| Message ID | 20211125073733.74902-5-mika.westerberg@linux.intel.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 6cb27a04fb779717c4a3d20233b93596885838cf |
| Headers | show |
| Series | thunderbolt: Improvements for PM and USB4 compatibility | expand |
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index 3014146081c1..463cfdc0b42f 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -623,6 +623,9 @@ int tb_port_add_nfc_credits(struct tb_port *port, int credits) return 0; nfc_credits = port->config.nfc_credits & ADP_CS_4_NFC_BUFFERS_MASK; + if (credits < 0) + credits = max_t(int, -nfc_credits, credits); + nfc_credits += credits; tb_port_dbg(port, "adding %d NFC credits to %lu", credits,
This might happen if the boot firmware uses different amount of NFC credits than what the router suggests, or we are dealing with pre-USB4 device. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> --- drivers/thunderbolt/switch.c | 3 +++ 1 file changed, 3 insertions(+)