| Message ID | 20220509204904.8936-2-gil.fine@intel.com |
|---|---|
| State | New |
| Headers | show |
| Series | thunderbolt: Fix buffers allocation for device without DisplayPort adaptors | expand |
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; }
For the case of device without DP adaptors, we calculate incorrectly the buffers allocation. Here we fix the calculation for this case. Signed-off-by: Gil Fine <gil.fine@intel.com> --- drivers/thunderbolt/tunnel.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)