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Date: Wed, 14 Apr 2010 14:36:33 -0700
From: Joe Perches <joe@...ches.com>
To: Alan Cox <alan@...rguk.ukuu.org.uk>,
Kalhan Trisal <kalhan.trisal@...el.com>
Cc: Jonathan Cameron <kernel@...23.retrosnub.co.uk>,
linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] hmc6352: Add driver for the HMC6352 compass
Trivial neatening
Argument alignment
Spacing
Make chars static
Remove prefixes from dev_<level> logging
Signed-off-by: Joe Perches <joe@...ches.com>
---
drivers/misc/hmc6352.c | 44 ++++++++++++++++++++++----------------------
1 files changed, 22 insertions(+), 22 deletions(-)
diff --git a/drivers/misc/hmc6352.c b/drivers/misc/hmc6352.c
index 1c1e974..2c12dc3 100644
--- a/drivers/misc/hmc6352.c
+++ b/drivers/misc/hmc6352.c
@@ -30,13 +30,14 @@
#include <linux/sysfs.h>
static ssize_t compass_calibration_store(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t count)
+ struct device_attribute *attr,
+ const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
int ret;
unsigned long val;
- char cmd = 'C'; /* Calibrate */
- char cmd1 = 'E'; /* Exit calibration mode */
+ static char cmd = 'C'; /* Calibrate */
+ static char cmd1 = 'E'; /* Exit calibration mode */
struct i2c_msg msg[] = {
{ client->addr, 0, 1, &cmd },
};
@@ -49,13 +50,13 @@ static ssize_t compass_calibration_store(struct device *dev,
if (val == 1) {
ret = i2c_transfer(client->adapter, msg, 1);
if (ret != 1) {
- dev_warn(dev, "hmc6352_comp: i2c calib start cmd failed\n");
+ dev_warn(dev, "i2c calib start cmd failed\n");
return ret;
}
} else if (val == 2) {
ret = i2c_transfer(client->adapter, msg1, 1);
if (ret != 1) {
- dev_warn(dev, "hmc6352_comp: i2c calib stop cmd failed\n");
+ dev_warn(dev, "i2c calib stop cmd failed\n");
return ret;
}
} else
@@ -65,9 +66,9 @@ static ssize_t compass_calibration_store(struct device *dev,
}
static ssize_t compass_heading_data_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+ struct device_attribute *attr,
+ char *buf)
{
-
struct i2c_client *client = to_i2c_client(dev);
static char cmd = 'A'; /* Get Data */
unsigned char i2c_data[2];
@@ -81,22 +82,22 @@ static ssize_t compass_heading_data_show(struct device *dev,
ret = i2c_transfer(client->adapter, msg, 1);
if (ret != 1) {
- dev_warn(dev, "hmc6352: i2c cmd 0x41 failed\n");
+ dev_warn(dev, "i2c cmd 0x41 failed\n");
return ret;
}
- msleep(10); /* sending 0x41 cmd we need to wait for 7-10 milli second*/
+ msleep(10); /* sending 0x41 cmd we need to wait for 7-10 milliseconds */
ret = i2c_transfer(client->adapter, msg1, 1);
if (ret != 1) {
- dev_warn(dev, "hmc6352: i2c read data cmd failed\n");
+ dev_warn(dev, "i2c read data cmd failed\n");
return ret;
}
- ret_val = i2c_data[0];
- ret_val = ((ret_val << 8) | i2c_data[1]);
+ ret_val = ((unsigned int)i2c_data[0] << 8) | i2c_data[1];
return sprintf(buf, "%d.%d\n", ret_val/10, ret_val%10);
}
static ssize_t compass_power_mode_store(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t count)
+ struct device_attribute *attr,
+ const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
@@ -117,11 +118,11 @@ static ssize_t compass_power_mode_store(struct device *dev,
if (val == 0) {
ret = i2c_transfer(client->adapter, msg, 1);
if (ret != 1)
- dev_warn(dev, "hmc6352: i2c cmd sleep mode failed\n");
+ dev_warn(dev, "i2c cmd sleep mode failed\n");
} else if (val == 1) {
ret = i2c_transfer(client->adapter, msg1, 1);
if (ret != 1)
- dev_warn(dev, "hmc6352: i2c cmd active mode failed\n");
+ dev_warn(dev, "i2c cmd active mode failed\n");
} else
return -EINVAL;
@@ -144,18 +145,17 @@ static struct attribute_group m_compass_gr = {
.attrs = mid_att_compass
};
-static int hmc6352_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int hmc6352_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
{
int res;
res = sysfs_create_group(&client->dev.kobj, &m_compass_gr);
if (res) {
- dev_err(&client->dev, "hmc6352: device_create_file failed\n");
+ dev_err(&client->dev, "sysfs_create_group failed\n");
return res;
}
- dev_info(&client->dev, "%s HMC6352 compass chip found\n",
- client->name);
+ dev_info(&client->dev, "%s HMC6352 compass chip found\n", client->name);
return 0;
}
@@ -174,7 +174,7 @@ MODULE_DEVICE_TABLE(i2c, hmc6352_id);
static struct i2c_driver hmc6352_driver = {
.driver = {
- .name = "hmc6352",
+ .name = "hmc6352",
},
.probe = hmc6352_probe,
.remove = hmc6352_remove,
@@ -186,7 +186,7 @@ static int __init sensor_hmc6352_init(void)
return i2c_add_driver(&hmc6352_driver);
}
-static void __exit sensor_hmc6352_exit(void)
+static void __exit sensor_hmc6352_exit(void)
{
i2c_del_driver(&hmc6352_driver);
}
--
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