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From 0dbc2bc96b1ec741bdd43451c286ccd45da3310b Mon Sep 17 00:00:00 2001
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From: Josh Boyer <jwboyer@redhat.com>
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Date: Wed, 2 Nov 2011 14:31:59 -0400
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Subject: [PATCH] sony-laptop: Enable keyboard backlight by default
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When the keyboard backlight support was originally added, the commit said
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to default it to on with a 10 second timeout. That actually wasn't the
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case, as the default value is commented out for the kbd_backlight parameter.
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Because it is a static variable, it gets set to 0 by default without some
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other form of initialization.
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However, it seems the function to set the value wasn't actually called
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immediately, so whatever state the keyboard was in initially would remain.
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Then commit df410d522410e67660 was introduced during the 2.6.39 timeframe to
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immediately set whatever value was present (as well as attempt to
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restore/reset the state on module removal or resume). That seems to have
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now forced the light off immediately when the module is loaded unless
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the option kbd_backlight=1 is specified.
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Let's enable it by default again (for the first time). This should solve
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https://bugzilla.redhat.com/show_bug.cgi?id=728478
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Acked-by: Mattia Dongili <malattia@linux.it>
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Signed-off-by: Josh Boyer <jwboyer@redhat.com>
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---
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drivers/platform/x86/sony-laptop.c | 2 +-
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1 files changed, 1 insertions(+), 1 deletions(-)
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diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
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index c006dee..40c4705 100644
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--- a/drivers/platform/x86/sony-laptop.c
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+++ b/drivers/platform/x86/sony-laptop.c
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@@ -127,7 +127,7 @@ MODULE_PARM_DESC(minor,
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"default is -1 (automatic)");
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#endif
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-static int kbd_backlight; /* = 1 */
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+static int kbd_backlight = 1;
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module_param(kbd_backlight, int, 0444);
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MODULE_PARM_DESC(kbd_backlight,
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"set this to 0 to disable keyboard backlight, "
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--
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1.7.7.6
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