2009-09-30 15:11:31

by Ilkka Koskinen

[permalink] [raw]
Subject: [PATCH 1/2] twl4030: Do not dereference null pointer in error path

Signed-off-by: Ilkka Koskinen <[email protected]>
---
drivers/mfd/twl4030-core.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/mfd/twl4030-core.c b/drivers/mfd/twl4030-core.c
index e424cf6..8cf0a02 100644
--- a/drivers/mfd/twl4030-core.c
+++ b/drivers/mfd/twl4030-core.c
@@ -792,7 +792,7 @@ twl4030_probe(struct i2c_client *client, const struct i2c_device_id *id)
twl->client = i2c_new_dummy(client->adapter,
twl->address);
if (!twl->client) {
- dev_err(&twl->client->dev,
+ dev_err(&client->dev,
"can't attach client %d\n", i);
status = -ENOMEM;
goto fail;
--
1.6.0.4


2009-09-30 15:11:34

by Ilkka Koskinen

[permalink] [raw]
Subject: [PATCH 2/2] twl4030: Enable low-power mode to 32KHz oscillator

Allows TWL's 32KHz oscillator to go in low-power mode when
main battery voltage is running low.

Signed-off-by: Ilkka Koskinen <[email protected]>
---
drivers/mfd/twl4030-core.c | 9 +++++++--
include/linux/i2c/twl4030.h | 5 +++++
2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/twl4030-core.c b/drivers/mfd/twl4030-core.c
index 8cf0a02..5596bb4 100644
--- a/drivers/mfd/twl4030-core.c
+++ b/drivers/mfd/twl4030-core.c
@@ -177,6 +177,7 @@
#define HFCLK_FREQ_26_MHZ (2 << 0)
#define HFCLK_FREQ_38p4_MHZ (3 << 0)
#define HIGH_PERF_SQ (1 << 3)
+#define CK32K_LOWPWR_EN (1 << 7)


/* chip-specific feature flags, for i2c_device_id.driver_data */
@@ -678,7 +679,8 @@ static inline int __init unprotect_pm_master(void)
return e;
}

-static void clocks_init(struct device *dev)
+static void clocks_init(struct device *dev,
+ struct twl4030_clock_init_data *clock)
{
int e = 0;
struct clk *osc;
@@ -725,6 +727,9 @@ static void clocks_init(struct device *dev)
}

ctrl |= HIGH_PERF_SQ;
+ if (clock && clock->ck32k_lowpwr_enable)
+ ctrl |= CK32K_LOWPWR_EN;
+
e |= unprotect_pm_master();
/* effect->MADC+USB ck en */
e |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
@@ -805,7 +810,7 @@ twl4030_probe(struct i2c_client *client, const struct i2c_device_id *id)
inuse = true;

/* setup clock framework */
- clocks_init(&client->dev);
+ clocks_init(&client->dev, pdata->clock);

/* load power event scripts */
if (twl_has_power() && pdata->power)
diff --git a/include/linux/i2c/twl4030.h b/include/linux/i2c/twl4030.h
index 2d02dfd..612d0b7 100644
--- a/include/linux/i2c/twl4030.h
+++ b/include/linux/i2c/twl4030.h
@@ -312,6 +312,10 @@ int twl4030_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);

/*----------------------------------------------------------------------*/

+struct twl4030_clock_init_data {
+ int ck32k_lowpwr_enable;
+};
+
struct twl4030_bci_platform_data {
int *battery_tmp_tbl;
unsigned int tblsize;
@@ -403,6 +407,7 @@ extern void twl4030_power_init(struct twl4030_power_data *triton2_scripts);

struct twl4030_platform_data {
unsigned irq_base, irq_end;
+ struct twl4030_clock_init_data *clock;
struct twl4030_bci_platform_data *bci;
struct twl4030_gpio_platform_data *gpio;
struct twl4030_madc_platform_data *madc;
--
1.6.0.4

2009-10-16 14:23:21

by Ilkka Koskinen

[permalink] [raw]
Subject: RE: [PATCH 1/2] twl4030: Do not dereference null pointer in error path


Hi Samuel,

What is the status of this patch and the other one:
[PATCH 2/2] twl4030: Enable low-power mode to 32KHz oscillator

Cheers, Ilkka

>-----Original Message-----
>From: Koskinen Ilkka (Nokia-D/Tampere)
>Sent: 30 September, 2009 18:12
>To: [email protected]; [email protected]
>Cc: [email protected]; Koskinen Ilkka (Nokia-D/Tampere)
>Subject: [PATCH 1/2] twl4030: Do not dereference null pointer
>in error path
>
>Signed-off-by: Ilkka Koskinen <[email protected]>
>---
> drivers/mfd/twl4030-core.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
>diff --git a/drivers/mfd/twl4030-core.c b/drivers/mfd/twl4030-core.c
>index e424cf6..8cf0a02 100644
>--- a/drivers/mfd/twl4030-core.c
>+++ b/drivers/mfd/twl4030-core.c
>@@ -792,7 +792,7 @@ twl4030_probe(struct i2c_client *client,
>const struct i2c_device_id *id)
> twl->client = i2c_new_dummy(client->adapter,
> twl->address);
> if (!twl->client) {
>- dev_err(&twl->client->dev,
>+ dev_err(&client->dev,
> "can't attach client %d\n", i);
> status = -ENOMEM;
> goto fail;
>--
>1.6.0.4
>
>-

