@@ -1067,8 +1067,7 @@ static int tb_dp_alloc_bandwidth(struct tb_tunnel *tunnel, int *alloc_up,
return 0;
}
-static int tb_dp_read_dprx(struct tb_tunnel *tunnel, u32 *rate, u32 *lanes,
- int timeout_msec)
+static int tb_dp_wait_dprx(struct tb_tunnel *tunnel, int timeout_msec)
{
ktime_t timeout = ktime_add_ms(ktime_get(), timeout_msec);
struct tb_port *in = tunnel->src_port;
@@ -1087,15 +1086,13 @@ static int tb_dp_read_dprx(struct tb_tunnel *tunnel, u32 *rate, u32 *lanes,
return ret;
if (val & DP_COMMON_CAP_DPRX_DONE) {
- *rate = tb_dp_cap_get_rate(val);
- *lanes = tb_dp_cap_get_lanes(val);
-
tb_tunnel_dbg(tunnel, "DPRX read done\n");
return 0;
}
usleep_range(100, 150);
} while (ktime_before(ktime_get(), timeout));
+ tb_tunnel_dbg(tunnel, "DPRX read timeout\n");
return -ETIMEDOUT;
}
@@ -1110,6 +1107,7 @@ static int tb_dp_read_cap(struct tb_tunnel *tunnel, unsigned int cap, u32 *rate,
switch (cap) {
case DP_LOCAL_CAP:
case DP_REMOTE_CAP:
+ case DP_COMMON_CAP:
break;
default:
@@ -1182,7 +1180,7 @@ static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up,
* reduced one). Otherwise return the remote (possibly
* reduced) caps.
*/
- ret = tb_dp_read_dprx(tunnel, &rate, &lanes, 150);
+ ret = tb_dp_wait_dprx(tunnel, 150);
if (ret) {
if (ret == -ETIMEDOUT)
ret = tb_dp_read_cap(tunnel, DP_REMOTE_CAP,
@@ -1190,6 +1188,9 @@ static int tb_dp_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up,
if (ret)
return ret;
}
+ ret = tb_dp_read_cap(tunnel, DP_COMMON_CAP, &rate, &lanes);
+ if (ret)
+ return ret;
} else if (sw->generation >= 2) {
ret = tb_dp_read_cap(tunnel, DP_REMOTE_CAP, &rate, &lanes);
if (ret)
There is no point doing this separately as the register layout is the same. For this reason rename tb_dp_read_dprx() to tb_dp_wait_dprx() and call tb_dp_read_cap() instead. While there add debug log if the DPRX capability read times out. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> --- drivers/thunderbolt/tunnel.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-)