[dpdk-dev] [PATCH v2 5/5] net/i40e: fix dereference before check when getting EEPROM

[Bruce Richardson]

As flagged by coverity, the "info" structure is being explicitly
dereferenced before being checked later for a NULL value.

Coverity issue: 277241
Fixes: 98e60c0d43f1 ("net/i40e: add module EEPROM callbacks for i40e")
CC: stable at dpdk.org
Cc: zijie.pan at 6wind.com
CC: Beilei Xing <beilei.xing at intel.com>
CC: Qi Zhang <qi.z.zhang at intel.com>

Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
Acked-By: Rami Rosen <ramirose at gmail.com>
---
 drivers/net/i40e/i40e_ethdev.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index b031bf4c6..6450af016 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -11893,16 +11893,17 @@ static int i40e_get_module_eeprom(struct rte_eth_dev *dev,
 	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	bool is_sfp = false;
 	i40e_status status;
-	uint8_t *data = info->data;
+	uint8_t *data;
 	uint32_t value = 0;
 	uint32_t i;
 
-	if (!info || !info->length || !data)
+	if (!info || !info->length || !info->data)
 		return -EINVAL;
 
 	if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP)
 		is_sfp = true;
 
+	data = info->data;
 	for (i = 0; i < info->length; i++) {
 		u32 offset = i + info->offset;
 		u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0;
-- 
2.20.1