* [PATCH 01/11] rt2800: make rx ampdu_factor depend on number of rx chains
2016-12-19 10:52 [PATCH 00/11] rt2800 patches 19.12.2016 Stanislaw Gruszka
@ 2016-12-19 10:52 ` Stanislaw Gruszka
2016-12-30 12:08 ` Kalle Valo
2016-12-19 10:52 ` [PATCH 02/11] rt2800: don't set ht parameters for non-aggregated frames Stanislaw Gruszka
` (9 subsequent siblings)
10 siblings, 1 reply; 14+ messages in thread
From: Stanislaw Gruszka @ 2016-12-19 10:52 UTC (permalink / raw)
To: linux-wireless; +Cc: Helmut Schaa, Stanislaw Gruszka
Initalize max ampdu_factor supported by us based on rx chains, vendor
driver do the same.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index 2515702..62bb9a6 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -7596,7 +7596,7 @@ static int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
spec->ht.cap |= rx_chains << IEEE80211_HT_CAP_RX_STBC_SHIFT;
- spec->ht.ampdu_factor = 3;
+ spec->ht.ampdu_factor = (rx_chains > 1) ? 3 : 2;
spec->ht.ampdu_density = 4;
spec->ht.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
if (tx_chains != rx_chains) {
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread* Re: [PATCH 01/11] rt2800: make rx ampdu_factor depend on number of rx chains
2016-12-19 10:52 ` [PATCH 01/11] rt2800: make rx ampdu_factor depend on number of rx chains Stanislaw Gruszka
@ 2016-12-30 12:08 ` Kalle Valo
0 siblings, 0 replies; 14+ messages in thread
From: Kalle Valo @ 2016-12-30 12:08 UTC (permalink / raw)
To: Stanislaw Gruszka; +Cc: linux-wireless, Helmut Schaa
Stanislaw Gruszka <sgruszka@redhat.com> writes:
> Initalize max ampdu_factor supported by us based on rx chains, vendor
> driver do the same.
>
> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
When I was applying these patches I did an off by one error with my
patchwork script ('commit 2-12' vs 'commit 1-11') and accidentally
applied an orinoco patch to wireless-drivers-next along with these
rt2800 patches 1-10. I applied patch 11 separately and everything should
be in wireless-drivers-next now (as soon as I push it). But I would
appreciate if you could double check that everything is ok.
Sorry for the mess.
a08b98196a36 rt2800: make rx ampdu_factor depend on number of rx chains
e49abb19d1bf rt2800: don't set ht parameters for non-aggregated frames
a51b89698ccc rt2800: set minimum MPDU and PSDU lengths to sane values
8f03a7c6e7f9 rt2800: set MAX_PSDU len according to remote STAs capabilities
8845254112ac rt2800: rename adjust_freq_offset function
bc0077053948 rt2800: warn if doing VCO recalibration for unknow RF chip
24d42ef3b152 rt2800: perform VCO recalibration for RF5592 chip
d96324703ffa rt2x00: merge agc and vco works with link tuner
eb79a8fe94c8 rt2800: replace mdelay by usleep on vco calibration.
31369c323ba0 rt2800: replace msleep() with usleep_range() on channel switch
--
Kalle Valo
^ permalink raw reply [flat|nested] 14+ messages in thread
* [PATCH 02/11] rt2800: don't set ht parameters for non-aggregated frames
2016-12-19 10:52 [PATCH 00/11] rt2800 patches 19.12.2016 Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 01/11] rt2800: make rx ampdu_factor depend on number of rx chains Stanislaw Gruszka
@ 2016-12-19 10:52 ` Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 03/11] rt2800: set minimum MPDU and PSDU lengths to sane values Stanislaw Gruszka
` (8 subsequent siblings)
10 siblings, 0 replies; 14+ messages in thread
From: Stanislaw Gruszka @ 2016-12-19 10:52 UTC (permalink / raw)
To: linux-wireless; +Cc: Helmut Schaa, Stanislaw Gruszka
Do not set ampdu_density and ba_size for frames without AMPDU bit i.e.
frames that will not be aggregated to AMPDU.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2x00queue.c | 12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c b/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c
index 68b620b..b2364d3 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00queue.c
@@ -306,13 +306,12 @@ static void rt2x00queue_create_tx_descriptor_ht(struct rt2x00_dev *rt2x00dev,
struct ieee80211_tx_rate *txrate = &tx_info->control.rates[0];
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct rt2x00_sta *sta_priv = NULL;
+ u8 density = 0;
if (sta) {
- txdesc->u.ht.mpdu_density =
- sta->ht_cap.ampdu_density;
-
sta_priv = sta_to_rt2x00_sta(sta);
txdesc->u.ht.wcid = sta_priv->wcid;
+ density = sta->ht_cap.ampdu_density;
}
/*
@@ -345,8 +344,6 @@ static void rt2x00queue_create_tx_descriptor_ht(struct rt2x00_dev *rt2x00dev,
return;
}
- txdesc->u.ht.ba_size = 7; /* FIXME: What value is needed? */
-
/*
* Only one STBC stream is supported for now.
