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Commit 2cbfaea4 authored by Sujith's avatar Sujith Committed by John W. Linville
Browse files

ath9k_hw: restrict valid nf readings for AR9271 to -114 



Noisefloor values read on AR9271 are unreliable if they
are less than -114, set those statically to -116.

Signed-off-by: default avatarSujith <Sujith.Manoharan@atheros.com>
Signed-off-by: default avatarVasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: default avatarLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 6398dc03

drivers/net/wireless/ath/ath9k/calib.c

+8 −0
Original line number Diff line number Diff line
@@ -101,6 +101,10 @@ static void ath9k_hw_do_getnf(struct ath_hw *ah, 
		nf = 0 - ((nf ^ 0x1ff) + 1);

	ath_print(common, ATH_DBG_CALIBRATE,

		  "NF calibrated [ctl] [chain 0] is %d\n", nf);



	if (AR_SREV_9271(ah) && (nf >= -114))

		nf = -116;



	nfarray[0] = nf;



	if (!AR_SREV_9285(ah) && !AR_SREV_9271(ah)) {
@@ -139,6 +143,10 @@ static void ath9k_hw_do_getnf(struct ath_hw *ah, 
		nf = 0 - ((nf ^ 0x1ff) + 1);

	ath_print(common, ATH_DBG_CALIBRATE,

		  "NF calibrated [ext] [chain 0] is %d\n", nf);



	if (AR_SREV_9271(ah) && (nf >= -114))

		nf = -116;



	nfarray[3] = nf;



	if (!AR_SREV_9285(ah) && !AR_SREV_9271(ah)) {