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Add patch to enable keyboard backlight on Sony laptops (rhbz 728478)

This commit is contained in:
Josh Boyer 2012-02-28 15:42:00 -05:00
parent 18bb3c2c93
commit 5f05fc562a
2 changed files with 54 additions and 1 deletions
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11
kernel.spec
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@ -54,7 +54,7 @@ Summary: The Linux kernel
# For non-released -rc kernels, this will be appended after the rcX and
# gitX tags, so a 3 here would become part of release "0.rcX.gitX.3"
#
%global baserelease 1
%global baserelease 2
%global fedora_build %{baserelease}
# base_sublevel is the kernel version we're starting with and patching
@ -777,6 +777,9 @@ Patch21300: ACPICA-Fix-regression-in-FADT-revision-checks.patch
#rhbz 798296
Patch21301: cifs-fix-dentry-refcount-leak-when-opening-a-FIFO.patch
#rhbz 728478
Patch21302: sony-laptop-Enable-keyboard-backlight-by-default.patch
# compat-wireless patches
Patch50000: compat-wireless-config-fixups.patch
Patch50001: compat-wireless-pr_fmt-warning-avoidance.patch
@ -1499,6 +1502,9 @@ ApplyPatch ACPICA-Fix-regression-in-FADT-revision-checks.patch
#rhbz 798296
ApplyPatch cifs-fix-dentry-refcount-leak-when-opening-a-FIFO.patch
#rhbz 728478
ApplyPatch sony-laptop-Enable-keyboard-backlight-by-default.patch
# END OF PATCH APPLICATIONS
%endif
@ -2370,6 +2376,9 @@ fi
# ||----w |
# || ||
%changelog
* Tue Feb 28 2012 Josh Boyer <jwboyer@redhat.com>
- Add patch to enable keyboard backlight on Sony laptops (rhbz 728478)
* Tue Feb 28 2012 Dave Jones <davej@redhat.com>
- Disable CONFIG_USB_DEVICEFS (Deprecated).

44
sony-laptop-Enable-keyboard-backlight-by-default.patch Normal file
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@ -0,0 +1,44 @@
From 0dbc2bc96b1ec741bdd43451c286ccd45da3310b Mon Sep 17 00:00:00 2001
From: Josh Boyer <jwboyer@redhat.com>
Date: Wed, 2 Nov 2011 14:31:59 -0400
Subject: [PATCH] sony-laptop: Enable keyboard backlight by default
When the keyboard backlight support was originally added, the commit said
to default it to on with a 10 second timeout. That actually wasn't the
case, as the default value is commented out for the kbd_backlight parameter.
Because it is a static variable, it gets set to 0 by default without some
other form of initialization.
However, it seems the function to set the value wasn't actually called
immediately, so whatever state the keyboard was in initially would remain.
Then commit df410d522410e67660 was introduced during the 2.6.39 timeframe to
immediately set whatever value was present (as well as attempt to
restore/reset the state on module removal or resume). That seems to have
now forced the light off immediately when the module is loaded unless
the option kbd_backlight=1 is specified.
Let's enable it by default again (for the first time). This should solve
https://bugzilla.redhat.com/show_bug.cgi?id=728478
Acked-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Josh Boyer <jwboyer@redhat.com>
---
drivers/platform/x86/sony-laptop.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index c006dee..40c4705 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -127,7 +127,7 @@ MODULE_PARM_DESC(minor,
"default is -1 (automatic)");
#endif
-static int kbd_backlight; /* = 1 */
+static int kbd_backlight = 1;
module_param(kbd_backlight, int, 0444);
MODULE_PARM_DESC(kbd_backlight,
"set this to 0 to disable keyboard backlight, "
--
1.7.7.6