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authorLinus Torvalds <torvalds@linux-foundation.org>2011-08-13 18:37:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-08-13 18:37:28 -0700
commit91d85ea6786107aa2837bef3e957165ad7c8b823 (patch)
treec6100fd49a1c3d961998c3c89e706de4ceafb97e
parent17987783e51555da22890feb715a0c84d4ed36aa (diff)
parent66a89b2164e2d30661edbd1953eacf0594d8203a (diff)
Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging: hwmon: (ibmaem) add missing kfree hwmon: (pmbus/lm25066) Ignore byte writes to non-zero pages hwmon: (pmbus) Virtualize pmbus_write_byte
-rw-r--r--drivers/hwmon/ibmaem.c15
-rw-r--r--drivers/hwmon/pmbus/lm25066.c12
-rw-r--r--drivers/hwmon/pmbus/pmbus.h1
-rw-r--r--drivers/hwmon/pmbus/pmbus_core.c20
4 files changed, 42 insertions, 6 deletions
diff --git a/drivers/hwmon/ibmaem.c b/drivers/hwmon/ibmaem.c
index 1a409c5bc9b..c316294c48b 100644
--- a/drivers/hwmon/ibmaem.c
+++ b/drivers/hwmon/ibmaem.c
@@ -432,13 +432,15 @@ static int aem_read_sensor(struct aem_data *data, u8 elt, u8 reg,
aem_send_message(ipmi);
res = wait_for_completion_timeout(&ipmi->read_complete, IPMI_TIMEOUT);
- if (!res)
- return -ETIMEDOUT;
+ if (!res) {
+ res = -ETIMEDOUT;
+ goto out;
+ }
if (ipmi->rx_result || ipmi->rx_msg_len != rs_size ||
memcmp(&rs_resp->id, &system_x_id, sizeof(system_x_id))) {
- kfree(rs_resp);
- return -ENOENT;
+ res = -ENOENT;
+ goto out;
}
switch (size) {
@@ -463,8 +465,11 @@ static int aem_read_sensor(struct aem_data *data, u8 elt, u8 reg,
break;
}
}
+ res = 0;
- return 0;
+out:
+ kfree(rs_resp);
+ return res;
}
/* Update AEM energy registers */
diff --git a/drivers/hwmon/pmbus/lm25066.c b/drivers/hwmon/pmbus/lm25066.c
index d4bc114572d..ac254fba551 100644
--- a/drivers/hwmon/pmbus/lm25066.c
+++ b/drivers/hwmon/pmbus/lm25066.c
@@ -161,6 +161,17 @@ static int lm25066_write_word_data(struct i2c_client *client, int page, int reg,
return ret;
}
+static int lm25066_write_byte(struct i2c_client *client, int page, u8 value)
+{
+ if (page > 1)
+ return -EINVAL;
+
+ if (page == 0)
+ return pmbus_write_byte(client, 0, value);
+
+ return 0;
+}
+
static int lm25066_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -204,6 +215,7 @@ static int lm25066_probe(struct i2c_client *client,
info->read_word_data = lm25066_read_word_data;
info->write_word_data = lm25066_write_word_data;
+ info->write_byte = lm25066_write_byte;
switch (id->driver_data) {
case lm25066:
diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h
index 0808d986d75..a6ae20ffef6 100644
--- a/drivers/hwmon/pmbus/pmbus.h
+++ b/drivers/hwmon/pmbus/pmbus.h
@@ -325,6 +325,7 @@ struct pmbus_driver_info {
int (*read_word_data)(struct i2c_client *client, int page, int reg);
int (*write_word_data)(struct i2c_client *client, int page, int reg,
u16 word);
+ int (*write_byte)(struct i2c_client *client, int page, u8 value);
/*
* The identify function determines supported PMBus functionality.
* This function is only necessary if a chip driver supports multiple
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index 5c1b6cf3170..a561c3a0e91 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -182,6 +182,24 @@ int pmbus_write_byte(struct i2c_client *client, int page, u8 value)
}
EXPORT_SYMBOL_GPL(pmbus_write_byte);
+/*
+ * _pmbus_write_byte() is similar to pmbus_write_byte(), but checks if
+ * a device specific mapping funcion exists and calls it if necessary.
+ */
+static int _pmbus_write_byte(struct i2c_client *client, int page, u8 value)
+{
+ struct pmbus_data *data = i2c_get_clientdata(client);
+ const struct pmbus_driver_info *info = data->info;
+ int status;
+
+ if (info->write_byte) {
+ status = info->write_byte(client, page, value);
+ if (status != -ENODATA)
+ return status;
+ }
+ return pmbus_write_byte(client, page, value);
+}
+
int pmbus_write_word_data(struct i2c_client *client, u8 page, u8 reg, u16 word)
{
int rv;
@@ -281,7 +299,7 @@ static int _pmbus_read_byte_data(struct i2c_client *client, int page, int reg)
static void pmbus_clear_fault_page(struct i2c_client *client, int page)
{
- pmbus_write_byte(client, page, PMBUS_CLEAR_FAULTS);
+ _pmbus_write_byte(client, page, PMBUS_CLEAR_FAULTS);
}
void pmbus_clear_faults(struct i2c_client *client)