From ff414f31ce3750d259549c3b9eac8e855b5348f0 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 8 Jul 2019 14:50:06 +0200 Subject: ath10k: work around uninitialized vht_pfr variable As clang points out, the vht_pfr is assigned to a struct member without being initialized in one case: drivers/net/wireless/ath/ath10k/mac.c:7528:7: error: variable 'vht_pfr' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized] if (!ath10k_mac_can_set_bitrate_mask(ar, band, mask, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/wireless/ath/ath10k/mac.c:7551:20: note: uninitialized use occurs here arvif->vht_pfr = vht_pfr; ^~~~~~~ drivers/net/wireless/ath/ath10k/mac.c:7528:3: note: remove the 'if' if its condition is always true if (!ath10k_mac_can_set_bitrate_mask(ar, band, mask, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/wireless/ath/ath10k/mac.c:7483:12: note: initialize the variable 'vht_pfr' to silence this warning u8 vht_pfr; Add an explicit but probably incorrect initialization here. I suspect we want a better fix here, but chose this approach to illustrate the issue. Fixes: 8b97b055dc9d ("ath10k: fix failure to set multiple fixed rate") Signed-off-by: Arnd Bergmann Reviewed-by: Nathan Chancellor Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/mac.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/net/wireless/ath/ath10k') diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index e43a566eef77..0606416dc971 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -7541,6 +7541,8 @@ static int ath10k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw, &vht_nss, true); update_bitrate_mask = false; + } else { + vht_pfr = 0; } mutex_lock(&ar->conf_mutex); -- cgit v1.2.3