aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorLen Brown <len.brown@intel.com>2008-11-08 01:21:10 -0500
committerLen Brown <len.brown@intel.com>2008-11-27 01:55:21 -0500
commita6e0887f21bbab337ee32d9c0a84d7c0b6e9141b (patch)
treec11ccfd1d73aab2cd1fb65c3ae650fc6759c603b
parent95a28ed08619cc70f31611886ac7b26ab0e462dc (diff)
ACPI: delete OSI(Linux) DMI dmesg spam
Linux will continue to ignore OSI(Linux), except for a white-list containing a few systems. So delete the black-list, and stop soliciting user-feedback on the console. Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat
-rw-r--r--drivers/acpi/blacklist.c401
-rw-r--r--drivers/acpi/osl.c104
2 files changed, 30 insertions, 475 deletions
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index ea92bac42c53..09c69806c1fc 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -176,16 +176,6 @@ static int __init dmi_enable_osi_linux(const struct dmi_system_id *d)
176 acpi_dmi_osi_linux(1, d); /* enable */ 176 acpi_dmi_osi_linux(1, d); /* enable */
177 return 0; 177 return 0;
178} 178}
179static int __init dmi_disable_osi_linux(const struct dmi_system_id *d)
180{
181 acpi_dmi_osi_linux(0, d); /* disable */
182 return 0;
183}
184static int __init dmi_unknown_osi_linux(const struct dmi_system_id *d)
185{
186 acpi_dmi_osi_linux(-1, d); /* unknown */
187 return 0;
188}
189static int __init dmi_disable_osi_vista(const struct dmi_system_id *d) 179static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
190{ 180{
191 printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); 181 printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident);
@@ -193,295 +183,21 @@ static int __init dmi_disable_osi_vista(const struct dmi_system_id *d)
193 return 0; 183 return 0;
194} 184}
195 185
196/*
197 * Most BIOS that invoke OSI(Linux) do nothing with it.
198 * But some cause Linux to break.
199 * Only a couple use it to make Linux run better.
200 *
201 * Thus, Linux should continue to disable OSI(Linux) by default,
202 * should continue to discourage BIOS writers from using it, and
203 * should whitelist the few existing systems that require it.
204 *
205 * If it appears clear a vendor isn't using OSI(Linux)
206 * for anything constructive, blacklist them by name to disable
207 * unnecessary dmesg warnings on all of their products.
208 */
209
210static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { 186static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
211 /*
212 * Disable OSI(Linux) warnings on all "Acer, inc."
213 *
214 * _OSI(Linux) disables the latest Windows BIOS code:
215 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 3100"),
216 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5050"),
217 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
218 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5580"),
219 * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 3010"),
220 * _OSI(Linux) effect unknown:
221 * DMI_MATCH(DMI_PRODUCT_NAME, "Ferrari 5000"),
222 */
223 /*
224 * note that dmi_check_system() uses strstr()
225 * to match sub-strings rather than !strcmp(),
226 * so "Acer" below matches "Acer, inc." above.
227 */
228 /*
229 * Disable OSI(Linux) warnings on all "Acer"
230 *
231 * _OSI(Linux) effect unknown:
232 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
233 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720Z"),
234 * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5520"),
235 * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 6460"),
236 * DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 7510"),
237 *
238 * _OSI(Linux) is a NOP:
239 * DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"),
240 * DMI_MATCH(DMI_PRODUCT_NAME, "Extensa 5220"),
241 */
242 {
243 .callback = dmi_disable_osi_linux,
244 .ident = "Acer",
245 .matches = {
246 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
247 },
248 },
249 /*
250 * Disable OSI(Linux) warnings on all "Apple Computer, Inc."
251 * Disable OSI(Linux) warnings on all "Apple Inc."
