diff options
Diffstat (limited to 'drivers/w1')
| -rw-r--r-- | drivers/w1/masters/ds2490.c | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/drivers/w1/masters/ds2490.c b/drivers/w1/masters/ds2490.c index 1b632d549e79..c4ff70b2c7c4 100644 --- a/drivers/w1/masters/ds2490.c +++ b/drivers/w1/masters/ds2490.c @@ -490,28 +490,15 @@ static int ds_set_pullup(struct ds_device *dev, int delay) static int ds_touch_bit(struct ds_device *dev, u8 bit, u8 *tbit) { - int err, count; + int err; struct ds_status st; - u16 value = (COMM_BIT_IO | COMM_IM) | ((bit) ? COMM_D : 0); - u16 cmd; - err = ds_send_control(dev, value, 0); + err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | (bit ? COMM_D : 0), + 0); if (err) return err; - count = 0; - do { - err = ds_wait_status(dev, &st); - if (err) - return err; - - cmd = st.command0 | (st.command1 << 8); - } while (cmd != value && ++count < 10); - - if (err < 0 || count >= 10) { - printk(KERN_ERR "Failed to obtain status.\n"); - return -EINVAL; - } + ds_wait_status(dev, &st); err = ds_recv_data(dev, tbit, sizeof(*tbit)); if (err < 0) |