compaq Presario 1700 */
  62         {"PTLTD ", "  DSDT  ", 0x06040000, ACPI_SIG_DSDT, less_than_or_equal,
  63          "Multiple problems", 1},
  64         /* Sony FX120, FX140, FX150? */
  65         {"SONY  ", "U0      ", 0x20010313, ACPI_SIG_DSDT, less_than_or_equal,
  66          "ACPI driver problem", 1},
  67         /* Compaq Presario 800, Insyde BIOS */
  68         {"INT440", "SYSFexxx", 0x00001001, ACPI_SIG_DSDT, less_than_or_equal,
  69          "Does not use _REG to protect EC OpRegions", 1},
  70         /* IBM 600E - _ADR should return 7, but it returns 1 */
  71         {"IBM   ", "TP600E  ", 0x00000105, ACPI_SIG_DSDT, less_than_or_equal,
  72          "Incorrect _ADR", 1},
  73         {"ASUS\0\0", "P2B-S   ", 0, ACPI_SIG_DSDT, all_versions,
  74          "Bogus PCI routing", 1},
  75
  76         {""}
  77 };
  78
  79 #if     CONFIG_ACPI_BLACKLIST_YEAR
  80
  81 static int __init blacklist_by_year(void)
  82 {
  83         int year = dmi_get_year(DMI_BIOS_DATE);
  84         /* Doesn't exist? Likely an old system */
  85         if (year == -1) {
  86                 printk(KERN_ERR PREFIX "no DMI BIOS year, "
  87                         "acpi=force is required to enable ACPI\n" );
  88                 return 1;
  89         }
  90         /* 0? Likely a buggy new BIOS */
  91         if (year == 0) {
  92                 printk(KERN_ERR PREFIX "DMI BIOS year==0, "
  93                         "assuming ACPI-capable machine\n" );
  94                 return 0;
  95         }
  96         if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
  97                 printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
  98                        "acpi=force is required to enable ACPI\n",
  99                        year, CONFIG_ACPI_BLACKLIST_YEAR);
 100                 return 1;
 101         }
 102         return 0;
 103 }
 104 #else
 105 static inline int blacklist_by_year(void)
 106 {
 107         return 0;
 108 }
 109 #endif
 110
 111 int __init acpi_blacklisted(void)
 112 {
 113         int i = 0;
 114         int blacklisted = 0;
 115         struct acpi_table_header table_header;
 116
 117         while (acpi_blacklist[i].oem_id[0] != '\0') {
 118                 if (acpi_get_table_header(acpi_blacklist[i].table, 0, &table_header)) {
 119                         i++;
 120                         continue;
 121                 }
 122
 123                 if (strncmp(acpi_blacklist[i].oem_id, table_header.oem_id, 6)) {
 124                         i++;
 125                         continue;
 126                 }
 127
 128                 if (strncmp
 129                     (acpi_blacklist[i].oem_table_id, table_header.oem_table_id,
 130                      8)) {
 131                         i++;
 132                         continue;
 133                 }
 134
 135                 if ((acpi_blacklist[i].oem_revision_predicate == all_versions)
 136                     || (acpi_blacklist[i].oem_revision_predicate ==
 137                         less_than_or_equal
 138                         && table_header.oem_revision <=
 139                         acpi_blacklist[i].oem_revision)
 140                     || (acpi_blacklist[i].oem_revision_predicate ==
 141                         greater_than_or_equal
 142                         && table_header.oem_revision >=
 143                         acpi_blacklist[i].oem_revision)
 144                     || (acpi_blacklist[i].oem_revision_predicate == equal
 145                         && table_header.oem_revision ==
 146                         acpi_blacklist[i].oem_revision)) {
 147
 148                         printk(KERN_ERR PREFIX
 149                                "Vendor \"%6.6s\" System \"%8.8s\" "
 150                                "Revision 0x%x has a known ACPI BIOS problem.\n",
 151                                acpi_blacklist[i].oem_id,
 152                                acpi_blacklist[i].oem_table_id,
 153                                acpi_blacklist[i].oem_revision);
 154
 155                         printk(KERN_ERR PREFIX
 156                                "Reason: %s. This is a %s error\n",
 157                                acpi_blacklist[i].reason,
 158                                (acpi_blacklist[i].
