61 lines
2.2 KiB
Diff
61 lines
2.2 KiB
Diff
From: Matthew Garrett <mjg@redhat.com>
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Date: Mon May 17 20:38:21 2010 UTC
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Subject: Fix backlight support on some recent Thinkpads
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diff -up linux-2.6.34.noarch/drivers/platform/x86/thinkpad_acpi.c.orig linux-2.6.34.noarch/drivers/platform/x86/thinkpad_acpi.c
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--- linux-2.6.34.noarch/drivers/platform/x86/thinkpad_acpi.c.orig 2010-05-17 16:28:13.254200070 -0400
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+++ linux-2.6.34.noarch/drivers/platform/x86/thinkpad_acpi.c 2010-05-17 16:29:56.471200083 -0400
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@@ -3397,7 +3397,7 @@ static int __init hotkey_init(struct ibm
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/* update bright_acpimode... */
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tpacpi_check_std_acpi_brightness_support();
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- if (tp_features.bright_acpimode && acpi_video_backlight_support()) {
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+ if (acpi_video_backlight_support()) {
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printk(TPACPI_INFO
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"This ThinkPad has standard ACPI backlight "
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"brightness control, supported by the ACPI "
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@@ -6189,26 +6189,24 @@ static int __init brightness_init(struct
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* going to publish a backlight interface
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*/
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b = tpacpi_check_std_acpi_brightness_support();
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- if (b > 0) {
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- if (acpi_video_backlight_support()) {
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- if (brightness_enable > 1) {
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- printk(TPACPI_NOTICE
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- "Standard ACPI backlight interface "
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- "available, not loading native one.\n");
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- return 1;
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- } else if (brightness_enable == 1) {
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- printk(TPACPI_NOTICE
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- "Backlight control force enabled, even if standard "
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- "ACPI backlight interface is available\n");
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- }
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- } else {
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- if (brightness_enable > 1) {
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- printk(TPACPI_NOTICE
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- "Standard ACPI backlight interface not "
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- "available, thinkpad_acpi native "
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- "brightness control enabled\n");
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- }
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+ if (acpi_video_backlight_support()) {
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+ if (brightness_enable > 1) {
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+ printk(TPACPI_NOTICE
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+ "Standard ACPI backlight interface "
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+ "available, not loading native one.\n");
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+ return 1;
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+ } else if (brightness_enable == 1) {
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+ printk(TPACPI_NOTICE
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+ "Backlight control force enabled, even if standard "
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+ "ACPI backlight interface is available\n");
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+ }
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+ } else {
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+ if (brightness_enable > 1) {
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+ printk(TPACPI_NOTICE
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+ "Standard ACPI backlight interface not "
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+ "available, thinkpad_acpi native "
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+ "brightness control enabled\n");
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}
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}
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