252 *
253 * _OSI(Linux) confirmed to be a NOP:
254 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
255 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBook2,1"),
256 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2"),
257 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
258 * _OSI(Linux) effect unknown:
259 * DMI_MATCH(DMI_PRODUCT_NAME, "MacPro2,1"),
260 * DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,1"),
261 */
262 {
263 .callback = dmi_disable_osi_linux,
264 .ident = "Apple",
265 .matches = {
266 DMI_MATCH(DMI_SYS_VENDOR, "Apple"),
267 },
268 },
269 /*
270 * Disable OSI(Linux) warnings on all "BenQ"
271 *
272 * _OSI(Linux) confirmed to be a NOP:
273 * DMI_MATCH(DMI_PRODUCT_NAME, "Joybook S31"),
274 */
275 {
276 .callback = dmi_disable_osi_linux,
277 .ident = "BenQ",
278 .matches = {
279 DMI_MATCH(DMI_SYS_VENDOR, "BenQ"),
280 },
281 },
282 /*
283 * Disable OSI(Linux) warnings on all "Clevo Co."
284 *
285 * _OSI(Linux) confirmed to be a NOP:
286 * DMI_MATCH(DMI_PRODUCT_NAME, "M570RU"),
287 */
288 {
289 .callback = dmi_disable_osi_linux,
290 .ident = "Clevo",
291 .matches = {
292 DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
293 },
294 },
295 /*
296 * Disable OSI(Linux) warnings on all "COMPAL"
297 *
298 * _OSI(Linux) confirmed to be a NOP:
299 * DMI_MATCH(DMI_BOARD_NAME, "HEL8X"),
300 * _OSI(Linux) unknown effect:
301 * DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
302 */
303 {
304 .callback = dmi_disable_osi_linux,
305 .ident = "Compal",
306 .matches = {
307 DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"),
308 },
309 },
310 { /* OSI(Linux) touches USB, unknown side-effect */
311 .callback = dmi_disable_osi_linux,
312 .ident = "Dell Dimension 5150",
313 .matches = {
314 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
315 DMI_MATCH(DMI_PRODUCT_NAME, "Dell DM051"),
316 },
317 },
318 { /* OSI(Linux) is a NOP */
319 .callback = dmi_disable_osi_linux,
320 .ident = "Dell i1501",
321 .matches = {
322 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
323 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1501"),
324 },
325 },
326 { /* OSI(Linux) effect unknown */
327 .callback = dmi_unknown_osi_linux,
328 .ident = "Dell Latitude D830",
329 .matches = {
330 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
331 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D830"),
332 },
333 },
334 { /* OSI(Linux) effect unknown */
335 .callback = dmi_unknown_osi_linux,
336 .ident = "Dell OptiPlex GX620",
337 .matches = {
338 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
339 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex GX620"),
340 },
341 },
342 { /* OSI(Linux) causes some USB initialization to not run */
343 .callback = dmi_unknown_osi_linux,
344 .ident = "Dell OptiPlex 755",
345 .matches = {
346 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
347 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 755"),
348 },
349 },
350 { /* OSI(Linux) effect unknown */
351 .callback = dmi_unknown_osi_linux,
352 .ident = "Dell PE 1900",
353 .matches = {
354 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
355 DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1900"),
356 },
357 },
358 { /* OSI(Linux) is a NOP */
359 .callback = dmi_unknown_osi_linux,
360 .ident = "Dell PE 1950",
361 .matches = {
362 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
363 DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1950"),
364 },
365 },
366 { /* OSI(Linux) is a NOP */
367 .callback = dmi_disable_osi_linux,
368 .ident = "Dell PE R200",
369 .matches = {
370 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
371 DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge R200"),
372 },
373 },
374 { /* OSI(Linux) touches USB */
375 .callback = dmi_disable_osi_linux,
376 .ident = "Dell PR 390",
377 .matches = {
378 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
379 DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation 390"),
380 },
381 },
382 { /* OSI(Linux) touches USB */
383 .callback = dmi_unknown_osi_linux,