 159                                 is_critical_error ? "non-recoverable" :
 160                                 "recoverable"));
 161
 162                         blacklisted = acpi_blacklist[i].is_critical_error;
 163                         break;
 164                 } else {
 165                         i++;
 166                 }
 167         }
 168
 169         blacklisted += blacklist_by_year();
 170
 171         dmi_check_system(acpi_osi_dmi_table);
 172
 173         return blacklisted;
 174 }
 175 #ifdef CONFIG_DMI
 176 static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
 177 {
 178         acpi_dmi_osi_linux(1, d);       /* enable */
 179         return 0;
 180 }
 181 static int __init dmi_disable_osi_linux(const struct dmi_system_id *d)
 182 {
 183         acpi_dmi_osi_linux(0, d);       /* disable */
 184         return 0;
 185 }
 186 static int __init dmi_unknown_osi_linux(const struct dmi_system_id *d)
 187 {
 188         acpi_dmi_osi_linux(-1, d);      /* unknown */
 189         return 0;
 190 }
 191
 192 /*
 193  * Most BIOS that invoke OSI(Linux) do nothing with it.
 194  * But some cause Linux to break.
 195  * Only a couple use it to make Linux run better.
 196  *
 197  * Thus, Linux should continue to disable OSI(Linux) by default,
 198  * should continue to discourage BIOS writers from using it, and
 199  * should whitelist the few existing systems that require it.
 200  *
 201  * If it appears clear a vendor isn't using OSI(Linux)
 202  * for anything constructive, blacklist them by name to disable
 203  * unnecessary dmesg warnings on all of their products.
 204  */
 205
 206 static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 207         /*
 208          * Disable OSI(Linux) warnings on all "Acer, inc."
 209          *
 210          * _OSI(Linux) disables the latest Windows BIOS code:
 211          * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5050"),
 212          * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5580"),
 213          * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 3010"),
 214          * _OSI(Linux) effect unknown:
 215          * DMI_MATCH(DMI_PRODUCT_NAME, "Ferrari 5000"),
 216          */
 217         {
 218         .callback = dmi_disable_osi_linux,
 219         .ident = "Acer, inc.",
 220         .matches = {
 221                      DMI_MATCH(DMI_SYS_VENDOR, "Acer, inc."),
 222                 },
 223         },
 224         /*
 225          * Disable OSI(Linux) warnings on all "Acer"
 226          *
 227          * _OSI(Linux) effect unknown:
 228          * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
 229          * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
 230          * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720Z"),
 231          * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5520"),
 232          * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 6460"),
 233          * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 7510"),
 234          * DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5220"),
 235          */
 236         {
 237         .callback = dmi_unknown_osi_linux,
 238         .ident = "Acer",
 239         .matches = {
 240                      DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
 241                 },
 242         },
 243         /*
 244          * Disable OSI(Linux) warnings on all "Apple Computer, Inc."
 245          *
 246          * _OSI(Linux) confirmed to be a NOP:
 247          * DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
 248          * DMI_MATCH(DMI_PRODUCT_NAME, "MacBook2,1"),
 249          * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2"),
 250          * _OSI(Linux) effect unknown:
 251          * DMI_MATCH(DMI_PRODUCT_NAME, "MacPro2,1"),
 252          * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,1"),
 253          * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
 254          */
 255         {
 256         .callback = dmi_disable_osi_linux,
 257         .ident = "Apple",
 258         .matches = {
 259                      DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
 260                 },
 261         },
 262         /*
 263          * Disable OSI(Linux) warnings on all "BenQ"
 264          *
 265          * _OSI(Linux) confirmed to be a NOP:
 266          * DMI_MATCH(DMI_PRODUCT_NAME, "Joybook S31"),
 267          */
 268         {
 269         .callback = dmi_disable_osi_linux,
 270         .ident = "BenQ",
 271         .matches = {
 272                      DMI_MATCH(DMI_SYS_VENDOR, "BenQ"),
 273                 },
 274         },
 275         /*
 276          * Disable OSI(Linux) warnings on all "Clevo Co."
