diff options
| author | Jean Delvare <khali@linux-fr.org> | 2006-12-10 15:21:30 -0500 |
|---|---|---|
| committer | Jean Delvare <khali@arrakis.delvare> | 2006-12-10 15:21:30 -0500 |
| commit | 2c003e8e1c0c241aec162ba9ec781089c5b2ff3f (patch) | |
| tree | 612ab73ce5a6810bd3fb459520798b7a62e670d3 /drivers/i2c/i2c-dev.c | |
| parent | 813e30e9ab917f5493147451cfdbf6356a3dcee0 (diff) | |
i2c: Use put_user instead of copy_to_user where possible
This speeds up the I2C_FUNCS ioctl by 5 to 8% in my tests.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Laughed-at-by: Mark M. Hoffman <mhoffman@lightlink.com>
Diffstat (limited to 'drivers/i2c/i2c-dev.c')
| -rw-r--r-- | drivers/i2c/i2c-dev.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c index 2e22a2ffa606..d66cefc63df7 100644 --- a/drivers/i2c/i2c-dev.c +++ b/drivers/i2c/i2c-dev.c | |||
| @@ -193,8 +193,7 @@ static int i2cdev_ioctl(struct inode *inode, struct file *file, | |||
| 193 | return 0; | 193 | return 0; |
| 194 | case I2C_FUNCS: | 194 | case I2C_FUNCS: |
| 195 | funcs = i2c_get_functionality(client->adapter); | 195 | funcs = i2c_get_functionality(client->adapter); |
| 196 | return (copy_to_user((unsigned long __user *)arg, &funcs, | 196 | return put_user(funcs, (unsigned long __user *)arg); |
| 197 | sizeof(unsigned long)))?-EFAULT:0; | ||
| 198 | 197 | ||
| 199 | case I2C_RDWR: | 198 | case I2C_RDWR: |
| 200 | if (copy_from_user(&rdwr_arg, | 199 | if (copy_from_user(&rdwr_arg, |