change prefix for kernelpatchbase 2.6.26

SVN-Revision: 13619

1 files changed, 83 insertions, 0 deletions

diff --git a/target/linux/s3c24xx/patches-2.6.26/1057-fix-pcf50606-LOWBAT-kill-init.patch.patch b/target/linux/s3c24xx/patches-2.6.26/1057-fix-pcf50606-LOWBAT-kill-init.patch.patch
new file mode 100755
index 0000000000..13945f56b7
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.26/1057-fix-pcf50606-LOWBAT-kill-init.patch.patch
@@ -0,0 +1,83 @@
+From 835002d2e751c0d35b744ceec5bef726b9778b7b Mon Sep 17 00:00:00 2001
+From: mokopatches <mokopatches@openmoko.org>
+Date: Fri, 25 Jul 2008 22:21:25 +0100
+Subject: [PATCH] fix-pcf50606-LOWBAT-kill-init.patch
+
+---
+ drivers/i2c/chips/pcf50606.c |   53 ++++++++++++++++++++++++++++++++++++-----
+ 1 files changed, 46 insertions(+), 7 deletions(-)
+
+diff --git a/drivers/i2c/chips/pcf50606.c b/drivers/i2c/chips/pcf50606.c
+index b530583..a1c92d3 100644
+--- a/drivers/i2c/chips/pcf50606.c
++++ b/drivers/i2c/chips/pcf50606.c
+@@ -654,8 +654,20 @@ static void pcf50606_work(struct work_struct *work)
+ 			if (pcf->onkey_seconds >=
+ 			    pcf->pdata->onkey_seconds_required) {
+ 				/* Ask init to do 'ctrlaltdel' */
+-				DEBUGPC("SIGINT(init) ");
+-				kill_proc(1, SIGINT, 1);
++				/*
++				 * currently Linux reacts badly to issuing a
++				 * signal to PID #1 before init is started.
++				 * What happens is that the next kernel thread
++				 * to start, which is the JFFS2 Garbage
++				 * collector in our case, gets the signal
++				 * instead and proceeds to fail to fork --
++				 * which is very bad.  Therefore we confirm
++				 * PID #1 exists before issuing the signal
++				 */
++				if (find_task_by_pid(1)) {
++					kill_proc(1, SIGINT, 1);
++					DEBUGPC("SIGINT(init) ");
++				}
+ 				/* FIXME: what to do if userspace doesn't
+ 				 * shut down? Do we want to force it? */
+ 			}
+@@ -749,11 +761,38 @@ static void pcf50606_work(struct work_struct *work)
+ 	}
+ 	/* FIXME: TSCPRES */
+ 	if (pcfirq[2] & PCF50606_INT3_LOWBAT) {
+-		/* Really low battery voltage, we have 8 seconds left */
+-		DEBUGPC("LOWBAT ");
+-		apm_queue_event(APM_LOW_BATTERY);
+-		DEBUGPC("SIGPWR(init) ");
+-		kill_proc(1, SIGPWR, 1);
++		if (__reg_read(pcf, PCF50606_REG_OOCS) & PCF50606_OOCS_EXTON) {
++			/*
++			 * hey no need to freak out, we have some kind of
++			 * valid charger power
++			 */
++			DEBUGPC("(NO)BAT ");
++		} else {
++			/* Really low battery voltage, we have 8 seconds left */
++			DEBUGPC("LOWBAT ");
++			/*
++			 * currently Linux reacts badly to issuing a signal to
++			 * PID #1 before init is started.  What happens is that
++			 * the next kernel thread to start, which is the JFFS2
++			 * Garbage collector in our case, gets the signal
++			 * instead and proceeds to fail to fork -- which is
++			 * very bad.  Therefore we confirm PID #1 exists
++			 * before issuing SPIGPWR
++			 */
++			if (find_task_by_pid(1)) {
++				apm_queue_event(APM_LOW_BATTERY);
++				DEBUGPC("SIGPWR(init) ");
++				kill_proc(1, SIGPWR, 1);
++			} else
++				/*
++				 * well, our situation is like this:  we do not
++				 * have any external power, we have a low
++				 * battery and since PID #1 doesn't exist yet,
++				 * we are early in the boot, likely before
++				 * rootfs mount.  We should just call it a day
++				 */
++				apm_queue_event(APM_CRITICAL_SUSPEND);
++		}
+ 		/* Tell PMU we are taking care of this */
+ 		reg_set_bit_mask(pcf, PCF50606_REG_OOCC1,
+ 				 PCF50606_OOCC1_TOTRST,
+-- 
+1.5.6.3
+