*/
@@ -358,8 +355,11 @@ static void rt2x00queue_create_tx_descriptor_ht(struct rt2x00_dev *rt2x00dev,
* frames that are intended to probe a specific tx rate.
*/
if (tx_info->flags & IEEE80211_TX_CTL_AMPDU &&
- !(tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE))
+ !(tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE)) {
__set_bit(ENTRY_TXD_HT_AMPDU, &txdesc->flags);
+ txdesc->u.ht.mpdu_density = density;
+ txdesc->u.ht.ba_size = 7; /* FIXME: What value is needed? */
+ }
/*
* Set 40Mhz mode if necessary (for legacy rates this will
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 03/11] rt2800: set minimum MPDU and PSDU lengths to sane values
2016-12-19 10:52 [PATCH 00/11] rt2800 patches 19.12.2016 Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 01/11] rt2800: make rx ampdu_factor depend on number of rx chains Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 02/11] rt2800: don't set ht parameters for non-aggregated frames Stanislaw Gruszka
@ 2016-12-19 10:52 ` Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 04/11] rt2800: set MAX_PSDU len according to remote STAs capabilities Stanislaw Gruszka
` (7 subsequent siblings)
10 siblings, 0 replies; 14+ messages in thread
From: Stanislaw Gruszka @ 2016-12-19 10:52 UTC (permalink / raw)
To: linux-wireless; +Cc: Helmut Schaa, Stanislaw Gruszka
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index 62bb9a6..ef71722 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -4708,8 +4708,8 @@ static int rt2800_init_registers(struct rt2x00_dev *rt2x00dev)
rt2x00_set_field32(®, MAX_LEN_CFG_MAX_PSDU, 2);
else
rt2x00_set_field32(®, MAX_LEN_CFG_MAX_PSDU, 1);
- rt2x00_set_field32(®, MAX_LEN_CFG_MIN_PSDU, 0);
- rt2x00_set_field32(®, MAX_LEN_CFG_MIN_MPDU, 0);
+ rt2x00_set_field32(®, MAX_LEN_CFG_MIN_PSDU, 10);
+ rt2x00_set_field32(®, MAX_LEN_CFG_MIN_MPDU, 10);
rt2800_register_write(rt2x00dev, MAX_LEN_CFG, reg);
rt2800_register_read(rt2x00dev, LED_CFG, ®);
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 04/11] rt2800: set MAX_PSDU len according to remote STAs capabilities
2016-12-19 10:52 [PATCH 00/11] rt2800 patches 19.12.2016 Stanislaw Gruszka
` (2 preceding siblings ...)
2016-12-19 10:52 ` [PATCH 03/11] rt2800: set minimum MPDU and PSDU lengths to sane values Stanislaw Gruszka
@ 2016-12-19 10:52 ` Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 05/11] rt2800: rename adjust_freq_offset function Stanislaw Gruszka
` (6 subsequent siblings)
10 siblings, 0 replies; 14+ messages in thread
From: Stanislaw Gruszka @ 2016-12-19 10:52 UTC (permalink / raw)
To: linux-wireless; +Cc: Helmut Schaa, Stanislaw Gruszka
MAX_LEN_CFG_MAX_PSDU specify maximum transmitted by HW AMPDU length
(0 - 8kB, 1 - 16kB, 2 - 32kB, 3 - 64kB). Set this option according to
remote stations capabilities (based on HT ampdu_factor). However limit
the value based our hardware TX capabilities as some chips can not send
more than 16kB (factor 1). Limit for all chips is currently 32kB
(factor 2), but perhaps for some chips this could be increased
to 64kB by setting drv_data->max_psdu to 3.
Since MAX_LEN_CFG_MAX_PSDU is global setting, on multi stations modes
(AP, IBSS, mesh) we limit according to less capable remote STA. We can
not set bigger value to speed up communication with some stations and
do not break communication with slow stations.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2800.h | 2 +
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 45 ++++++++++++++++++++++--
drivers/net/wireless/ralink/rt2x00/rt2800lib.h | 2 +-
drivers/net/wireless/ralink/rt2x00/rt2x00.h | 2 +-
drivers/net/wireless/ralink/rt2x00/rt2x00mac.c | 3 +-
5 files changed, 47 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800.h b/drivers/net/wireless/ralink/rt2x00/rt2800.h
index 95c1d7c..ec622a0 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800.h
@@ -2979,7 +2979,9 @@ struct rt2800_drv_data {
u8 bbp26;
u8 txmixer_gain_24g;
u8 txmixer_gain_5g;
+ u8 max_psdu;
unsigned int tbtt_tick;
+ unsigned int ampdu_factor_cnt[4];
DECLARE_BITMAP(sta_ids, STA_IDS_SIZE);
};
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index ef71722..a6f3f78 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -1418,6 +1418,23 @@ int rt2800_config_pairwise_key(struct rt2x00_dev *rt2x00dev,
}
EXPORT_SYMBOL_GPL(rt2800_config_pairwise_key);
+static void rt2800_set_max_psdu_len(struct rt2x00_dev *rt2x00dev)
+{
+ u8 i, max_psdu;
+ u32 reg;
+ struct rt2800_drv_data *drv_data = rt2x00dev->drv_data;
+
+ for (i = 0; i < 3; i++)
+ if (drv_data->ampdu_factor_cnt[i] > 0)
+ break;
+
+ max_psdu = min(drv_data->max_psdu, i);
+
+ rt2800_register_read(rt2x00dev, MAX_LEN_CFG, ®);
+ rt2x00_set_field32(®, MAX_LEN_CFG_MAX_PSDU, max_psdu);
+ rt2800_register_write(rt2x00dev, MAX_LEN_CFG, reg);
+}
+
int rt2800_sta_add(struct rt2x00_dev *rt2x00dev, struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
@@ -1426,6 +1443,17 @@ int rt2800_sta_add(struct rt2x00_dev *rt2x00dev, struct ieee80211_vif *vif,
struct rt2800_drv_data *drv_data = rt2x00dev->drv_data;
/*
+ * Limit global maximum TX AMPDU length to smallest value of all
+ * connected stations. In AP mode this can be suboptimal, but we
+ * do not have a choice if some connected STA is not capable to
+ * receive the same amount of data like the others.
