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authorRajkumar Manoharan <rmanohar@qca.qualcomm.com>2012-01-09 15:37:53 +0530
committerJohn W. Linville <linville@tuxdriver.com>2012-01-10 15:46:40 -0500
commit1a19f77f3642b8194ad9cf55548cc5d92e841766 (patch)
treeaed6d28a9043cb882e878676dc015d6b0f63c690 /drivers/net/wireless/ath/ath9k/calib.c
parentc40701eacbaebcfe3fb6fac8ef3da653021c212c (diff)
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.c1
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)