 277          *
 278          * _OSI(Linux) confirmed to be a NOP:
 279          * DMI_MATCH(DMI_PRODUCT_NAME, "M570RU"),
 280          */
 281         {
 282         .callback = dmi_disable_osi_linux,
 283         .ident = "Clevo",
 284         .matches = {
 285                      DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
 286                 },
 287         },
 288         /*
 289          * Disable OSI(Linux) warnings on all "COMPAL"
 290          *
 291          * _OSI(Linux) confirmed to be a NOP:
 292          * DMI_MATCH(DMI_BOARD_NAME, "HEL8X"),
 293          * _OSI(Linux) unknown effect:
 294          * DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
 295          */
 296         {
 297         .callback = dmi_unknown_osi_linux,
 298         .ident = "Compal",
 299         .matches = {
 300                      DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
 301                 },
 302         },
 303         { /* OSI(Linux) touches USB, breaks suspend to disk */
 304         .callback = dmi_disable_osi_linux,
 305         .ident = "Dell Dimension 5150",
 306         .matches = {
 307                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 308                      DMI_MATCH(DMI_PRODUCT_NAME, "Dell DM051"),
 309                 },
 310         },
 311         { /* OSI(Linux) is a NOP */
 312         .callback = dmi_disable_osi_linux,
 313         .ident = "Dell",
 314         .matches = {
 315                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 316                      DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1501"),
 317                 },
 318         },
 319         { /* OSI(Linux) effect unknown */
 320         .callback = dmi_unknown_osi_linux,
 321         .ident = "Dell",
 322         .matches = {
 323                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 324                      DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D830"),
 325                 },
 326         },
 327         { /* OSI(Linux) effect unknown */
 328         .callback = dmi_unknown_osi_linux,
 329         .ident = "Dell",
 330         .matches = {
 331                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 332                      DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex GX620"),
 333                 },
 334         },
 335         { /* OSI(Linux) effect unknown */
 336         .callback = dmi_unknown_osi_linux,
 337         .ident = "Dell",
 338         .matches = {
 339                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 340                      DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1900"),
 341                 },
 342         },
 343         { /* OSI(Linux) touches USB */
 344         .callback = dmi_disable_osi_linux,
 345         .ident = "Dell",
 346         .matches = {
 347                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 348                      DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation 390"),
 349                 },
 350         },
 351         { /* OSI(Linux) is a NOP */
 352         .callback = dmi_disable_osi_linux,
 353         .ident = "Dell Vostro 1000",
 354         .matches = {
 355                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 356                      DMI_MATCH(DMI_PRODUCT_NAME, "Vostro   1000"),
 357                 },
 358         },
 359         { /* OSI(Linux) effect unknown */
 360         .callback = dmi_unknown_osi_linux,
 361         .ident = "Dell",
 362         .matches = {
 363                      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 364                      DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge SC440"),
 365                 },
 366         },
 367         { /* OSI(Linux) effect unknown */
 368         .callback = dmi_unknown_osi_linux,
 369         .ident = "Dialogue Flybook V5",
 370         .matches = {
 371                      DMI_MATCH(DMI_SYS_VENDOR, "Dialogue Technology Corporation"),
 372                      DMI_MATCH(DMI_PRODUCT_NAME, "Flybook V5"),
 373                 },
 374         },
 375         /*
 376          * Disable OSI(Linux) warnings on all "FUJITSU SIEMENS"
 377          *
 378          * _OSI(Linux) disables latest Windows BIOS code:
 379          * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 2510"),
 380          * _OSI(Linux) confirmed to be a NOP:
 381          * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 1536"),
 382          * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 1556"),
 383          * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 1546"),
 384          * _OSI(Linux) unknown effect:
 385          * DMI_MATCH(DMI_PRODUCT_NAME, "Amilo M1425"),
 386          * DMI_MATCH(DMI_PRODUCT_NAME, "Amilo Si 1520"),
 387          * DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
 388          */
 389         {
 390         .callback = dmi_disable_osi_linux,
 391         .ident = "Fujitsu Siemens",
 392         .matches = {
 393                      DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
 394                 },
 395         },
 396         /*
 397          * Disable OSI(Linux) warnings on all "Hewlett-Packard"
 398          *
 399          * _OSI(Linux) confirmed to be a NOP:
 400          * .ident = "HP Pavilion tx 1000"
 401          * DMI_MATCH(DMI_BOARD_NAME, "30BF"),
 402          * .ident = "HP Pavilion dv2000"
 403          * DMI_MATCH(DMI_BOARD_NAME, "30B5"),
 404          * .ident = "HP Pavilion dv5000",
 405          * DMI_MATCH(DMI_BOARD_NAME, "30A7"),
 406          * .ident = "HP Pavilion dv6300 30BC",
 407          * DMI_MATCH(DMI_BOARD_NAME, "30BC"),
 408          * .ident = "HP Pavilion dv6000",
 409          * DMI_MATCH(DMI_BOARD_NAME, "30B7"),
 410          * DMI_MATCH(DMI_BOARD_NAME, "30B8"),
 411          * .ident = "HP Pavilion dv9000",
 412          * DMI_MATCH(DMI_BOARD_NAME, "30B9"),
 413          * .ident = "HP Pavilion dv9500",
 414          * DMI_MATCH(DMI_BOARD_NAME, "30CB"),
 415          * .ident = "HP/Compaq Presario C500",
 416          * DMI_MATCH(DMI_BOARD_NAME, "30C6"),
 417          * .ident = "HP/Compaq Presario F500",
 418          * DMI_MATCH(DMI_BOARD_NAME, "30D3"),
 419          * _OSI(Linux) unknown effect:
 420          * .ident = "HP Pavilion dv6500",
 421          * DMI_MATCH(DMI_BOARD_NAME, "30D0"),
 422          */
 423         {
 424         .callback = dmi_disable_osi_linux,
 425         .ident = "Hewlett-Packard",
 426         .matches = {
 427                      DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
 428                 },
 429         },
 430         /*
 431          * Lenovo has a mix of systems OSI(Linux) situations
 432          * and thus we can not wildcard the vendor.
