diff options
Diffstat (limited to 'target')
| -rw-r--r-- | target/linux/xburst/patches-2.6.36/300-battery-fixes.patch | 64 | ||||
| -rw-r--r-- | target/linux/xburst/patches-2.6.36/301-mfd-adc-fixes.patch | 25 |
2 files changed, 89 insertions, 0 deletions
diff --git a/target/linux/xburst/patches-2.6.36/300-battery-fixes.patch b/target/linux/xburst/patches-2.6.36/300-battery-fixes.patch new file mode 100644 index 000000000..1aadb6acb --- /dev/null +++ b/target/linux/xburst/patches-2.6.36/300-battery-fixes.patch @@ -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; + } diff --git a/target/linux/xburst/patches-2.6.36/301-mfd-adc-fixes.patch b/target/linux/xburst/patches-2.6.36/301-mfd-adc-fixes.patch new file mode 100644 index 000000000..173a0ee93 --- /dev/null +++ b/target/linux/xburst/patches-2.6.36/301-mfd-adc-fixes.patch @@ -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); |