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systemd/0005-backlight-handle-saved-brightness-exceeding-max-brig.patch
Stephan Kulow 88094f2bbb Accepting request 233680 from Base:System
- Add patch log-target-null-instead-kmsg.patch from Thomas Blume
  to enable the kernel developers to see a clean kmsg ring buffer
  without any systemd/udev messages included (bnc#877021)

- Add upstram patches for backlight
  0001-backlight-Avoid-restoring-brightness-to-an-unreadabl.patch
  0002-backlight-do-nothing-if-max_brightness-is-0.patch
  0003-backlight-unify-error-messages.patch
  0004-backlight-warn-if-kernel-exposes-backlight-device-wi.patch
  0005-backlight-handle-saved-brightness-exceeding-max-brig.patch

- Add upstream patches
  0001-errno-make-sure-to-handle-the-3-errnos-that-are-alia.patch
  0002-udev-warn-when-name_to_handle_at-is-not-implemented.patch
  0003-analyze-fix-plot-with-bad-y-size.patch
  0004-job-add-waiting-jobs-to-run-queue-in-unit_coldplug.patch
  0005-job-always-add-waiting-jobs-to-run-queue-during-cold.patch

- Drop upstream-net_id-changes.patch and replace them with the correct
  patches from upstream and their commits:
  add: 1014-udev-update-net_id-comments.patch 
  add: 1015-udev-persistent-naming-we-cannot-use-virtio-numbers-.patch

- Add patch log-target-null-instead-kmsg.patch from Thomas Blume
  to enable the kernel developers to see a clean kmsg ring buffer
  without any systemd/udev messages included (bnc#877021)

- Add upstram patches for backlight
  0001-backlight-Avoid-restoring-brightness-to-an-unreadabl.patch
  0002-backlight-do-nothing-if-max_brightness-is-0.patch

OBS-URL: https://build.opensuse.org/request/show/233680
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/systemd?expand=0&rev=186
2014-05-13 18:46:20 +00:00

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2.4 KiB
Diff

From 0c9d8f1d4b5018199cb5a9b57580dc1480a7f915 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Wed, 7 May 2014 12:01:01 +0300
Subject: [PATCH] backlight: handle saved brightness exceeding max brightness
If too high a brightness value has been saved (e.g. due to kernel
mechanism changing from one kernel version to another, or booting the
userspace on another system), the brightness update fails and the
process exits.
Clamp saved brightness between the policy minimum introduced in
commit 7b909d7407965c03caaba30daae7aee113627a83
Author: Josh Triplett <josh@joshtriplett.org>
Date: Tue Mar 11 21:16:33 2014 -0700
backlight: Avoid restoring brightness to an unreadably dim level
and the absolute maximum.
https://bugs.freedesktop.org/show_bug.cgi?id=78200
---
src/backlight/backlight.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git src/backlight/backlight.c src/backlight/backlight.c
index c708391..691472c 100644
--- src/backlight/backlight.c
+++ src/backlight/backlight.c
@@ -229,7 +229,7 @@ static unsigned get_max_brightness(struct udev_device *device) {
* would otherwise force the user to disable state restoration. */
static void clamp_brightness(struct udev_device *device, char **value, unsigned max_brightness) {
int r;
- unsigned brightness, new_brightness;
+ unsigned brightness, new_brightness, min_brightness;
r = safe_atou(*value, &brightness);
if (r < 0) {
@@ -237,7 +237,8 @@ static void clamp_brightness(struct udev_device *device, char **value, unsigned
return;
}
- new_brightness = MAX3(brightness, 1U, max_brightness/20);
+ min_brightness = MAX(1U, max_brightness/20);
+ new_brightness = CLAMP(brightness, min_brightness, max_brightness);
if (new_brightness != brightness) {
char *old_value = *value;
@@ -247,7 +248,11 @@ static void clamp_brightness(struct udev_device *device, char **value, unsigned
return;
}
- log_debug("Saved brightness %s too low; increasing to %s.", old_value, *value);
+ log_info("Saved brightness %s %s to %s.", old_value,
+ new_brightness > brightness ?
+ "too low; increasing" : "too high; decreasing",
+ *value);
+
free(old_value);
}
}
--
1.7.9.2