drivers/acpi/osi.c

1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  osi.c - _OSI implementation
96 				osi->enable = false;  in acpi_osi_setup()
108 		if (!strcmp(osi->string, str)) {  in acpi_osi_setup()
109 			osi->enable = enable;  in acpi_osi_setup()
111 		} else if (osi->string[0] == '\0') {  in acpi_osi_setup()
112 			osi->enable = enable;  in acpi_osi_setup()
113 			strscpy(osi->string, str, OSI_STRING_LENGTH_MAX);  in acpi_osi_setup()
142  * From pre-history through Linux-2.6.22, Linux responded TRUE upon a BIOS
147  * ill-conceived and opening the door to an un-bounded number of BIOS
150  * For example, OSI(Linux) was used on resume to re-POST a video card on
153  * capability, Linux has no way to tell the BIOS to skip the time-consuming
154  * POST -- putting Linux at a permanent performance disadvantage. On
161  * Linux-2.6.23 onward we respond FALSE.
190  * otherwise string is added to list, augmenting built-in strings
210 		str = osi->string;  in acpi_osi_setup_late()
213 		if (osi->enable) {  in acpi_osi_setup_late()
258 	pr_notice("DMI detected to setup _OSI(\"Linux\"): %s\n", d->ident);  in acpi_osi_dmi_linux()
272 	pr_notice("DMI detected: %s\n", d->ident);  in dmi_disable_osi_vista()
282 	pr_notice("DMI detected: %s\n", d->ident);  in dmi_disable_osi_win7()
290 	pr_notice("DMI detected: %s\n", d->ident);  in dmi_disable_osi_win8()
297  * Linux default _OSI response behavior is determined by this DMI table.
299  * Note that _OSI("Linux")/_OSI("Darwin") determined here can be overridden
324 		     DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
330 	.ident = "Sony VGN-NS10J_S",
333 		     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
338 	.ident = "Sony VGN-SR290J",
341 		     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR290J"),
346 	.ident = "VGN-NS50B_L",
349 		     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS50B_L"),
354 	.ident = "VGN-SR19XN",
357 		     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-SR19XN"),