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path: root/drivers/net/wireless/ath/ath9k/init.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/init.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/init.c116
1 files changed, 40 insertions, 76 deletions
diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index f69ef5d48c7b..4b1abc7da98c 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -20,6 +20,7 @@
#include <linux/slab.h>
#include <linux/ath9k_platform.h>
#include <linux/module.h>
+#include <linux/relay.h>
#include "ath9k.h"
@@ -302,16 +303,15 @@ static void setup_ht_cap(struct ath_softc *sc,
ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
}
-static int ath9k_reg_notifier(struct wiphy *wiphy,
- struct regulatory_request *request)
+static void ath9k_reg_notifier(struct wiphy *wiphy,
+ struct regulatory_request *request)
{
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
struct ath_softc *sc = hw->priv;
struct ath_hw *ah = sc->sc_ah;
struct ath_regulatory *reg = ath9k_hw_regulatory(ah);
- int ret;
- ret = ath_reg_notifier_apply(wiphy, request, reg);
+ ath_reg_notifier_apply(wiphy, request, reg);
/* Set tx power */
if (ah->curchan) {
@@ -321,8 +321,6 @@ static int ath9k_reg_notifier(struct wiphy *wiphy,
sc->curtxpow = ath9k_hw_regulatory(ah)->power_limit;
ath9k_ps_restore(sc);
}
-
- return ret;
}
/*
@@ -337,7 +335,7 @@ int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
u8 *ds;
struct ath_buf *bf;
- int i, bsize, error, desc_len;
+ int i, bsize, desc_len;
ath_dbg(common, CONFIG, "%s DMA: %u buffers %u desc/buf\n",
name, nbuf, ndesc);
@@ -353,8 +351,7 @@ int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
if ((desc_len % 4) != 0) {
ath_err(common, "ath_desc not DWORD aligned\n");
BUG_ON((desc_len % 4) != 0);
- error = -ENOMEM;
- goto fail;
+ return -ENOMEM;
}
dd->dd_desc_len = desc_len * nbuf * ndesc;
@@ -378,12 +375,11 @@ int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
}
/* allocate descriptors */
- dd->dd_desc = dma_alloc_coherent(sc->dev, dd->dd_desc_len,
- &dd->dd_desc_paddr, GFP_KERNEL);
- if (dd->dd_desc == NULL) {
- error = -ENOMEM;
- goto fail;
- }
+ dd->dd_desc = dmam_alloc_coherent(sc->dev, dd->dd_desc_len,
+ &dd->dd_desc_paddr, GFP_KERNEL);
+ if (!dd->dd_desc)
+ return -ENOMEM;
+
ds = (u8 *) dd->dd_desc;
ath_dbg(common, CONFIG, "%s DMA map: %p (%u) -> %llx (%u)\n",
name, ds, (u32) dd->dd_desc_len,
@@ -391,12 +387,9 @@ int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
/* allocate buffers */
bsize = sizeof(struct ath_buf) * nbuf;
- bf = kzalloc(bsize, GFP_KERNEL);
- if (bf == NULL) {
- error = -ENOMEM;
- goto fail2;
- }
- dd->dd_bufptr = bf;
+ bf = devm_kzalloc(sc->dev, bsize, GFP_KERNEL);
+ if (!bf)
+ return -ENOMEM;
for (i = 0; i < nbuf; i++, bf++, ds += (desc_len * ndesc)) {
bf->bf_desc = ds;
@@ -422,12 +415,6 @@ int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
list_add_tail(&bf->list, head);
}
return 0;
-fail2:
- dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
- dd->dd_desc_paddr);
-fail:
- memset(dd, 0, sizeof(*dd));
- return error;
}
static int ath9k_init_queues(struct ath_softc *sc)
@@ -457,11 +444,13 @@ static int ath9k_init_channels_rates(struct ath_softc *sc)
ATH9K_NUM_CHANNELS);
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) {
- channels = kmemdup(ath9k_2ghz_chantable,
+ channels = devm_kzalloc(sc->dev,
sizeof(ath9k_2ghz_chantable), GFP_KERNEL);
if (!channels)
return -ENOMEM;
+ memcpy(channels, ath9k_2ghz_chantable,
+ sizeof(ath9k_2ghz_chantable));
sc->sbands[IEEE80211_BAND_2GHZ].channels = channels;
sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
sc->sbands[IEEE80211_BAND_2GHZ].n_channels =
@@ -472,14 +461,13 @@ static int ath9k_init_channels_rates(struct ath_softc *sc)
}
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) {
- channels = kmemdup(ath9k_5ghz_chantable,
+ channels = devm_kzalloc(sc->dev,
sizeof(ath9k_5ghz_chantable), GFP_KERNEL);
- if (!channels) {
