[PATCH v2] brcmfmac: Fix off by one bug in brcmf_count_20mhz_channels()

[Emil Goode]

In the brcmf_count_20mhz_channels function we are looping through a list
of channels received from firmware. Since the index of the first channel
is 0 the condition leads to an off by one bug. This is causing us to hit
the WARN_ON_ONCE(1) calls in the brcmu_d11n_decchspec function, which is
how I discovered the bug.

Introduced by:
commit b48d891676f756d48b4d0ee131e4a7a5d43ca417
("brcmfmac: rework wiphy structure setup")

Acked-by: Arend van Spriel <arend@xxxxxxxxxxxx>
Signed-off-by: Emil Goode <emilgoode@xxxxxxxxx>
---
v2: Added Arends "Acked-by" tag.

 drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
index 12a60ca..0517687 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
@@ -4924,7 +4924,7 @@ static void brcmf_count_20mhz_channels(struct brcmf_cfg80211_info *cfg,
 	struct brcmu_chan ch;
 	int i;
 
-	for (i = 0; i <= total; i++) {
+	for (i = 0; i < total; i++) {
 		ch.chspec = (u16)le32_to_cpu(chlist->element[i]);
 		cfg->d11inf.decchspec(&ch);
 
-- 
2.1.0

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