[dpdk-dev] [PATCH 28/31] net/i40e/base: avoid division by zero
Jingjing Wu
jingjing.wu at intel.com
Sat Dec 3 02:19:10 CET 2016
For some cases when reading from device are incorrect or image is
incorrect, this part of code causes crash due to division by zero.
Signed-off-by: Jingjing Wu <jingjing.wu at intel.com>
---
drivers/net/i40e/base/i40e_common.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/i40e/base/i40e_common.c b/drivers/net/i40e/base/i40e_common.c
index 14aaac6..fdf9d9b 100644
--- a/drivers/net/i40e/base/i40e_common.c
+++ b/drivers/net/i40e/base/i40e_common.c
@@ -3967,8 +3967,10 @@ STATIC void i40e_parse_discover_capabilities(struct i40e_hw *hw, void *buff,
/* partition id is 1-based, and functions are evenly spread
* across the ports as partitions
*/
- hw->partition_id = (hw->pf_id / hw->num_ports) + 1;
- hw->num_partitions = num_functions / hw->num_ports;
+ if (hw->num_ports != 0) {
+ hw->partition_id = (hw->pf_id / hw->num_ports) + 1;
+ hw->num_partitions = num_functions / hw->num_ports;
+ }
/* additional HW specific goodies that might
* someday be HW version specific
--
2.4.11
More information about the dev
mailing list