- if (sc->sbands[IEEE80211_BAND_2GHZ].channels)
- kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels);
+ if (!channels)
return -ENOMEM;
- }
+ memcpy(channels, ath9k_5ghz_chantable,
+ sizeof(ath9k_5ghz_chantable));
sc->sbands[IEEE80211_BAND_5GHZ].channels = channels;
sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
sc->sbands[IEEE80211_BAND_5GHZ].n_channels =
@@ -565,10 +553,11 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
int ret = 0, i;
int csz = 0;
- ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL);
+ ah = devm_kzalloc(sc->dev, sizeof(struct ath_hw), GFP_KERNEL);
if (!ah)
return -ENOMEM;
+ ah->dev = sc->dev;
ah->hw = sc->hw;
ah->hw_version.devid = devid;
ah->reg_ops.read = ath9k_ioread32;
@@ -636,7 +625,7 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
if (pdata && pdata->eeprom_name) {
ret = ath9k_eeprom_request(sc, pdata->eeprom_name);
if (ret)
- goto err_eeprom;
+ return ret;
}
/* Initializes the hardware for all supported chipsets */
@@ -676,10 +665,6 @@ err_queues:
ath9k_hw_deinit(ah);
err_hw:
ath9k_eeprom_release(sc);
-err_eeprom:
- kfree(ah);
- sc->sc_ah = NULL;
-
return ret;
}
@@ -844,8 +829,8 @@ int ath9k_init_device(u16 devid, struct ath_softc *sc,
/* Bring up device */
error = ath9k_init_softc(devid, sc, bus_ops);
- if (error != 0)
- goto error_init;
+ if (error)
+ return error;
ah = sc->sc_ah;
common = ath9k_hw_common(ah);
@@ -855,19 +840,19 @@ int ath9k_init_device(u16 devid, struct ath_softc *sc,
error = ath_regd_init(&common->regulatory, sc->hw->wiphy,
ath9k_reg_notifier);
if (error)
- goto error_regd;
+ goto deinit;
reg = &common->regulatory;
/* Setup TX DMA */
error = ath_tx_init(sc, ATH_TXBUF);
if (error != 0)
- goto error_tx;
+ goto deinit;
/* Setup RX DMA */
error = ath_rx_init(sc, ATH_RXBUF);
if (error != 0)
- goto error_rx;
+ goto deinit;
ath9k_init_txpower_limits(sc);
@@ -881,19 +866,19 @@ int ath9k_init_device(u16 devid, struct ath_softc *sc,
/* Register with mac80211 */
error = ieee80211_register_hw(hw);
if (error)
- goto error_register;
+ goto rx_cleanup;
error = ath9k_init_debug(ah);
if (error) {
ath_err(common, "Unable to create debugfs files\n");
- goto error_world;
+ goto unregister;
}
/* Handle world regulatory */
if (!ath_is_world_regd(reg)) {
error = regulatory_hint(hw->wiphy, reg->alpha2);
if (error)
- goto error_world;
+ goto unregister;
}
ath_init_leds(sc);
@@ -901,17 +886,12 @@ int ath9k_init_device(u16 devid, struct ath_softc *sc,
return 0;
-error_world:
+unregister:
ieee80211_unregister_hw(hw);
-error_register:
+rx_cleanup:
ath_rx_cleanup(sc);
-error_rx:
- ath_tx_cleanup(sc);
-error_tx:
- /* Nothing */
-error_regd:
+deinit:
ath9k_deinit_softc(sc);
-error_init:
return error;
}
@@ -923,12 +903,6 @@ static void ath9k_deinit_softc(struct ath_softc *sc)
{
int i = 0;
- if (sc->sbands[IEEE80211_BAND_2GHZ].channels)
- kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels);
-
- if (sc->sbands[IEEE80211_BAND_5GHZ].channels)
- kfree(sc->sbands[IEEE80211_BAND_5GHZ].channels);
-
ath9k_deinit_btcoex(sc);
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
@@ -940,8 +914,11 @@ static void ath9k_deinit_softc(struct ath_softc *sc)
sc->dfs_detector->exit(sc->dfs_detector);
ath9k_eeprom_release(sc);
- kfree(sc->sc_ah);
- sc->sc_ah = NULL;
+
+ if (sc->rfs_chan_spec_scan) {
+ relay_close(sc->rfs_chan_spec_scan);
+ sc->rfs_chan_spec_scan = NULL;
+ }
}
void ath9k_deinit_device(struct ath_softc *sc)
@@ -957,22 +934,9 @@ void ath9k_deinit_device(struct ath_softc *sc)
ieee80211_unregister_hw(hw);
ath_rx_cleanup(sc);
- ath_tx_cleanup(sc);
ath9k_deinit_softc(sc);
}
-void ath_descdma_cleanup(struct ath_softc *sc,
- struct ath_descdma *dd,
- struct list_head *head)
-{
- dma_free_coherent(sc->dev, dd->dd_desc_len, dd->dd_desc,
- dd->dd_desc_paddr);
-
- INIT_LIST_HEAD(head);
- kfree(dd->dd_bufptr);
- memset(dd, 0, sizeof(*dd));
-}
-
/************************/
/* Module Hooks */
/************************/
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.