From 93bf344f66995ef816bd63c165fa9ac1ea4fcb3d Mon Sep 17 00:00:00 2001 From: Gil Fine Date: Mon, 9 May 2022 23:49:03 +0300 Subject: thunderbolt: Fix buffer allocation of devices with no DisplayPort adapters For the case of a device without DisplayPort adapters we calculate incorrectly the amount of buffers. Fix the calculation for this case. Signed-off-by: Gil Fine Signed-off-by: Mika Westerberg --- drivers/thunderbolt/tunnel.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers/thunderbolt') diff --git a/drivers/thunderbolt/tunnel.c b/drivers/thunderbolt/tunnel.c index 8ccd70920b6a..2c3cf7fc3357 100644 --- a/drivers/thunderbolt/tunnel.c +++ b/drivers/thunderbolt/tunnel.c @@ -102,8 +102,11 @@ static unsigned int tb_available_credits(const struct tb_port *port, * Maximum number of DP streams possible through the * lane adapter. */ - ndp = (credits - (usb3 + pcie + spare)) / - (sw->min_dp_aux_credits + sw->min_dp_main_credits); + if (sw->min_dp_aux_credits + sw->min_dp_main_credits) + ndp = (credits - (usb3 + pcie + spare)) / + (sw->min_dp_aux_credits + sw->min_dp_main_credits); + else + ndp = 0; } else { ndp = 0; } -- cgit v1.2.3-70-g09d2