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-rw-r--r--drivers/w1/masters/ds2490.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/w1/masters/ds2490.c b/drivers/w1/masters/ds2490.c
index 6b188e8008e4..6fabf584395f 100644
--- a/drivers/w1/masters/ds2490.c
+++ b/drivers/w1/masters/ds2490.c
@@ -525,7 +525,12 @@ static int ds_write_bit(struct ds_device *dev, u8 bit)
int err;
struct ds_status st;
- err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | (bit) ? COMM_D : 0, 0);
+ /* Set COMM_ICP to write without a readback. Note, this will
+ * produce one time slot, a down followed by an up with COMM_D
+ * only determing the timing.
+ */
+ err = ds_send_control(dev, COMM_BIT_IO | COMM_IM | COMM_ICP |
+ (bit ? COMM_D : 0), 0);
if (err)
return err;