384 .ident = "Dell PR 390",
385 .matches = {
386 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
387 DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation 690"),
388 },
389 },
390 { /* OSI(Linux) unknown - ASL looks benign, but may effect dock/SMM */
391 .callback = dmi_unknown_osi_linux,
392 .ident = "Dell PR M4300",
393 .matches = {
394 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
395 DMI_MATCH(DMI_PRODUCT_NAME, "Precision M4300"),
396 },
397 },
398 { /* OSI(Linux) is a NOP */
399 .callback = dmi_disable_osi_linux,
400 .ident = "Dell Vostro 1000",
401 .matches = {
402 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
403 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1000"),
404 },
405 },
406 { /* OSI(Linux) effect unknown */
407 .callback = dmi_unknown_osi_linux,
408 .ident = "Dell PE SC440",
409 .matches = {
410 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
411 DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge SC440"),
412 },
413 },
414 { /* OSI(Linux) effect unknown */
415 .callback = dmi_unknown_osi_linux,
416 .ident = "Dialogue Flybook V5",
417 .matches = {
418 DMI_MATCH(DMI_SYS_VENDOR, "Dialogue Technology Corporation"),
419 DMI_MATCH(DMI_PRODUCT_NAME, "Flybook V5"),
420 },
421 },
422 /*
423 * Disable OSI(Linux) warnings on all "FUJITSU SIEMENS"
424 *
425 * _OSI(Linux) disables latest Windows BIOS code:
426 * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 2510"),
427 * _OSI(Linux) confirmed to be a NOP:
428 * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 1536"),
429 * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 1556"),
430 * DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 1546"),
431 * DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
432 * _OSI(Linux) unknown effect:
433 * DMI_MATCH(DMI_PRODUCT_NAME, "Amilo M1425"),
434 * DMI_MATCH(DMI_PRODUCT_NAME, "Amilo Si 1520"),
435 */
436 {
437 .callback = dmi_disable_osi_linux,
438 .ident = "Fujitsu Siemens",
439 .matches = {
440 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
441 },
442 },
443 { 187 {
444 .callback = dmi_disable_osi_vista, 188 .callback = dmi_disable_osi_vista,
445 .ident = "Fujitsu Siemens", 189 .ident = "Fujitsu Siemens",
446 .matches = { 190 .matches = {
447 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 191 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
448 DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"), 192 DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
449 }, 193 },
450 }, 194 },
195
451 /* 196 /*
452 * Disable OSI(Linux) warnings on all "Hewlett-Packard" 197 * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
453 * 198 * Linux ignores it, except for the machines enumerated below.
454 * _OSI(Linux) confirmed to be a NOP:
455 * .ident = "HP Pavilion tx 1000"
456 * DMI_MATCH(DMI_BOARD_NAME, "30BF"),
457 * .ident = "HP Pavilion dv2000"
458 * DMI_MATCH(DMI_BOARD_NAME, "30B5"),
459 * .ident = "HP Pavilion dv5000",
460 * DMI_MATCH(DMI_BOARD_NAME, "30A7"),
461 * .ident = "HP Pavilion dv6300 30BC",
462 * DMI_MATCH(DMI_BOARD_NAME, "30BC"),
463 * .ident = "HP Pavilion dv6000",
464 * DMI_MATCH(DMI_BOARD_NAME, "30B7"),
465 * DMI_MATCH(DMI_BOARD_NAME, "30B8"),
466 * .ident = "HP Pavilion dv9000",
467 * DMI_MATCH(DMI_BOARD_NAME, "30B9"),
468 * .ident = "HP Pavilion dv9500",
469 * DMI_MATCH(DMI_BOARD_NAME, "30CB"),
470 * .ident = "HP/Compaq Presario C500",
471 * DMI_MATCH(DMI_BOARD_NAME, "30C6"),
472 * .ident = "HP/Compaq Presario F500",
473 * DMI_MATCH(DMI_BOARD_NAME, "30D3"),
474 * _OSI(Linux) unknown effect:
475 * .ident = "HP Pavilion dv6500",
476 * DMI_MATCH(DMI_BOARD_NAME, "30D0"),
477 */ 199 */
478 { 200
479 .callback = dmi_disable_osi_linux,
480 .ident = "Hewlett-Packard",
481 .matches = {
482 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
483 },
484 },
485 /* 201 /*
486 * Lenovo has a mix of systems OSI(Linux) situations 202 * Lenovo has a mix of systems OSI(Linux) situations
487 * and thus we can not wildcard the vendor. 203 * and thus we can not wildcard the vendor.
