mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-25 10:04:36 +02:00
[xburst] ADC and battery fixes
* Fix concurrent battery readings * Add missing kfree in battery driver remove * Fix disabling of a ADC component git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23670 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
parent
8ac283815a
commit
2b87facd96
64
target/linux/xburst/patches-2.6.36/300-battery-fixes.patch
Normal file
64
target/linux/xburst/patches-2.6.36/300-battery-fixes.patch
Normal file
@ -0,0 +1,64 @@
|
|||||||
|
From 2d435d52c63e4dd544938bad638ecd518cc04d1c Mon Sep 17 00:00:00 2001
|
||||||
|
From: Lars-Peter Clausen <lars@metafoo.de>
|
||||||
|
Date: Tue, 26 Oct 2010 20:13:40 +0200
|
||||||
|
Subject: [PATCH] POWER: jz4740-battery: Protect against concurrent battery readings
|
||||||
|
|
||||||
|
We can not handle more then one ADC request at a time to the battery. The patch
|
||||||
|
adds a mutex around the ADC read code to ensure this.
|
||||||
|
|
||||||
|
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
|
||||||
|
|
||||||
|
jz4740-battery: Add missing kfree(jz_battery) in jz_battery_remove()
|
||||||
|
|
||||||
|
Signed-off-by: Axel Lin <axel.lin@gmail.com>
|
||||||
|
Acked-By: Lars-Peter Clausen <lars@metafoo.de>
|
||||||
|
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
|
||||||
|
---
|
||||||
|
drivers/power/jz4740-battery.c | 8 ++++++++
|
||||||
|
1 files changed, 8 insertions(+), 0 deletions(-)
|
||||||
|
|
||||||
|
--- a/drivers/power/jz4740-battery.c
|
||||||
|
+++ b/drivers/power/jz4740-battery.c
|
||||||
|
@@ -47,6 +47,8 @@ struct jz_battery {
|
||||||
|
|
||||||
|
struct power_supply battery;
|
||||||
|
struct delayed_work work;
|
||||||
|
+
|
||||||
|
+ struct mutex lock;
|
||||||
|
};
|
||||||
|
|
||||||
|
static inline struct jz_battery *psy_to_jz_battery(struct power_supply *psy)
|
||||||
|
@@ -68,6 +70,8 @@ static long jz_battery_read_voltage(stru
|
||||||
|
unsigned long val;
|
||||||
|
long voltage;
|
||||||
|
|
||||||
|
+ mutex_lock(&battery->lock);
|
||||||
|
+
|
||||||
|
INIT_COMPLETION(battery->read_completion);
|
||||||
|
|
||||||
|
enable_irq(battery->irq);
|
||||||
|
@@ -91,6 +95,8 @@ static long jz_battery_read_voltage(stru
|
||||||
|
battery->cell->disable(battery->pdev);
|
||||||
|
disable_irq(battery->irq);
|
||||||
|
|
||||||
|
+ mutex_unlock(&battery->lock);
|
||||||
|
+
|
||||||
|
return voltage;
|
||||||
|
}
|
||||||
|
|
||||||
|
@@ -291,6 +297,7 @@ static int __devinit jz_battery_probe(st
|
||||||
|
jz_battery->pdev = pdev;
|
||||||
|
|
||||||
|
init_completion(&jz_battery->read_completion);
|
||||||
|
+ mutex_init(&jz_battery->lock);
|
||||||
|
|
||||||
|
INIT_DELAYED_WORK(&jz_battery->work, jz_battery_work);
|
||||||
|
|
||||||
|
@@ -383,6 +390,7 @@ static int __devexit jz_battery_remove(s
|
||||||
|
|
||||||
|
iounmap(jz_battery->base);
|
||||||
|
release_mem_region(jz_battery->mem->start, resource_size(jz_battery->mem));
|
||||||
|
+ kfree(jz_battery);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
25
target/linux/xburst/patches-2.6.36/301-mfd-adc-fixes.patch
Normal file
25
target/linux/xburst/patches-2.6.36/301-mfd-adc-fixes.patch
Normal file
@ -0,0 +1,25 @@
|
|||||||
|
From 1abac8c26df9112efee5da078f163b1c32075037 Mon Sep 17 00:00:00 2001
|
||||||
|
From: Axel Lin <axel.lin@gmail.com>
|
||||||
|
Date: Thu, 7 Oct 2010 15:51:20 +0800
|
||||||
|
Subject: [PATCH] mfd: Fix jz4740_adc_set_enabled
|
||||||
|
|
||||||
|
When enabled is false, clear BIT(engine) of JZ_REG_ADC_ENABLE register.
|
||||||
|
|
||||||
|
Signed-off-by: Axel Lin <axel.lin@gmail.com>
|
||||||
|
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
|
||||||
|
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
|
||||||
|
---
|
||||||
|
drivers/mfd/jz4740-adc.c | 2 +-
|
||||||
|
1 files changed, 1 insertions(+), 1 deletions(-)
|
||||||
|
|
||||||
|
--- a/drivers/mfd/jz4740-adc.c
|
||||||
|
+++ b/drivers/mfd/jz4740-adc.c
|
||||||
|
@@ -154,7 +154,7 @@ static inline void jz4740_adc_set_enable
|
||||||
|
if (enabled)
|
||||||
|
val |= BIT(engine);
|
||||||
|
else
|
||||||
|
- val &= BIT(engine);
|
||||||
|
+ val &= ~BIT(engine);
|
||||||
|
writeb(val, adc->base + JZ_REG_ADC_ENABLE);
|
||||||
|
|
||||||
|
spin_unlock_irqrestore(&adc->lock, flags);
|
Loading…
Reference in New Issue
Block a user