diff options
| author | Rajkumar Manoharan <rmanohar@qca.qualcomm.com> | 2012-01-09 14:07:53 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-01-11 00:46:40 +0400 |
| commit | 1a19f77f3642b8194ad9cf55548cc5d92e841766 (patch) | |
| tree | aed6d28a9043cb882e878676dc015d6b0f63c690 /drivers/net/wireless/ath/ath9k/calib.c | |
| parent | c40701eacbaebcfe3fb6fac8ef3da653021c212c (diff) | |
| download | linux-1a19f77f3642b8194ad9cf55548cc5d92e841766.tar.xz | |
ath9k: Fix regression in channelwidth switch at the same channel
The commit "ath9k: Fix invalid noisefloor reading due to channel update"
preserves the current channel noisefloor readings before updating
channel type at the same channel index. It is also updating the curchan
pointer. As survey updation is also referring curchan pointer to fetch
the appropriate index, which might leads to invalid memory access. This
patch partially reverts the change and stores the noise floor history
buffer before updating channel type w/o updating curchan.
Cc: stable@kernel.org
Cc: Gary Morain <gmorain@google.com>
Cc: Paul Stewart <pstew@google.com>
Reported-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/calib.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/calib.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/calib.c b/drivers/net/wireless/ath/ath9k/calib.c index 172e33db7f4c..2f4b48e6fb03 100644 --- a/drivers/net/wireless/ath/ath9k/calib.c +++ b/drivers/net/wireless/ath/ath9k/calib.c @@ -400,6 +400,7 @@ bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan) ah->noise = ath9k_hw_getchan_noise(ah, chan); return true; } +EXPORT_SYMBOL(ath9k_hw_getnf); void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah, struct ath9k_channel *chan) |