+ */
+ if (sta->ht_cap.ht_supported) {
+ drv_data->ampdu_factor_cnt[sta->ht_cap.ampdu_factor & 3]++;
+ rt2800_set_max_psdu_len(rt2x00dev);
+ }
+
+ /*
* Search for the first free WCID entry and return the corresponding
* index.
*/
@@ -1457,9 +1485,16 @@ int rt2800_sta_add(struct rt2x00_dev *rt2x00dev, struct ieee80211_vif *vif,
}
EXPORT_SYMBOL_GPL(rt2800_sta_add);
-int rt2800_sta_remove(struct rt2x00_dev *rt2x00dev, int wcid)
+int rt2800_sta_remove(struct rt2x00_dev *rt2x00dev, struct ieee80211_sta *sta)
{
struct rt2800_drv_data *drv_data = rt2x00dev->drv_data;
+ struct rt2x00_sta *sta_priv = sta_to_rt2x00_sta(sta);
+ int wcid = sta_priv->wcid;
+
+ if (sta->ht_cap.ht_supported) {
+ drv_data->ampdu_factor_cnt[sta->ht_cap.ampdu_factor & 3]--;
+ rt2800_set_max_psdu_len(rt2x00dev);
+ }
if (wcid > WCID_END)
return 0;
@@ -4536,6 +4571,7 @@ void rt2800_link_tuner(struct rt2x00_dev *rt2x00dev, struct link_qual *qual,
*/
static int rt2800_init_registers(struct rt2x00_dev *rt2x00dev)
{
+ struct rt2800_drv_data *drv_data = rt2x00dev->drv_data;
u32 reg;
u16 eeprom;
unsigned int i;
@@ -4704,10 +4740,13 @@ static int rt2800_init_registers(struct rt2x00_dev *rt2x00dev)
rt2x00_set_field32(®, MAX_LEN_CFG_MAX_MPDU, AGGREGATION_SIZE);
if (rt2x00_rt_rev_gte(rt2x00dev, RT2872, REV_RT2872E) ||
rt2x00_rt(rt2x00dev, RT2883) ||
- rt2x00_rt_rev_lt(rt2x00dev, RT3070, REV_RT3070E))
+ rt2x00_rt_rev_lt(rt2x00dev, RT3070, REV_RT3070E)) {
+ drv_data->max_psdu = 2;
rt2x00_set_field32(®, MAX_LEN_CFG_MAX_PSDU, 2);
- else
+ } else {
+ drv_data->max_psdu = 1;
rt2x00_set_field32(®, MAX_LEN_CFG_MAX_PSDU, 1);
+ }
rt2x00_set_field32(®, MAX_LEN_CFG_MIN_PSDU, 10);
rt2x00_set_field32(®, MAX_LEN_CFG_MIN_MPDU, 10);
rt2800_register_write(rt2x00dev, MAX_LEN_CFG, reg);
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
index 83f1a44..0a8b4df 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
@@ -183,7 +183,7 @@ int rt2800_config_pairwise_key(struct rt2x00_dev *rt2x00dev,
struct ieee80211_key_conf *key);
int rt2800_sta_add(struct rt2x00_dev *rt2x00dev, struct ieee80211_vif *vif,
struct ieee80211_sta *sta);
-int rt2800_sta_remove(struct rt2x00_dev *rt2x00dev, int wcid);
+int rt2800_sta_remove(struct rt2x00_dev *rt2x00dev, struct ieee80211_sta *sta);
void rt2800_config_filter(struct rt2x00_dev *rt2x00dev,
const unsigned int filter_flags);
void rt2800_config_intf(struct rt2x00_dev *rt2x00dev, struct rt2x00_intf *intf,
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00.h b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
index f68d492..01ce8a4 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
@@ -627,7 +627,7 @@ struct rt2x00lib_ops {
struct ieee80211_vif *vif,
struct ieee80211_sta *sta);
int (*sta_remove) (struct rt2x00_dev *rt2x00dev,
- int wcid);
+ struct ieee80211_sta *sta);
};
/*
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
index 13da95a..d4b50fb 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
@@ -539,9 +539,8 @@ int rt2x00mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct rt2x00_dev *rt2x00dev = hw->priv;
- struct rt2x00_sta *sta_priv = sta_to_rt2x00_sta(sta);
- return rt2x00dev->ops->lib->sta_remove(rt2x00dev, sta_priv->wcid);
+ return rt2x00dev->ops->lib->sta_remove(rt2x00dev, sta);
}
EXPORT_SYMBOL_GPL(rt2x00mac_sta_remove);
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 05/11] rt2800: rename adjust_freq_offset function
2016-12-19 10:52 [PATCH 00/11] rt2800 patches 19.12.2016 Stanislaw Gruszka
` (3 preceding siblings ...)
