diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-12-28 16:49:45 +0200 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2024-02-16 12:29:22 +0200 |
| commit | 2ec67a48cf8f18b8c6cecc70dcd5d52cbf8eba7e (patch) | |
| tree | ebd21df0e60cd86f634d82db2f0c08f4edf3b094 | |
| parent | c7857ee68e1b9b805430f365392b6d40f75a48fc (diff) | |
thunderbolt: Log an error if DPTX request is not cleared
This helps debugging issues around DisplayPort bandwidth allocation
mode.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
| -rw-r--r-- | drivers/thunderbolt/usb4.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c index 4b35898aa216..f4fba144105d 100644 --- a/drivers/thunderbolt/usb4.c +++ b/drivers/thunderbolt/usb4.c @@ -2858,8 +2858,10 @@ static int usb4_dp_port_wait_and_clear_cm_ack(struct tb_port *port, usleep_range(50, 100); } while (ktime_before(ktime_get(), end)); - if (val & ADP_DP_CS_8_DR) + if (val & ADP_DP_CS_8_DR) { + tb_port_warn(port, "timeout waiting for DPTX request to clear\n"); return -ETIMEDOUT; + } ret = tb_port_read(port, &val, TB_CFG_PORT, port->cap_adap + ADP_DP_CS_2, 1); |