diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2021-10-06 10:35:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-26 11:58:39 +0100 |
| commit | 7428a1525b443819e37a0f4859655c5cb130903b (patch) | |
| tree | 32bd669475cc1991185450369f3b66ac8f1a90ca /drivers/net | |
| parent | ae4b39e0c68a397704f080dd9706774c34fe4200 (diff) | |
b43legacy: fix a lower bounds test
[ Upstream commit c1c8380b0320ab757e60ed90efc8b1992a943256 ]
The problem is that "channel" is an unsigned int, when it's less 5 the
value of "channel - 5" is not a negative number as one would expect but
is very high positive value instead.
This means that "start" becomes a very high positive value. The result
of that is that we never enter the "for (i = start; i <= end; i++) {"
loop. Instead of storing the result from b43legacy_radio_aci_detect()
it just uses zero.
Fixes: 75388acd0cd8 ("[B43LEGACY]: add mac80211-based driver for legacy BCM43xx devices")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Michael Büsch <m@bues.ch>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211006073542.GD8404@kili
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/b43legacy/radio.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/b43legacy/radio.c b/drivers/net/wireless/b43legacy/radio.c index 9501420340a9..5b1e8890305c 100644 --- a/drivers/net/wireless/b43legacy/radio.c +++ b/drivers/net/wireless/b43legacy/radio.c @@ -299,7 +299,7 @@ u8 b43legacy_radio_aci_scan(struct b43legacy_wldev *dev) & 0x7FFF); b43legacy_set_all_gains(dev, 3, 8, 1); - start = (channel - 5 > 0) ? channel - 5 : 1; + start = (channel > 5) ? channel - 5 : 1; end = (channel + 5 < 14) ? channel + 5 : 13; for (i = start; i <= end; i++) { |