@@ -519,113 +235,6 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
519 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"), 235 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
520 }, 236 },
521 }, 237 },
522 {
523 .callback = dmi_disable_osi_linux,
524 .ident = "Lenovo 3000 V100",
525 .matches = {
526 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
527 DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
528 },
529 },
530 {
531 .callback = dmi_disable_osi_linux,
532 .ident = "Lenovo 3000 N100",
533 .matches = {
534 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
535 DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
536 },
537 },
538 /*
539 * Disable OSI(Linux) warnings on all "LG Electronics"
540 *
541 * _OSI(Linux) confirmed to be a NOP:
542 * DMI_MATCH(DMI_PRODUCT_NAME, "P1-J150B"),
543 * with DMI_MATCH(DMI_BOARD_NAME, "ROCKY"),
544 *
545 * unknown:
546 * DMI_MATCH(DMI_PRODUCT_NAME, "S1-MDGDG"),
547 * with DMI_MATCH(DMI_BOARD_NAME, "ROCKY"),
548 */
549 {
550 .callback = dmi_disable_osi_linux,
551 .ident = "LG",
552 .matches = {
553 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
554 },
555 },
556 /* NEC - OSI(Linux) effect unknown */
557 {
558 .callback = dmi_unknown_osi_linux,
559 .ident = "NEC VERSA M360",
560 .matches = {
561 DMI_MATCH(DMI_SYS_VENDOR, "NEC Computers SAS"),
562 DMI_MATCH(DMI_PRODUCT_NAME, "NEC VERSA M360"),
563 },
564 },
565 /* Panasonic */
566 {
567 .callback = dmi_unknown_osi_linux,
568 .ident = "Panasonic",
569 .matches = {
570 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
571 /* Toughbook CF-52 */
572 DMI_MATCH(DMI_PRODUCT_NAME, "CF-52CCABVBG"),
573 },
574 },
575 /*
576 * Disable OSI(Linux) warnings on all "Samsung Electronics"
577 *
578 * OSI(Linux) disables PNP0C32 and other BIOS code for Windows:
579 * DMI_MATCH(DMI_PRODUCT_NAME, "R40P/R41P"),
580 * DMI_MATCH(DMI_PRODUCT_NAME, "R59P/R60P/R61P"),
581 */
582 {
583 .callback = dmi_disable_osi_linux,
584 .ident = "Samsung",
585 .matches = {
586 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
587 },
588 },
589 /*
590 * Disable OSI(Linux) warnings on all "Sony Corporation"
591 *
592 * _OSI(Linux) is a NOP:
593 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NR11S_S"),
594 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ38GP_C"),
595 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SZ650N"),
596 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-TZ21MN_N"),
597 * _OSI(Linux) unknown effect:
598 * DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ11M"),
599 */
600 {
601 .callback = dmi_disable_osi_linux,
602 .ident = "Sony",
603 .matches = {
604 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
605 },
606 },
607 /*
608 * Disable OSI(Linux) warnings on all "TOSHIBA"
609 *
610 * _OSI(Linux) breaks sound (bugzilla 7787):
611 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P100"),
612 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P105"),
613 * _OSI(Linux) is a NOP:
614 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A100"),
615 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A210"),
616 * _OSI(Linux) unknown effect:
617 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A135"),
618 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite A200"),
619 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P205"),
620 * DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U305"),
621 */
622 {
623 .callback = dmi_disable_osi_linux,
624 .ident = "Toshiba",
625 .matches = {
626 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
627 },
628 },
629 {} 238 {}
630}; 239};
631 240
