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-rw-r--r--drivers/w1/masters/ds2490.c21
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)