package/kernel/mac80211/patches/565-ath9k_restart_after_nfcal_failure.patch

   1 --- a/drivers/net/wireless/ath/ath9k/calib.c
   2 +++ b/drivers/net/wireless/ath/ath9k/calib.c
   3 @@ -234,7 +234,7 @@ void ath9k_hw_start_nfcal(struct ath_hw
   4         REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
   5  }
   6
   7 -void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan)
   8 +int ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan)
   9  {
  10         struct ath9k_nfcal_hist *h = NULL;
  11         unsigned i, j;
  12 @@ -301,7 +301,7 @@ void ath9k_hw_loadnf(struct ath_hw *ah,
  13                 ath_dbg(common, ANY,
  14                         "Timeout while waiting for nf to load: AR_PHY_AGC_CONTROL=0x%x\n",
  15                         REG_READ(ah, AR_PHY_AGC_CONTROL));
  16 -               return;
  17 +               return -ETIMEDOUT;
  18         }
  19
  20         /*
  21 @@ -322,6 +322,8 @@ void ath9k_hw_loadnf(struct ath_hw *ah,
  22                 }
  23         }
  24         REGWRITE_BUFFER_FLUSH(ah);
  25 +
  26 +       return 0;
  27  }
  28
  29
  30 --- a/drivers/net/wireless/ath/ath9k/calib.h
  31 +++ b/drivers/net/wireless/ath/ath9k/calib.h
  32 @@ -109,7 +109,7 @@ struct ath9k_pacal_info{
  33
  34  bool ath9k_hw_reset_calvalid(struct ath_hw *ah);
  35  void ath9k_hw_start_nfcal(struct ath_hw *ah, bool update);
  36 -void ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
  37 +int ath9k_hw_loadnf(struct ath_hw *ah, struct ath9k_channel *chan);
  38  bool ath9k_hw_getnf(struct ath_hw *ah, struct ath9k_channel *chan);
  39  void ath9k_init_nfcal_hist_buffer(struct ath_hw *ah,
  40                                   struct ath9k_channel *chan);
  41 --- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
  42 +++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
  43 @@ -657,14 +657,13 @@ static void ar9002_hw_olc_temp_compensat
  44                 ar9280_hw_olc_temp_compensation(ah);
  45  }
  46
  47 -static bool ar9002_hw_calibrate(struct ath_hw *ah,
  48 -                               struct ath9k_channel *chan,
  49 -                               u8 rxchainmask,
  50 -                               bool longcal)
  51 +static int ar9002_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
  52 +                              u8 rxchainmask, bool longcal)
  53  {
  54         bool iscaldone = true;
  55         struct ath9k_cal_list *currCal = ah->cal_list_curr;
  56         bool nfcal, nfcal_pending = false;
  57 +       int ret;
  58
  59         nfcal = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) & AR_PHY_AGC_CONTROL_NF);
  60         if (ah->caldata)
  61 @@ -698,7 +697,9 @@ static bool ar9002_hw_calibrate(struct a
  62                          * NF is slow time-variant, so it is OK to use a
  63                          * historical value.
  64                          */
  65 -                       ath9k_hw_loadnf(ah, ah->curchan);
  66 +                       ret = ath9k_hw_loadnf(ah, ah->curchan);
  67 +                       if (ret < 0)
  68 +                               return ret;
  69                 }
  70
  71                 if (longcal) {
  72 --- a/drivers/net/wireless/ath/ath9k/hw-ops.h
  73 +++ b/drivers/net/wireless/ath/ath9k/hw-ops.h
  74 @@ -41,10 +41,9 @@ static inline void ath9k_hw_set_desc_lin
  75         ath9k_hw_ops(ah)->set_desc_link(ds, link);
  76  }
  77
  78 -static inline bool ath9k_hw_calibrate(struct ath_hw *ah,
  79 -                                     struct ath9k_channel *chan,
  80 -                                     u8 rxchainmask,
  81 -                                     bool longcal)
  82 +static inline int ath9k_hw_calibrate(struct ath_hw *ah,
  83 +                                    struct ath9k_channel *chan,
  84 +                                    u8 rxchainmask, bool longcal)
  85  {
  86         return ath9k_hw_ops(ah)->calibrate(ah, chan, rxchainmask, longcal);
  87  }
  88 --- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
  89 +++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
  90 @@ -121,13 +121,12 @@ static bool ar9003_hw_per_calibration(st
  91         return iscaldone;
  92  }
  93
  94 -static bool ar9003_hw_calibrate(struct ath_hw *ah,
  95 -                               struct ath9k_channel *chan,
  96 -                               u8 rxchainmask,
  97 -                               bool longcal)
  98 +static int ar9003_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
  99 +                              u8 rxchainmask, bool longcal)
 100  {
 101         bool iscaldone = true;
 102         struct ath9k_cal_list *currCal = ah->cal_list_curr;
 103 +       int ret;
 104
 105         /*
 106          * For given calibration:
 107 @@ -163,7 +162,9 @@ static bool ar9003_hw_calibrate(struct a
 108                  * NF is slow time-variant, so it is OK to use a historical
 109                  * value.
