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ath9k: fix PA linearization calibration related crash

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Before PAPRD training can run, the card needs to have sent a packet for
thermal calibration. Sending a dummy packet with the PAPRD training flag
set causes a crash under some circumstance.
Fix the code by replacing the dummy tx with a delay that waits for a
real packet tx to have occurred.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2012-08-27 17:00:07 +02:00 • committed by John W. Linville
parent 1630d25fd0
commit 51dea9be7e
4 changed files with 7 additions and 8 deletions
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9
drivers/net/wireless/ath/ath9k/link.c
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@ -256,7 +256,7 @@ void ath_paprd_calibrate(struct work_struct *work)
int len = 1800;
int ret;
if (!caldata)
if (!caldata || !caldata->paprd_packet_sent || caldata->paprd_done)
return;
ath9k_ps_wakeup(sc);
@ -283,13 +283,6 @@ void ath_paprd_calibrate(struct work_struct *work)
continue;
chain_ok = 0;
ath_dbg(common, CALIBRATE,
"Sending PAPRD frame for thermal measurement on chain %d\n",
chain);
if (!ath_paprd_send_frame(sc, skb, chain))
goto fail_paprd;
ar9003_paprd_setup_gain_table(ah, chain);
ath_dbg(common, CALIBRATE,