aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/i2c/chips
diff options
context:
space:
mode:
authorJean Delvare <khali@linux-fr.org>2005-06-04 07:17:43 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2005-06-22 00:52:03 -0400
commiteb071cbbc38efa4b1d707f540de2ec6283ab0894 (patch)
treedd9037caf6acb546abe76f76d60987b8d870a1e4 /drivers/i2c/chips
parent5d740fe9fefda41292b5cabe70f4f8eff9f8aad0 (diff)
[PATCH] I2C: pcf8574 driver cleanup
I found a possible cleanup in the pcf8574 driver. We don't need to store the read value in our private data structure, as we then never use it again. I asked Aurelien and he is fine with the change. Please apply, thanks. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/i2c/chips')
-rw-r--r--drivers/i2c/chips/pcf8574.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/i2c/chips/pcf8574.c b/drivers/i2c/chips/pcf8574.c
index 4956e9effd75..cfcf64654080 100644
--- a/drivers/i2c/chips/pcf8574.c
+++ b/drivers/i2c/chips/pcf8574.c
@@ -57,7 +57,7 @@ SENSORS_INSMOD_2(pcf8574, pcf8574a);
57struct pcf8574_data { 57struct pcf8574_data {
58 struct i2c_client client; 58 struct i2c_client client;
59 59
60 u8 read, write; /* Register values */ 60 u8 write; /* Remember last written value */
61}; 61};
62 62
63static int pcf8574_attach_adapter(struct i2c_adapter *adapter); 63static int pcf8574_attach_adapter(struct i2c_adapter *adapter);
@@ -79,9 +79,7 @@ static struct i2c_driver pcf8574_driver = {
79static ssize_t show_read(struct device *dev, struct device_attribute *attr, char *buf) 79static ssize_t show_read(struct device *dev, struct device_attribute *attr, char *buf)
80{ 80{
81 struct i2c_client *client = to_i2c_client(dev); 81 struct i2c_client *client = to_i2c_client(dev);
82 struct pcf8574_data *data = i2c_get_clientdata(client); 82 return sprintf(buf, "%u\n", i2c_smbus_read_byte(client));
83 data->read = i2c_smbus_read_byte(client);
84 return sprintf(buf, "%u\n", data->read);
85} 83}
86 84
87static DEVICE_ATTR(read, S_IRUGO, show_read, NULL); 85static DEVICE_ATTR(read, S_IRUGO, show_read, NULL);