2016-12-19 10:52 ` [PATCH 04/11] rt2800: set MAX_PSDU len according to remote STAs capabilities Stanislaw Gruszka
@ 2016-12-19 10:52 ` Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 06/11] rt2800: warn if doing VCO recalibration for unknow RF chip Stanislaw Gruszka
` (5 subsequent siblings)
10 siblings, 0 replies; 14+ messages in thread
From: Stanislaw Gruszka @ 2016-12-19 10:52 UTC (permalink / raw)
To: linux-wireless; +Cc: Helmut Schaa, Stanislaw Gruszka
We have different modes of adjusting freq offset on different chips.
Call current adjustment similarly like vendor driver - mode1 .
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 16 ++++++++--------
1 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index a6f3f78..65f20ca 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -1939,7 +1939,7 @@ static void rt2800_config_lna_gain(struct rt2x00_dev *rt2x00dev,
#define FREQ_OFFSET_BOUND 0x5f
-static void rt2800_adjust_freq_offset(struct rt2x00_dev *rt2x00dev)
+static void rt2800_freq_cal_mode1(struct rt2x00_dev *rt2x00dev)
{
u8 freq_offset, prev_freq_offset;
u8 rfcsr, prev_rfcsr;
@@ -2415,7 +2415,7 @@ static void rt2800_config_channel_rf3053(struct rt2x00_dev *rt2x00dev,
}
rt2800_rfcsr_write(rt2x00dev, 1, rfcsr);
- rt2800_adjust_freq_offset(rt2x00dev);
+ rt2800_freq_cal_mode1(rt2x00dev);
if (conf_is_ht40(conf)) {
txrx_agc_fc = rt2x00_get_field8(drv_data->calibration_bw40,
@@ -2605,7 +2605,7 @@ static void rt2800_config_channel_rf3290(struct rt2x00_dev *rt2x00dev,
rt2x00_set_field8(&rfcsr, RFCSR49_TX, info->default_power1);
rt2800_rfcsr_write(rt2x00dev, 49, rfcsr);
- rt2800_adjust_freq_offset(rt2x00dev);
+ rt2800_freq_cal_mode1(rt2x00dev);
if (rf->channel <= 14) {
if (rf->channel == 6)
@@ -2646,7 +2646,7 @@ static void rt2800_config_channel_rf3322(struct rt2x00_dev *rt2x00dev,
else
rt2800_rfcsr_write(rt2x00dev, 48, info->default_power2);
- rt2800_adjust_freq_offset(rt2x00dev);
+ rt2800_freq_cal_mode1(rt2x00dev);
rt2800_rfcsr_read(rt2x00dev, 1, &rfcsr);
rt2x00_set_field8(&rfcsr, RFCSR1_RX0_PD, 1);
@@ -2711,7 +2711,7 @@ static void rt2800_config_channel_rf53xx(struct rt2x00_dev *rt2x00dev,
rt2x00_set_field8(&rfcsr, RFCSR1_TX0_PD, 1);
rt2800_rfcsr_write(rt2x00dev, 1, rfcsr);
- rt2800_adjust_freq_offset(rt2x00dev);
+ rt2800_freq_cal_mode1(rt2x00dev);
if (rf->channel <= 14) {
int idx = rf->channel-1;
@@ -3006,7 +3006,7 @@ static void rt2800_config_channel_rf55xx(struct rt2x00_dev *rt2x00dev,
}
/* TODO proper frequency adjustment */
- rt2800_adjust_freq_offset(rt2x00dev);
+ rt2800_freq_cal_mode1(rt2x00dev);
/* TODO merge with others */
rt2800_rfcsr_read(rt2x00dev, 3, &rfcsr);
@@ -6454,7 +6454,7 @@ static void rt2800_init_rfcsr_3593(struct rt2x00_dev *rt2x00dev)
rt2x00_set_field8(&rfcsr, RFCSR2_RESCAL_EN, 1);
rt2800_rfcsr_write(rt2x00dev, 2, rfcsr);
- rt2800_adjust_freq_offset(rt2x00dev);
+ rt2800_freq_cal_mode1(rt2x00dev);
rt2800_rfcsr_read(rt2x00dev, 18, &rfcsr);
rt2x00_set_field8(&rfcsr, RFCSR18_XO_TUNE_BYPASS, 1);
@@ -6680,7 +6680,7 @@ static void rt2800_init_rfcsr_5592(struct rt2x00_dev *rt2x00dev)
rt2800_rfcsr_write(rt2x00dev, 2, 0x80);
msleep(1);
- rt2800_adjust_freq_offset(rt2x00dev);
+ rt2800_freq_cal_mode1(rt2x00dev);
/* Enable DC filter */
if (rt2x00_rt_rev_gte(rt2x00dev, RT5592, REV_RT5592C))
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 06/11] rt2800: warn if doing VCO recalibration for unknow RF chip
2016-12-19 10:52 [PATCH 00/11] rt2800 patches 19.12.2016 Stanislaw Gruszka
` (4 preceding siblings ...)