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 4be252145cb4..c8111424dcb8 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -35,7 +35,6 @@
35#include <linux/interrupt.h> 35#include <linux/interrupt.h>
36#include <linux/kmod.h> 36#include <linux/kmod.h>
37#include <linux/delay.h> 37#include <linux/delay.h>
38#include <linux/dmi.h>
39#include <linux/workqueue.h> 38#include <linux/workqueue.h>
40#include <linux/nmi.h> 39#include <linux/nmi.h>
41#include <linux/acpi.h> 40#include <linux/acpi.h>
@@ -97,54 +96,44 @@ static DEFINE_SPINLOCK(acpi_res_lock);
97static char osi_additional_string[OSI_STRING_LENGTH_MAX]; 96static char osi_additional_string[OSI_STRING_LENGTH_MAX];
98 97
99/* 98/*
100 * "Ode to _OSI(Linux)" 99 * The story of _OSI(Linux)
101 * 100 *
102 * osi_linux -- Control response to BIOS _OSI(Linux) query. 101 * From pre-history through Linux-2.6.22,
102 * Linux responded TRUE upon a BIOS OSI(Linux) query.
103 * 103 *
104 * As Linux evolves, the features that it supports change. 104 * Unfortunately, reference BIOS writers got wind of this
105 * So an OSI string such as "Linux" is not specific enough 105 * and put OSI(Linux) in their example code, quickly exposing
106 * to be useful across multiple versions of Linux. It 106 * this string as ill-conceived and opening the door to
107 * doesn't identify any particular feature, interface, 107 * an un-bounded number of BIOS incompatibilities.
108 * or even any particular version of Linux...
109 * 108 *
110 * Unfortunately, Linux-2.6.22 and earlier responded "yes" 109 * For example, OSI(Linux) was used on resume to re-POST a
111 * to a BIOS _OSI(Linux) query. When 110 * video card on one system, because Linux at that time
112 * a reference mobile BIOS started using it, its use 111 * could not do a speedy restore in its native driver.
113 * started to spread to many vendor platforms. 112 * But then upon gaining quick native restore capability,
114 * As it is not supportable, we need to halt that spread. 113 * Linux has no way to tell the BIOS to skip the time-consuming
114 * POST -- putting Linux at a permanent performance disadvantage.
115 * On another system, the BIOS writer used OSI(Linux)
116 * to infer native OS support for IPMI! On other systems,
117 * OSI(Linux) simply got in the way of Linux claiming to
118 * be compatible with other operating systems, exposing
119 * BIOS issues such as skipped device initialization.
115 * 120 *
116 * Today, most BIOS references to _OSI(Linux) are noise -- 121 * So "Linux" turned out to be a really poor chose of
117 * they have no functional effect and are just dead code 122 * OSI string, and from Linux-2.6.23 onward we respond FALSE.
118 * carried over from the reference BIOS.
119 *
120 * The next most common case is that _OSI(Linux) harms Linux,
121 * usually by causing the BIOS to follow paths that are
122 * not tested during Windows validation.
123 *
124 * Finally, there is a short list of platforms
125 * where OSI(Linux) benefits Linux.
126 *
127 * In Linux-2.6.23, OSI(Linux) is first disabled by default.
128 * DMI is used to disable the dmesg warning about OSI(Linux)
129 * on platforms where it is known to have no effect.
130 * But a dmesg warning remains for systems where
131 * we do not know if OSI(Linux) is good or bad for the system.
132 * DMI is also used to enable OSI(Linux) for the machines
133 * that are known to need it.
134 * 123 *
135 * BIOS writers should NOT query _OSI(Linux) on future systems. 124 * BIOS writers should NOT query _OSI(Linux) on future systems.
136 * It will be ignored by default, and to get Linux to 125 * Linux will complain on the console when it sees it, and return FALSE.
