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Diffstat (limited to 'drivers/i2c/i2c-dev.c')
-rw-r--r--drivers/i2c/i2c-dev.c17
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index 38538971f481..2413ec9f8207 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -421,16 +421,6 @@ static long i2cdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
switch (cmd) {
case I2C_SLAVE:
case I2C_SLAVE_FORCE:
- /* NOTE: devices set up to work with "new style" drivers
- * can't use I2C_SLAVE, even when the device node is not
- * bound to a driver. Only I2C_SLAVE_FORCE will work.
- *
- * Setting the PEC flag here won't affect kernel drivers,
- * which will be using the i2c_client node registered with
- * the driver model core. Likewise, when that client has
- * the PEC flag already set, the i2c-dev driver won't see
- * (or use) this setting.
- */
if ((arg > 0x3ff) ||
(((client->flags & I2C_M_TEN) == 0) && arg > 0x7f))
return -EINVAL;
@@ -446,6 +436,13 @@ static long i2cdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
client->flags &= ~I2C_M_TEN;
return 0;
case I2C_PEC:
+ /*
+ * Setting the PEC flag here won't affect kernel drivers,
+ * which will be using the i2c_client node registered with
+ * the driver model core. Likewise, when that client has
+ * the PEC flag already set, the i2c-dev driver won't see
+ * (or use) this setting.
+ */
if (arg)
client->flags |= I2C_CLIENT_PEC;
else