[Why]
According to DP spec, it should shift left 4 digits for NO_STOP_BIT
in REMOTE_I2C_READ message. Not 5 digits.
[How]
Correct the shifting value of NO_STOP_BIT for DP_REMOTE_I2C_READ case in
drm_dp_encode_sideband_req().
Signed-off-by: Wayne Lin <wayne....@amd.com>
---
drivers/gpu/drm/drm_dp_mst_topology.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c
b/drivers/gpu/drm/drm_dp_mst_topology.c
index 1d1bfa49ca2b..0557e225ff67 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -393,7 +393,7 @@ drm_dp_encode_sideband_req(const struct
drm_dp_sideband_msg_req_body *req,
memcpy(&buf[idx],
req->u.i2c_read.transactions[i].bytes,
req->u.i2c_read.transactions[i].num_bytes);
idx += req->u.i2c_read.transactions[i].num_bytes;
- buf[idx] = (req->u.i2c_read.transactions[i].no_stop_bit
& 0x1) << 5;
+ buf[idx] = (req->u.i2c_read.transactions[i].no_stop_bit
& 0x1) << 4;
buf[idx] |=
(req->u.i2c_read.transactions[i].i2c_transaction_delay & 0xf);
idx++;
}
--
2.17.1
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