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brcmfmac: Fix off by one bug in brcmf_count_20mhz_channels()

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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 b48d891676
("brcmfmac: rework wiphy structure setup")

Acked-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Emil Goode <emilgoode@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Emil Goode 2014-09-23 00:49:55 +02:00 committed by John W. Linville
parent 2ba7d144d3
commit f8adaf0ae9
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
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@ -4921,7 +4921,7 @@ 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);