hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

[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>
This commit is contained in:
Jean Delvare 2005-06-04 13:17:43 +02:00 committed by Greg Kroah-Hartman
parent 5d740fe9fe
commit eb071cbbc3
1 changed files with 2 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/i2c/chips/pcf8574.c
View File

@ -57,7 +57,7 @@ SENSORS_INSMOD_2(pcf8574, pcf8574a);
struct pcf8574_data {
struct i2c_client client;
u8 read, write; /* Register values */
u8 write; /* Remember last written value */
};
static int pcf8574_attach_adapter(struct i2c_adapter *adapter);
@ -79,9 +79,7 @@ static struct i2c_driver pcf8574_driver = {
static ssize_t show_read(struct device *dev, struct device_attribute *attr, char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct pcf8574_data *data = i2c_get_clientdata(client);
data->read = i2c_smbus_read_byte(client);
return sprintf(buf, "%u\n", data->read);
return sprintf(buf, "%u\n", i2c_smbus_read_byte(client));
}
static DEVICE_ATTR(read, S_IRUGO, show_read, NULL);