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@xxxxxxxxx>
---
drivers/thunderbolt/tunnel.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
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;
}
--
2.17.1
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