137 * not ignore it will require a kernel source update to 126 * To get Linux to return TRUE for your system will require
138 * add a DMI entry, or a boot-time "acpi_osi=Linux" invocation. 127 * a kernel source update to add a DMI entry,
128 * or boot with "acpi_osi=Linux"
139 */ 129 */
140#define OSI_LINUX_ENABLE 0
141 130
142static struct osi_linux { 131static struct osi_linux {
143 unsigned int enable:1; 132 unsigned int enable:1;
144 unsigned int dmi:1; 133 unsigned int dmi:1;
145 unsigned int cmdline:1; 134 unsigned int cmdline:1;
146 unsigned int known:1; 135 unsigned int known:1;
147} osi_linux = { OSI_LINUX_ENABLE, 0, 0, 0}; 136} osi_linux = { 0, 0, 0, 0};
148 137
149static void __init acpi_request_region (struct acpi_generic_address *addr, 138static void __init acpi_request_region (struct acpi_generic_address *addr,
150 unsigned int length, char *desc) 139 unsigned int length, char *desc)
@@ -1296,34 +1285,6 @@ acpi_status acpi_os_release_object(acpi_cache_t * cache, void *object)
1296 return (AE_OK); 1285 return (AE_OK);
1297} 1286}
1298 1287
1299/**
1300 * acpi_dmi_dump - dump DMI slots needed for blacklist entry
1301 *
1302 * Returns 0 on success
1303 */
1304static int acpi_dmi_dump(void)
1305{
1306
1307 if (!dmi_available)
1308 return -1;
1309
1310 printk(KERN_NOTICE PREFIX "DMI System Vendor: %s\n",
1311 dmi_get_system_info(DMI_SYS_VENDOR));
1312 printk(KERN_NOTICE PREFIX "DMI Product Name: %s\n",
1313 dmi_get_system_info(DMI_PRODUCT_NAME));
1314 printk(KERN_NOTICE PREFIX "DMI Product Version: %s\n",
1315 dmi_get_system_info(DMI_PRODUCT_VERSION));
1316 printk(KERN_NOTICE PREFIX "DMI Board Name: %s\n",
1317 dmi_get_system_info(DMI_BOARD_NAME));
1318 printk(KERN_NOTICE PREFIX "DMI BIOS Vendor: %s\n",
1319 dmi_get_system_info(DMI_BIOS_VENDOR));
1320 printk(KERN_NOTICE PREFIX "DMI BIOS Date: %s\n",
1321 dmi_get_system_info(DMI_BIOS_DATE));
1322
1323 return 0;
1324}
1325
1326
1327/****************************************************************************** 1288/******************************************************************************
1328 * 1289 *
1329 * FUNCTION: acpi_os_validate_interface 1290 * FUNCTION: acpi_os_validate_interface
@@ -1350,21 +1311,6 @@ acpi_os_validate_interface (char *interface)
1350 osi_linux.cmdline ? " via cmdline" : 1311 osi_linux.cmdline ? " via cmdline" :
1351 osi_linux.dmi ? " via DMI" : ""); 1312 osi_linux.dmi ? " via DMI" : "");
1352 1313
1353 if (!osi_linux.dmi) {
1354 if (acpi_dmi_dump())
1355 printk(KERN_NOTICE PREFIX
1356 "[please extract dmidecode output]\n");
1357 printk(KERN_NOTICE PREFIX
1358 "Please send DMI info above to "
1359 "linux-acpi@vger.kernel.org\n");
1360 }
1361 if (!osi_linux.known && !osi_linux.cmdline) {
1362 printk(KERN_NOTICE PREFIX
1363 "If \"acpi_osi=%sLinux\" works better, "
1364 "please notify linux-acpi@vger.kernel.org\n",
1365 osi_linux.enable ? "!" : "");
1366 }
1367
1368 if (osi_linux.enable) 1314 if (osi_linux.enable)
1369 return AE_OK; 1315 return AE_OK;
1370 } 1316 }
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-20 05:23:20 -0500