From: Panu Matilainen <pmatilai@redhat.com>
To: Aaron Conole <aconole@redhat.com>, dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH 8/8] drivers/net/ixgbe: Fix uninitialized warning
Date: Thu, 10 Mar 2016 15:42:58 +0200 [thread overview]
Message-ID: <56E179E2.1020704@redhat.com> (raw)
In-Reply-To: <1456426121-21423-9-git-send-email-aconole@redhat.com>
On 02/25/2016 08:48 PM, Aaron Conole wrote:
> Silence a compiler warning that this variable may be used uninitialized.
>
> Signed-off-by: Aaron Conole <aconole@redhat.com>
> ---
> drivers/net/ixgbe/ixgbe_rxtx.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
> index e95e6b7..775edc7 100644
> --- a/drivers/net/ixgbe/ixgbe_rxtx.c
> +++ b/drivers/net/ixgbe/ixgbe_rxtx.c
> @@ -1563,7 +1563,7 @@ ixgbe_recv_pkts_lro(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts,
> struct ixgbe_rx_entry *rxe;
> struct ixgbe_scattered_rx_entry *sc_entry;
> struct ixgbe_scattered_rx_entry *next_sc_entry;
> - struct ixgbe_rx_entry *next_rxe;
> + struct ixgbe_rx_entry *next_rxe = NULL;
> struct rte_mbuf *first_seg;
> struct rte_mbuf *rxm;
> struct rte_mbuf *nmb;
> @@ -1740,7 +1740,7 @@ next_desc:
> * the pointer to the first mbuf at the NEXTP entry in the
> * sw_sc_ring and continue to parse the RX ring.
> */
> - if (!eop) {
> + if (!eop && next_rxe) {
> rxm->next = next_rxe->mbuf;
> next_sc_entry->fbuf = first_seg;
> goto next_desc;
>
The patch looks ok as such, but then again warning looks like a false
positive to me: assignment and dereferencing depend on the same value of
eop, which cannot change between the two.
CC'ing the maintainers for attention...
- Panu -
next prev parent reply other threads:[~2016-03-10 13:43 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-25 18:48 [dpdk-dev] [PATCH 0/8] Various fixes to compile with gcc6 Aaron Conole
2016-02-25 18:48 ` [dpdk-dev] [PATCH 1/8] lpm: Fix pointer aliasing issues Aaron Conole
2016-02-25 21:30 ` Bruce Richardson
2016-02-25 22:00 ` Aaron Conole
2016-03-22 20:02 ` Thomas Monjalon
2016-03-22 20:47 ` Aaron Conole
2016-02-25 18:48 ` [dpdk-dev] [PATCH 2/8] app/test/test: Fix missing brackets Aaron Conole
2016-03-10 13:25 ` Panu Matilainen
2016-03-18 1:05 ` Zhang, Helin
2016-02-25 18:48 ` [dpdk-dev] [PATCH 3/8] drivers/net/e1000: " Aaron Conole
2016-02-26 1:02 ` Lu, Wenzhuo
2016-02-26 13:13 ` Aaron Conole
2016-03-01 11:02 ` Panu Matilainen
2016-03-22 20:06 ` Thomas Monjalon
2016-03-18 1:03 ` Zhang, Helin
2016-02-25 18:48 ` [dpdk-dev] [PATCH 4/8] drivers/net/e1000: Fix missing lsc interrupt check brackets Aaron Conole
2016-03-10 13:27 ` Panu Matilainen
2016-03-18 0:55 ` Zhang, Helin
2016-02-25 18:48 ` [dpdk-dev] [PATCH 5/8] drivers/net/ixgbe: Fix vlan filter missing brackets Aaron Conole
2016-03-10 13:28 ` Panu Matilainen
2016-03-18 0:45 ` Zhang, Helin
2016-02-25 18:48 ` [dpdk-dev] [PATCH 6/8] drivers/net/e1000/igb: Signed left shift operator Aaron Conole
2016-03-10 13:29 ` Panu Matilainen
2016-03-18 0:54 ` Zhang, Helin
2016-02-25 18:48 ` [dpdk-dev] [PATCH 7/8] drivers/net/ixgbe: " Aaron Conole
2016-03-10 13:30 ` Panu Matilainen
2016-03-18 0:43 ` Zhang, Helin
2016-02-25 18:48 ` [dpdk-dev] [PATCH 8/8] drivers/net/ixgbe: Fix uninitialized warning Aaron Conole
2016-03-10 13:42 ` Panu Matilainen [this message]
2016-03-10 14:45 ` Remy Horton
2016-03-10 15:03 ` Panu Matilainen
2016-03-11 9:22 ` Remy Horton
2016-03-18 0:53 ` Zhang, Helin
2016-03-17 15:39 ` [dpdk-dev] [PATCH 0/8] Various fixes to compile with gcc6 Thomas Monjalon
2016-03-17 15:45 ` Thomas Monjalon
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