diff options
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1068-fix-pcf50633-LOWBAT-kill-init.patch.patch')
| -rw-r--r-- | target/linux/s3c24xx/patches-2.6.24/1068-fix-pcf50633-LOWBAT-kill-init.patch.patch | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1068-fix-pcf50633-LOWBAT-kill-init.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1068-fix-pcf50633-LOWBAT-kill-init.patch.patch deleted file mode 100644 index 2bbc782900..0000000000 --- a/target/linux/s3c24xx/patches-2.6.24/1068-fix-pcf50633-LOWBAT-kill-init.patch.patch +++ /dev/null @@ -1,86 +0,0 @@ -From 5a95dab616822e33d6526965b46eae98717537ea Mon Sep 17 00:00:00 2001 -From: mokopatches <mokopatches@openmoko.org> -Date: Sun, 13 Apr 2008 07:23:58 +0100 -Subject: [PATCH] fix-pcf50633-LOWBAT-kill-init.patch - ---- - drivers/i2c/chips/pcf50633.c | 56 ++++++++++++++++++++++++++++++++++++----- - 1 files changed, 49 insertions(+), 7 deletions(-) - -diff --git a/drivers/i2c/chips/pcf50633.c b/drivers/i2c/chips/pcf50633.c -index 0cf5e53..fc1262e 100644 ---- a/drivers/i2c/chips/pcf50633.c -+++ b/drivers/i2c/chips/pcf50633.c -@@ -690,8 +690,20 @@ static void pcf50633_work(struct work_struct *work) - if (pcf->onkey_seconds >= - pcf->pdata->onkey_seconds_sig_init) { - /* 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)) { -+ DEBUGPC("SIGINT(init) "); -+ kill_proc(1, SIGINT, 1); -+ } - /* FIXME: what if userspace doesn't shut down? */ - } - if (pcf->onkey_seconds >= -@@ -790,11 +802,41 @@ static void pcf50633_work(struct work_struct *work) - } - - if (pcfirq[3] & (PCF50633_INT4_LOWBAT|PCF50633_INT4_LOWSYS)) { -- /* 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, PCF50633_REG_MBCS1) & -+ (PCF50633_MBCS1_USBPRES | PCF50633_MBCS1_USBOK)) == -+ (PCF50633_MBCS1_USBPRES | PCF50633_MBCS1_USBOK)) { -+ /* -+ * 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, PCF50633_REG_OOCSHDWN, - PCF50633_OOCSHDWN_TOTRST, --- -1.5.6.5 - |