2009-10-19 15:50:51

by Samuel Ortiz

[permalink] [raw]
Subject: Re: [PATCH 1/2] twl4030: Do not dereference null pointer in error path

Hi Ilkka,

On Fri, Oct 16, 2009 at 04:21:41PM +0200, [email protected] wrote:
>
> Hi Samuel,
>
> What is the status of this patch and the other one:
> [PATCH 2/2] twl4030: Enable low-power mode to 32KHz oscillator
I'm sorry but it seems I havent received those 2 patches. Could you please
re-send them ?

Cheers,
Samuel.


> Cheers, Ilkka
>
> >-----Original Message-----
> >From: Koskinen Ilkka (Nokia-D/Tampere)
> >Sent: 30 September, 2009 18:12
> >To: [email protected]; [email protected]
> >Cc: [email protected]; Koskinen Ilkka (Nokia-D/Tampere)
> >Subject: [PATCH 1/2] twl4030: Do not dereference null pointer
> >in error path
> >
> >Signed-off-by: Ilkka Koskinen <[email protected]>
> >---
> > drivers/mfd/twl4030-core.c | 2 +-
> > 1 files changed, 1 insertions(+), 1 deletions(-)
> >
> >diff --git a/drivers/mfd/twl4030-core.c b/drivers/mfd/twl4030-core.c
> >index e424cf6..8cf0a02 100644
> >--- a/drivers/mfd/twl4030-core.c
> >+++ b/drivers/mfd/twl4030-core.c
> >@@ -792,7 +792,7 @@ twl4030_probe(struct i2c_client *client,
> >const struct i2c_device_id *id)
> > twl->client = i2c_new_dummy(client->adapter,
> > twl->address);
> > if (!twl->client) {
> >- dev_err(&twl->client->dev,
> >+ dev_err(&client->dev,
> > "can't attach client %d\n", i);
> > status = -ENOMEM;
> > goto fail;
> >--
> >1.6.0.4
> >
> >

--
Intel Open Source Technology Centre
http://oss.intel.com/

2009-10-20 13:19:43

by Ilkka Koskinen

[permalink] [raw]
Subject: RE: [PATCH 1/2] twl4030: Do not dereference null pointer in error path


Hi Samuel,

>From: ext Samuel Ortiz [mailto:[email protected]]
>Sent: 19 October, 2009 18:53
>On Fri, Oct 16, 2009 at 04:21:41PM +0200,
>[email protected] wrote:
>>
>> Hi Samuel,
>>
>> What is the status of this patch and the other one:
>> [PATCH 2/2] twl4030: Enable low-power mode to 32KHz oscillator
>I'm sorry but it seems I havent received those 2 patches.
>Could you please
>re-send them ?

Sorry, my mistake. I already forgot that the patches never
reached you. I'll resend them right away.

Cheers, Ilkka

>> >-----Original Message-----
>> >From: Koskinen Ilkka (Nokia-D/Tampere)
>> >Sent: 30 September, 2009 18:12
>> >To: [email protected]; [email protected]
>> >Cc: [email protected]; Koskinen Ilkka (Nokia-D/Tampere)
>> >Subject: [PATCH 1/2] twl4030: Do not dereference null pointer
>> >in error path
>> >
>> >Signed-off-by: Ilkka Koskinen <[email protected]>
>> >---
>> > drivers/mfd/twl4030-core.c | 2 +-
>> > 1 files changed, 1 insertions(+), 1 deletions(-)
>> >
>> >diff --git a/drivers/mfd/twl4030-core.c b/drivers/mfd/twl4030-core.c
>> >index e424cf6..8cf0a02 100644
>> >--- a/drivers/mfd/twl4030-core.c
>> >+++ b/drivers/mfd/twl4030-core.c
>> >@@ -792,7 +792,7 @@ twl4030_probe(struct i2c_client *client,
>> >const struct i2c_device_id *id)
>> > twl->client = i2c_new_dummy(client->adapter,
>> > twl->address);
>> > if (!twl->client) {
>> >- dev_err(&twl->client->dev,
>> >+ dev_err(&client->dev,
>> > "can't attach client %d\n", i);
>> > status = -ENOMEM;
>> > goto fail;
>> >--
>> >1.6.0.4
>> >
>> >
>
>--
>Intel Open Source Technology Centre
>http://oss.intel.com/
>-