[dpdk-dev] [PATCH 04/10] net/i40e: fix compilation with -Og

[Olivier Matz]

The compilation with gcc-6.3.0 and EXTRA_CFLAGS=-Og gives the following
error:

  CC i40e_adminq.o
  i40e_adminq.c: In function ‘i40e_clean_arq_element’:
  i40e_adminq.c:1145:56: error: ‘ntu’ may be used uninitialized in
                         this function [-Werror=maybe-uninitialized]
     *pending = (ntc > ntu ? hw->aq.arq.count : 0) + (ntu - ntc);
                                                     ~~~~~^~~~~~

Depending on what is defined, ntu actually be used without being
initialized. Fix it by initializing it to 0, despite this is probably
not the proper fix. Moreover, the error is located in base/ directory,
which contains driver code common to several platforms (not only dpdk).

Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
---
 drivers/net/i40e/base/i40e_adminq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/i40e/base/i40e_adminq.c b/drivers/net/i40e/base/i40e_adminq.c
index 8cc8c5eca..27c133323 100644
--- a/drivers/net/i40e/base/i40e_adminq.c
+++ b/drivers/net/i40e/base/i40e_adminq.c
@@ -1047,7 +1047,7 @@ enum i40e_status_code i40e_clean_arq_element(struct i40e_hw *hw,
 	u16 desc_idx;
 	u16 datalen;
 	u16 flags;
-	u16 ntu;
+	u16 ntu = 0;
 
 	/* pre-clean the event info */
 	i40e_memset(&e->desc, 0, sizeof(e->desc), I40E_NONDMA_MEM);
-- 
2.11.0