 433          *
 434          * _OSI(Linux) helps sound
 435          * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
 436          * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
 437          * _OSI(Linux) is a NOP:
 438          * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
 439          */
 440         {
 441         .callback = dmi_enable_osi_linux,
 442         .ident = "Lenovo ThinkPad R61",
 443         .matches = {
 444                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 445                      DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
 446                 },
 447         },
 448         {
 449         .callback = dmi_enable_osi_linux,
 450         .ident = "Lenovo ThinkPad T61",
 451         .matches = {
 452                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 453                      DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
 454                 },
 455         },
 456         {
 457         .callback = dmi_unknown_osi_linux,
 458         .ident = "Lenovo 3000 V100",
 459         .matches = {
 460                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 461                      DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
 462                 },
 463         },
 464         {
 465         .callback = dmi_disable_osi_linux,
 466         .ident = "Lenovo 3000 N100",
 467         .matches = {
 468                      DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 469                      DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
 470                 },
 471         },
 472         /*
 473          * Disable OSI(Linux) warnings on all "LG Electronics"
 474          *
 475          * _OSI(Linux) confirmed to be a NOP:
 476          * DMI_MATCH(DMI_PRODUCT_NAME, "P1-J150B"),
 477          */
 478         {
 479         .callback = dmi_disable_osi_linux,
 480         .ident = "LG",
 481         .matches = {
 482                      DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
 483                 },
 484         },
 485         /* NEC - OSI(Linux) effect unknown */
 486         {
 487         .callback = dmi_unknown_osi_linux,
 488         .ident = "NEC VERSA M360",
 489         .matches = {
 490                      DMI_MATCH(DMI_SYS_VENDOR, "NEC Computers SAS"),
 491                      DMI_MATCH(DMI_PRODUCT_NAME, "NEC VERSA M360"),
 492                 },
 493         },
 494         /*
 495          * Disable OSI(Linux) warnings on all "Samsung Electronics"
 496          *
 497          * OSI(Linux) disables PNP0C32 and other BIOS code for Windows:
 498          * DMI_MATCH(DMI_PRODUCT_NAME, "R40P/R41P"),
 499          * DMI_MATCH(DMI_PRODUCT_NAME, "R59P/R60P/R61P"),
 500          */
 501         {
 502         .callback = dmi_disable_osi_linux,
 503         .ident = "Samsung",
 504         .matches = {
 505                      DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
 506                 },
 507         },
 508         /*
 509          * Disable OSI(Linux) warnings on all "Sony Corporation"
 510          *
 511          * _OSI(Linux) is a NOP:
 512          * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ650N"),
 513          * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ38GP_C"),
 514          * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-TZ21MN_N"),
 515          * _OSI(Linux) unknown effect:
 516          * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ11M"),
 517          */
 518         {
 519         .callback = dmi_unknown_osi_linux,
 520         .ident = "Sony",
 521         .matches = {
 522                      DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
 523                 },
 524         },
 525         /*
 526          * Disable OSI(Linux) warnings on all "TOSHIBA"
 527          *
 528          * _OSI(Linux) breaks sound (bugzilla 7787):
 529          * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P100"),
 530          * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P105"),
 531          * _OSI(Linux) is a NOP:
 532          * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A100"),
 533          * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A210"),
 534          * _OSI(Linux) unknown effect:
 535          * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A135"),
 536          * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A200"),
 537          * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P205"),
 538          * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U305"),
 539          */
 540         {
 541         .callback = dmi_disable_osi_linux,
 542         .ident = "Toshiba",
 543         .matches = {
 544                      DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
 545                 },
 546         },
 547         {}
 548 };
 549
 550 #endif /* CONFIG_DMI */