2016-12-19 10:52 ` [PATCH 05/11] rt2800: rename adjust_freq_offset function Stanislaw Gruszka
@ 2016-12-19 10:52 ` Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 07/11] rt2800: perform VCO recalibration for RF5592 chip Stanislaw Gruszka
` (4 subsequent siblings)
10 siblings, 0 replies; 14+ messages in thread
From: Stanislaw Gruszka @ 2016-12-19 10:52 UTC (permalink / raw)
To: linux-wireless; +Cc: Helmut Schaa, Stanislaw Gruszka
Since we reset TX_PIN_CFG register, we have to finish recalibration.
Warn if this is not possible.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index 65f20ca..5ceb006 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -4346,6 +4346,8 @@ void rt2800_vco_calibration(struct rt2x00_dev *rt2x00dev)
rt2800_rfcsr_write(rt2x00dev, 3, rfcsr);
break;
default:
+ WARN_ONCE(1, "Not supported RF chipet %x for VCO recalibration",
+ rt2x00dev->chip.rf);
return;
}
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 07/11] rt2800: perform VCO recalibration for RF5592 chip
2016-12-19 10:52 [PATCH 00/11] rt2800 patches 19.12.2016 Stanislaw Gruszka
` (5 preceding siblings ...)
2016-12-19 10:52 ` [PATCH 06/11] rt2800: warn if doing VCO recalibration for unknow RF chip Stanislaw Gruszka
@ 2016-12-19 10:52 ` Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 08/11] rt2x00: merge agc and vco works with link tuner Stanislaw Gruszka
` (3 subsequent siblings)
10 siblings, 0 replies; 14+ messages in thread
From: Stanislaw Gruszka @ 2016-12-19 10:52 UTC (permalink / raw)
To: linux-wireless; +Cc: Helmut Schaa, Stanislaw Gruszka
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index 5ceb006..615eaf8 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -4341,6 +4341,7 @@ void rt2800_vco_calibration(struct rt2x00_dev *rt2x00dev)
case RF5372:
case RF5390:
case RF5392:
+ case RF5592:
rt2800_rfcsr_read(rt2x00dev, 3, &rfcsr);
rt2x00_set_field8(&rfcsr, RFCSR3_VCOCAL_EN, 1);
rt2800_rfcsr_write(rt2x00dev, 3, rfcsr);
@@ -7719,6 +7720,7 @@ static int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
case RF5372:
case RF5390:
case RF5392:
+ case RF5592:
__set_bit(CAPABILITY_VCO_RECALIBRATION, &rt2x00dev->cap_flags);
break;
}
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 08/11] rt2x00: merge agc and vco works with link tuner
2016-12-19 10:52 [PATCH 00/11] rt2800 patches 19.12.2016 Stanislaw Gruszka
` (6 preceding siblings ...)
2016-12-19 10:52 ` [PATCH 07/11] rt2800: perform VCO recalibration for RF5592 chip Stanislaw Gruszka
@ 2016-12-19 10:52 ` Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 09/11] rt2800: replace mdelay by usleep on vco calibration Stanislaw Gruszka
` (2 subsequent siblings)
10 siblings, 0 replies; 14+ messages in thread
From: Stanislaw Gruszka @ 2016-12-19 10:52 UTC (permalink / raw)
To: linux-wireless; +Cc: Helmut Schaa, Stanislaw Gruszka
We need to perform different actions (AGC and VCO calibrations and VGC
tuning) periodically at different intervals. We don't need separate
works for those, we can use link tuner work and just check for proper
interval on it.
This fixes performing AGC and VCO calibration when scanning on STA
mode. We need to be on-channel to perform those calibrations.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2x00dev.c | 6 -
drivers/net/wireless/ralink/rt2x00/rt2x00lib.h | 31 +-----
drivers/net/wireless/ralink/rt2x00/rt2x00link.c | 127 ++++++-----------------
3 files changed, 36 insertions(+), 128 deletions(-)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
index 4e0c565..550eaf1 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
@@ -85,9 +85,6 @@ int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
*/
rt2x00queue_start_queues(rt2x00dev);
rt2x00link_start_tuner(rt2x00dev);
- rt2x00link_start_agc(rt2x00dev);
- if (rt2x00_has_cap_vco_recalibration(rt2x00dev))
- rt2x00link_start_vcocal(rt2x00dev);
/*
* Start watchdog monitoring.
