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net/i40e/base: fix division by zero

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For some cases when reading from device are incorrect or image is
incorrect, this part of code causes crash due to division by zero.

Fixes: 8db9e2a1b232 ("i40e: base driver")

Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
This commit is contained in:
Jingjing Wu 2016-12-10 19:24:50 +08:00 committed by Ferruh Yigit
parent 8428366825
commit 5a26067443
1 changed files with 4 additions and 2 deletions
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6
drivers/net/i40e/base/i40e_common.c
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@ -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