diff options
| author | Tim Gardner <tim.gardner@canonical.com> | 2021-10-05 16:55:54 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2021-10-05 17:29:20 +0300 |
| commit | 7210b4b77fe47697890d2d3b2ce57ac9f767bffc (patch) | |
| tree | 44afaca21fa6f3278b774de157ef49369093c3a2 /drivers | |
| parent | 57bb2398bd5fb202cd9688a13c685992737d4c16 (diff) | |
ath11k: Remove unused variable in ath11k_dp_rx_mon_merg_msdus()
Coverity complains that a constant variable guards dead code. In fact,
mpdu_buf is set NULL and never updated.
4834err_merge_fail:
null: At condition mpdu_buf, the value of mpdu_buf must be NULL.
dead_error_condition: The condition mpdu_buf cannot be true.
CID 92162 (#1 of 1): 'Constant' variable guards dead code (DEADCODE)
dead_error_line: Execution cannot reach the expression decap_format !=
DP_RX_DECAP_TYPE_RAW inside this statement: if (mpdu_buf && decap_forma....
Local variable mpdu_buf is assigned only once, to a constant value, making it
effectively constant throughout its scope. If this is not the intent, examine
the logic to see if there is a missing assignment that would make mpdu_buf not
remain constant.
4835 if (mpdu_buf && decap_format != DP_RX_DECAP_TYPE_RAW) {
Fix this by removing mpdu_buf and unreachable code.
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: ath11k@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210927150743.19816-1-tim.gardner@canonical.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/ath/ath11k/dp_rx.c | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c index 75f6d55dca46..1232bbea4b65 100644 --- a/drivers/net/wireless/ath/ath11k/dp_rx.c +++ b/drivers/net/wireless/ath/ath11k/dp_rx.c @@ -4828,7 +4828,7 @@ ath11k_dp_rx_mon_merg_msdus(struct ath11k *ar, struct ieee80211_rx_status *rxs) { struct ath11k_base *ab = ar->ab; - struct sk_buff *msdu, *mpdu_buf, *prev_buf; + struct sk_buff *msdu, *prev_buf; u32 wifi_hdr_len; struct hal_rx_desc *rx_desc; char *hdr_desc; @@ -4836,8 +4836,6 @@ ath11k_dp_rx_mon_merg_msdus(struct ath11k *ar, struct ieee80211_hdr_3addr *wh; struct rx_attention *rx_attention; - mpdu_buf = NULL; - if (!head_msdu) goto err_merge_fail; @@ -4920,12 +4918,6 @@ ath11k_dp_rx_mon_merg_msdus(struct ath11k *ar, return head_msdu; err_merge_fail: - if (mpdu_buf && decap_format != DP_RX_DECAP_TYPE_RAW) { - ath11k_dbg(ab, ATH11K_DBG_DATA, - "err_merge_fail mpdu_buf %pK", mpdu_buf); - /* Free the head buffer */ - dev_kfree_skb_any(mpdu_buf); - } return NULL; } |