@@ -110,9 +107,6 @@ void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev)
/*
* Stop all queues
*/
- rt2x00link_stop_agc(rt2x00dev);
- if (rt2x00_has_cap_vco_recalibration(rt2x00dev))
- rt2x00link_stop_vcocal(rt2x00dev);
rt2x00link_stop_tuner(rt2x00dev);
rt2x00queue_stop_queues(rt2x00dev);
rt2x00queue_flush_queues(rt2x00dev, true);
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00lib.h b/drivers/net/wireless/ralink/rt2x00/rt2x00lib.h
index fb7c349..9ddc168 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00lib.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00lib.h
@@ -29,9 +29,10 @@
* Interval defines
*/
#define WATCHDOG_INTERVAL round_jiffies_relative(HZ)
-#define LINK_TUNE_INTERVAL round_jiffies_relative(HZ)
-#define AGC_INTERVAL round_jiffies_relative(4 * HZ)
-#define VCO_INTERVAL round_jiffies_relative(10 * HZ) /* 10 sec */
+#define LINK_TUNE_SECONDS 1
+#define LINK_TUNE_INTERVAL round_jiffies_relative(LINK_TUNE_SECONDS * HZ)
+#define AGC_SECONDS 4
+#define VCO_SECONDS 10
/*
* rt2x00_rate: Per rate device information
@@ -271,30 +272,6 @@ void rt2x00link_update_stats(struct rt2x00_dev *rt2x00dev,
void rt2x00link_stop_watchdog(struct rt2x00_dev *rt2x00dev);
/**
- * rt2x00link_start_agc - Start periodic gain calibration
- * @rt2x00dev: Pointer to &struct rt2x00_dev.
- */
-void rt2x00link_start_agc(struct rt2x00_dev *rt2x00dev);
-
-/**
- * rt2x00link_start_vcocal - Start periodic VCO calibration
- * @rt2x00dev: Pointer to &struct rt2x00_dev.
- */
-void rt2x00link_start_vcocal(struct rt2x00_dev *rt2x00dev);
-
-/**
- * rt2x00link_stop_agc - Stop periodic gain calibration
- * @rt2x00dev: Pointer to &struct rt2x00_dev.
- */
-void rt2x00link_stop_agc(struct rt2x00_dev *rt2x00dev);
-
-/**
- * rt2x00link_stop_vcocal - Stop periodic VCO calibration
- * @rt2x00dev: Pointer to &struct rt2x00_dev.
- */
-void rt2x00link_stop_vcocal(struct rt2x00_dev *rt2x00dev);
-
-/**
* rt2x00link_register - Initialize link tuning & watchdog functionality
* @rt2x00dev: Pointer to &struct rt2x00_dev.
*
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00link.c b/drivers/net/wireless/ralink/rt2x00/rt2x00link.c
index 017188e..73cbf23 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00link.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00link.c
@@ -233,15 +233,13 @@ void rt2x00link_start_tuner(struct rt2x00_dev *rt2x00dev)
struct link *link = &rt2x00dev->link;
/*
- * Link tuning should only be performed when
- * an active sta interface exists. AP interfaces
- * don't need link tuning and monitor mode interfaces
- * should never have to work with link tuners.
+ * Single monitor mode interfaces should never have
+ * work with link tuners.
*/
- if (!rt2x00dev->intf_sta_count)
+ if (!rt2x00dev->intf_ap_count && !rt2x00dev->intf_sta_count)
return;
- /**
+ /*
* While scanning, link tuning is disabled. By default
* the most sensitive settings will be used to make sure
* that all beacons and probe responses will be received
@@ -308,22 +306,11 @@ static void rt2x00link_reset_qual(struct rt2x00_dev *rt2x00dev)
qual->tx_failed = 0;
}
-static void rt2x00link_tuner(struct work_struct *work)
+static void rt2x00link_tuner_sta(struct rt2x00_dev *rt2x00dev, struct link *link)
{
- struct rt2x00_dev *rt2x00dev =
- container_of(work, struct rt2x00_dev, link.work.work);
- struct link *link = &rt2x00dev->link;
struct link_qual *qual = &rt2x00dev->link.qual;
/*
- * When the radio is shutting down we should
- * immediately cease all link tuning.
- */
- if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags) ||
- test_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags))
- return;
-
- /*
* Update statistics.
*/
rt2x00dev->ops->lib->link_stats(rt2x00dev, qual);
@@ -360,6 +347,33 @@ static void rt2x00link_tuner(struct work_struct *work)
*/
if (rt2x00lib_antenna_diversity(rt2x00dev))
rt2x00link_reset_qual(rt2x00dev);
+}
+
+static void rt2x00link_tuner(struct work_struct *work)
+{
+ struct rt2x00_dev *rt2x00dev =
+ container_of(work, struct rt2x00_dev, link.work.work);
+ struct link *link = &rt2x00dev->link;
+
+ /*
+ * When the radio is shutting down we should
+ * immediately cease all link tuning.