 110                  */
 111 -               ath9k_hw_loadnf(ah, ah->curchan);
 112 +               ret = ath9k_hw_loadnf(ah, ah->curchan);
 113 +               if (ret < 0)
 114 +                       return ret;
 115
 116                 /* start NF calibration, without updating BB NF register */
 117                 ath9k_hw_start_nfcal(ah, false);
 118 --- a/drivers/net/wireless/ath/ath9k/hw.h
 119 +++ b/drivers/net/wireless/ath/ath9k/hw.h
 120 @@ -696,10 +696,8 @@ struct ath_hw_ops {
 121                                      bool power_off);
 122         void (*rx_enable)(struct ath_hw *ah);
 123         void (*set_desc_link)(void *ds, u32 link);
 124 -       bool (*calibrate)(struct ath_hw *ah,
 125 -                         struct ath9k_channel *chan,
 126 -                         u8 rxchainmask,
 127 -                         bool longcal);
 128 +       int (*calibrate)(struct ath_hw *ah, struct ath9k_channel *chan,
 129 +                        u8 rxchainmask, bool longcal);
 130         bool (*get_isr)(struct ath_hw *ah, enum ath9k_int *masked,
 131                         u32 *sync_cause_p);
 132         void (*set_txdesc)(struct ath_hw *ah, void *ds,
 133 --- a/drivers/net/wireless/ath/ath9k/debug.h
 134 +++ b/drivers/net/wireless/ath/ath9k/debug.h
 135 @@ -49,6 +49,7 @@ enum ath_reset_type {
 136         RESET_TYPE_MAC_HANG,
 137         RESET_TYPE_BEACON_STUCK,
 138         RESET_TYPE_MCI,
 139 +       RESET_TYPE_CALIBRATION,
 140         __RESET_TYPE_MAX
 141  };
 142
 143 --- a/drivers/net/wireless/ath/ath9k/debug.c
 144 +++ b/drivers/net/wireless/ath/ath9k/debug.c
 145 @@ -863,6 +863,7 @@ static ssize_t read_file_reset(struct fi
 146                 [RESET_TYPE_MAC_HANG] = "MAC Hang",
 147                 [RESET_TYPE_BEACON_STUCK] = "Stuck Beacon",
 148                 [RESET_TYPE_MCI] = "MCI Reset",
 149 +               [RESET_TYPE_CALIBRATION] = "Calibration error",
 150         };
 151         char buf[512];
 152         unsigned int len = 0;
 153 --- a/drivers/net/wireless/ath/ath9k/link.c
 154 +++ b/drivers/net/wireless/ath/ath9k/link.c
 155 @@ -371,9 +371,14 @@ void ath_ani_calibrate(unsigned long dat
 156
 157         /* Perform calibration if necessary */
 158         if (longcal || shortcal) {
 159 -               common->ani.caldone =
 160 -                       ath9k_hw_calibrate(ah, ah->curchan,
 161 -                                          ah->rxchainmask, longcal);
 162 +               int ret = ath9k_hw_calibrate(ah, ah->curchan, ah->rxchainmask,
 163 +                                            longcal);
 164 +               if (ret < 0) {
 165 +                       ath9k_queue_reset(sc, RESET_TYPE_CALIBRATION);
 166 +                       return;
 167 +               }
 168 +
 169 +               common->ani.caldone = ret;
 170         }
 171
 172         ath_dbg(common, ANI,