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323-0000-brcmfmac-fix-setting-primary-channel-for-80-MHz-widt.patch

323-0000-brcmfmac-fix-setting-primary-channel-for-80-MHz-widt.patch 2.2 KB
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  1. From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
    2. 

  2. Date: Wed, 20 Jan 2016 16:46:04 +0100
    3. 

  3. Subject: [PATCH] brcmfmac: fix setting primary channel for 80 MHz width
    4. 

  4. MIME-Version: 1.0
    5. 

  5. Content-Type: text/plain; charset=UTF-8
    6. 

  6. Content-Transfer-Encoding: 8bit
    7. 

  7. 

  8. First of all it changes the way we calculate primary channel offset. If
    9. 

  9. we use e.g. 80 MHz channel with primary frequency 5180 MHz (which means
    10. 

  10. center frequency is 5210 MHz) it makes sense to calculate primary offset
    11. 

  11. as -30 MHz.
    12. 

  12. Then it fixes values we compare primary_offset with. We were comparing
    13. 

  13. offset in MHz against -2 or 2 which was resulting in picking a wrong
    14. 

  14. primary channel.
    15. 

  15. 

  16. Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
    17. 

  17. Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
    18. 

  18. ---
    19. 

  19. 

  20. --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
    21. 

  21. +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
    22. 

  22. @@ -247,7 +247,7 @@ static u16 chandef_to_chanspec(struct br
    23. 

  23.  	brcmf_dbg(TRACE, "chandef: control %d center %d width %d\n",
    24. 

  24.  		  ch->chan->center_freq, ch->center_freq1, ch->width);
    25. 

  25.  	ch_inf.chnum = ieee80211_frequency_to_channel(ch->center_freq1);
    26. 

  26. -	primary_offset = ch->center_freq1 - ch->chan->center_freq;
    27. 

  27. +	primary_offset = ch->chan->center_freq - ch->center_freq1;
    28. 

  28.  	switch (ch->width) {
    29. 

  29.  	case NL80211_CHAN_WIDTH_20:
    30. 

  30.  	case NL80211_CHAN_WIDTH_20_NOHT:
    31. 

  31. @@ -256,24 +256,21 @@ static u16 chandef_to_chanspec(struct br
    32. 

  32.  		break;
    33. 

  33.  	case NL80211_CHAN_WIDTH_40:
    34. 

  34.  		ch_inf.bw = BRCMU_CHAN_BW_40;
    35. 

  35. -		if (primary_offset < 0)
    36. 

  36. +		if (primary_offset > 0)
    37. 

  37.  			ch_inf.sb = BRCMU_CHAN_SB_U;
    38. 

  38.  		else
    39. 

  39.  			ch_inf.sb = BRCMU_CHAN_SB_L;
    40. 

  40.  		break;
    41. 

  41.  	case NL80211_CHAN_WIDTH_80:
    42. 

  42.  		ch_inf.bw = BRCMU_CHAN_BW_80;
    43. 

  43. -		if (primary_offset < 0) {
    44. 

  44. -			if (primary_offset < -CH_10MHZ_APART)
    45. 

  45. -				ch_inf.sb = BRCMU_CHAN_SB_UU;
    46. 

  46. -			else
    47. 

  47. -				ch_inf.sb = BRCMU_CHAN_SB_UL;
    48. 

  48. -		} else {
    49. 

  49. -			if (primary_offset > CH_10MHZ_APART)
    50. 

  50. -				ch_inf.sb = BRCMU_CHAN_SB_LL;
    51. 

  51. -			else
    52. 

  52. -				ch_inf.sb = BRCMU_CHAN_SB_LU;
    53. 

  53. -		}
    54. 

  54. +		if (primary_offset == -30)
    55. 

  55. +			ch_inf.sb = BRCMU_CHAN_SB_LL;
    56. 

  56. +		else if (primary_offset == -10)
    57. 

  57. +			ch_inf.sb = BRCMU_CHAN_SB_LU;
    58. 

  58. +		else if (primary_offset == 10)
    59. 

  59. +			ch_inf.sb = BRCMU_CHAN_SB_UL;
    60. 

  60. +		else
    61. 

  61. +			ch_inf.sb = BRCMU_CHAN_SB_UU;
    62. 

  62.  		break;
    63. 

  63.  	case NL80211_CHAN_WIDTH_80P80:
    64. 

  64.  	case NL80211_CHAN_WIDTH_160:
    65.