+ */
+ if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags) ||
+ test_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags))
+ return;
+
+ if (rt2x00dev->intf_sta_count)
+ rt2x00link_tuner_sta(rt2x00dev, link);
+
+ if (rt2x00dev->ops->lib->gain_calibration &&
+ (link->count % (AGC_SECONDS / LINK_TUNE_SECONDS)) == 0)
+ rt2x00dev->ops->lib->gain_calibration(rt2x00dev);
+
+ if (rt2x00dev->ops->lib->vco_calibration &&
+ rt2x00_has_cap_vco_recalibration(rt2x00dev) &&
+ (link->count % (VCO_SECONDS / LINK_TUNE_SECONDS)) == 0)
+ rt2x00dev->ops->lib->vco_calibration(rt2x00dev);
/*
* Increase tuner counter, and reschedule the next link tuner run.
@@ -408,85 +422,8 @@ static void rt2x00link_watchdog(struct work_struct *work)
WATCHDOG_INTERVAL);
}
-void rt2x00link_start_agc(struct rt2x00_dev *rt2x00dev)
-{
- struct link *link = &rt2x00dev->link;
-
- if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) &&
- rt2x00dev->ops->lib->gain_calibration)
- ieee80211_queue_delayed_work(rt2x00dev->hw,
- &link->agc_work,
- AGC_INTERVAL);
-}
-
-void rt2x00link_start_vcocal(struct rt2x00_dev *rt2x00dev)
-{
- struct link *link = &rt2x00dev->link;
-
- if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) &&
- rt2x00dev->ops->lib->vco_calibration)
- ieee80211_queue_delayed_work(rt2x00dev->hw,
- &link->vco_work,
- VCO_INTERVAL);
-}
-
-void rt2x00link_stop_agc(struct rt2x00_dev *rt2x00dev)
-{
- cancel_delayed_work_sync(&rt2x00dev->link.agc_work);
-}
-
-void rt2x00link_stop_vcocal(struct rt2x00_dev *rt2x00dev)
-{
- cancel_delayed_work_sync(&rt2x00dev->link.vco_work);
-}
-
-static void rt2x00link_agc(struct work_struct *work)
-{
- struct rt2x00_dev *rt2x00dev =
- container_of(work, struct rt2x00_dev, link.agc_work.work);
- struct link *link = &rt2x00dev->link;
-
- /*
- * When the radio is shutting down we should
- * immediately cease the watchdog monitoring.
- */
- if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
- return;
-
- rt2x00dev->ops->lib->gain_calibration(rt2x00dev);
-
- if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
- ieee80211_queue_delayed_work(rt2x00dev->hw,
- &link->agc_work,
- AGC_INTERVAL);
-}
-
-static void rt2x00link_vcocal(struct work_struct *work)
-{
- struct rt2x00_dev *rt2x00dev =
- container_of(work, struct rt2x00_dev, link.vco_work.work);
- struct link *link = &rt2x00dev->link;
-
- /*
- * When the radio is shutting down we should
- * immediately cease the VCO calibration.
- */
- if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
- return;
-
- rt2x00dev->ops->lib->vco_calibration(rt2x00dev);
-
- if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags))
- ieee80211_queue_delayed_work(rt2x00dev->hw,
- &link->vco_work,
- VCO_INTERVAL);
-}
-
void rt2x00link_register(struct rt2x00_dev *rt2x00dev)
{
- INIT_DELAYED_WORK(&rt2x00dev->link.agc_work, rt2x00link_agc);
- if (rt2x00_has_cap_vco_recalibration(rt2x00dev))
- INIT_DELAYED_WORK(&rt2x00dev->link.vco_work, rt2x00link_vcocal);
INIT_DELAYED_WORK(&rt2x00dev->link.watchdog_work, rt2x00link_watchdog);
INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00link_tuner);
}
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 09/11] rt2800: replace mdelay by usleep on vco calibration.
2016-12-19 10:52 [PATCH 00/11] rt2800 patches 19.12.2016 Stanislaw Gruszka
` (7 preceding siblings ...)
2016-12-19 10:52 ` [PATCH 08/11] rt2x00: merge agc and vco works with link tuner Stanislaw Gruszka
@ 2016-12-19 10:52 ` Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 10/11] rt2800: replace msleep() with usleep_range() on channel switch Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 11/11] rt2x00: add mutex to synchronize config and link tuner Stanislaw Gruszka
10 siblings, 0 replies; 14+ messages in thread
From: Stanislaw Gruszka @ 2016-12-19 10:52 UTC (permalink / raw)
To: linux-wireless; +Cc: Helmut Schaa, Stanislaw Gruszka
This procedure can sleep, hence mdelay is not needed.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index 615eaf8..29d98e4 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -4352,7 +4352,7 @@ void rt2800_vco_calibration(struct rt2x00_dev *rt2x00dev)
return;
}
- mdelay(1);
+ usleep_range(1000, 1500);
rt2800_register_read(rt2x00dev, TX_PIN_CFG, &tx_pin);
if (rt2x00dev->rf_channel <= 14) {
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 10/11] rt2800: replace msleep() with usleep_range() on channel switch
2016-12-19 10:52 [PATCH 00/11] rt2800 patches 19.12.2016 Stanislaw Gruszka
` (8 preceding siblings ...)
2016-12-19 10:52 ` [PATCH 09/11] rt2800: replace mdelay by usleep on vco calibration Stanislaw Gruszka
@ 2016-12-19 10:52 ` Stanislaw Gruszka
2016-12-19 10:52 ` [PATCH 11/11] rt2x00: add mutex to synchronize config and link tuner Stanislaw Gruszka
10 siblings, 0 replies; 14+ messages in thread
From: Stanislaw Gruszka @ 2016-12-19 10:52 UTC (permalink / raw)
To: linux-wireless; +Cc: Helmut Schaa, Stanislaw Gruszka
msleep(1) can sleep much more time then requested 1ms, this is not good
on channel switch, which we want to be performed fast (i.e. to make scan
faster). Replace msleep() with usleep_range(), which has much smaller
maximum sleeping time boundary.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
index 29d98e4..0220184 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -2110,7 +2110,9 @@ static void rt2800_config_channel_rf3xxx(struct rt2x00_dev *rt2x00dev,
rt2800_rfcsr_read(rt2x00dev, 30, &rfcsr);
rt2x00_set_field8(&rfcsr, RFCSR30_RF_CALIBRATION, 1);
rt2800_rfcsr_write(rt2x00dev, 30, rfcsr);
- msleep(1);
+
+ usleep_range(1000, 1500);
+
rt2x00_set_field8(&rfcsr, RFCSR30_RF_CALIBRATION, 0);
rt2800_rfcsr_write(rt2x00dev, 30, rfcsr);
}
@@ -3442,7 +3444,7 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev,
}
}
- msleep(1);
+ usleep_range(1000, 1500);
/*
* Clear channel statistic counters
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread* [PATCH 11/11] rt2x00: add mutex to synchronize config and link tuner
2016-12-19 10:52 [PATCH 00/11] rt2800 patches 19.12.2016 Stanislaw Gruszka
` (9 preceding siblings ...)
2016-12-19 10:52 ` [PATCH 10/11] rt2800: replace msleep() with usleep_range() on channel switch Stanislaw Gruszka
@ 2016-12-19 10:52 ` Stanislaw Gruszka
2016-12-30 12:04 ` [11/11] " Kalle Valo
10 siblings, 1 reply; 14+ messages in thread
From: Stanislaw Gruszka @ 2016-12-19 10:52 UTC (permalink / raw)
To: linux-wireless; +Cc: Helmut Schaa, Stanislaw Gruszka
Do not perform mac80211 config and link_tuner at the same time,
this can possibly result in wrong RF or BBP configuration.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
---
drivers/net/wireless/ralink/rt2x00/rt2x00.h | 4 ++++
drivers/net/wireless/ralink/rt2x00/rt2x00dev.c | 1 +
drivers/net/wireless/ralink/rt2x00/rt2x00link.c | 5 +++++
drivers/net/wireless/ralink/rt2x00/rt2x00mac.c | 5 +++++
4 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00.h b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
index 01ce8a4..60dd4ac 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
@@ -834,6 +834,10 @@ struct rt2x00_dev {
struct mutex csr_mutex;
/*
+ * Mutex to synchronize config and link tuner.
+ */
+ struct mutex conf_mutex;
+ /*
* Current packet filter configuration for the device.
* This contains all currently active FIF_* flags send
* to us by mac80211 during configure_filter().
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
index 550eaf1..e464bdc 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
@@ -1296,6 +1296,7 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
spin_lock_init(&rt2x00dev->irqmask_lock);
mutex_init(&rt2x00dev->csr_mutex);
+ mutex_init(&rt2x00dev->conf_mutex);
INIT_LIST_HEAD(&rt2x00dev->bar_list);
spin_lock_init(&rt2x00dev->bar_list_lock);
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00link.c b/drivers/net/wireless/ralink/rt2x00/rt2x00link.c
index 73cbf23..2010a77 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00link.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00link.c
@@ -363,6 +363,9 @@ static void rt2x00link_tuner(struct work_struct *work)
test_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags))
return;
+ /* Do not race with rt2x00mac_config(). */
+ mutex_lock(&rt2x00dev->conf_mutex);
+
if (rt2x00dev->intf_sta_count)
rt2x00link_tuner_sta(rt2x00dev, link);
@@ -375,6 +378,8 @@ static void rt2x00link_tuner(struct work_struct *work)
(link->count % (VCO_SECONDS / LINK_TUNE_SECONDS)) == 0)
rt2x00dev->ops->lib->vco_calibration(rt2x00dev);
+ mutex_unlock(&rt2x00dev->conf_mutex);
+
/*
* Increase tuner counter, and reschedule the next link tuner run.
*/
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
index d4b50fb..3cc1384 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c
@@ -320,6 +320,9 @@ int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed)
*/
rt2x00queue_stop_queue(rt2x00dev->rx);
+ /* Do not race with with link tuner. */
+ mutex_lock(&rt2x00dev->conf_mutex);
+
/*
* When we've just turned on the radio, we want to reprogram
* everything to ensure a consistent state
@@ -335,6 +338,8 @@ int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed)
*/
rt2x00lib_config_antenna(rt2x00dev, rt2x00dev->default_ant);
+ mutex_unlock(&rt2x00dev->conf_mutex);
+
/* Turn RX back on */
rt2x00queue_start_queue(rt2x00dev->rx);
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread