From 86e09287e4f8c81831b4d4118a48597565f0d21b Mon Sep 17 00:00:00 2001 From: Alexander Holler Date: Mon, 22 Nov 2010 21:09:01 +0100 Subject: Bluetooth: ath3k: reduce memory usage There is no need to hold the firmware in memory. Signed-off-by: Alexander Holler Signed-off-by: Gustavo F. Padovan --- drivers/bluetooth/ath3k.c | 75 +++++++++++++---------------------------------- 1 file changed, 20 insertions(+), 55 deletions(-) (limited to 'drivers') diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c index 949ed09c6361..a126e614601f 100644 --- a/drivers/bluetooth/ath3k.c +++ b/drivers/bluetooth/ath3k.c @@ -47,46 +47,40 @@ MODULE_DEVICE_TABLE(usb, ath3k_table); #define USB_REQ_DFU_DNLOAD 1 #define BULK_SIZE 4096 -struct ath3k_data { - struct usb_device *udev; - u8 *fw_data; - u32 fw_size; - u32 fw_sent; -}; - -static int ath3k_load_firmware(struct ath3k_data *data, - unsigned char *firmware, - int count) +static int ath3k_load_firmware(struct usb_device *udev, + const struct firmware *firmware) { u8 *send_buf; int err, pipe, len, size, sent = 0; + int count = firmware->size; - BT_DBG("ath3k %p udev %p", data, data->udev); + BT_DBG("udev %p", udev); - pipe = usb_sndctrlpipe(data->udev, 0); + pipe = usb_sndctrlpipe(udev, 0); - if ((usb_control_msg(data->udev, pipe, + send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC); + if (!send_buf) { + BT_ERR("Can't allocate memory chunk for firmware"); + return -ENOMEM; + } + + memcpy(send_buf, firmware->data, 20); + if ((err = usb_control_msg(udev, pipe, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR, 0, 0, - firmware, 20, USB_CTRL_SET_TIMEOUT)) < 0) { + send_buf, 20, USB_CTRL_SET_TIMEOUT)) < 0) { BT_ERR("Can't change to loading configuration err"); - return -EBUSY; + goto error; } sent += 20; count -= 20; - send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC); - if (!send_buf) { - BT_ERR("Can't allocate memory chunk for firmware"); - return -ENOMEM; - } - while (count) { size = min_t(uint, count, BULK_SIZE); - pipe = usb_sndbulkpipe(data->udev, 0x02); - memcpy(send_buf, firmware + sent, size); + pipe = usb_sndbulkpipe(udev, 0x02); + memcpy(send_buf, firmware->data + sent, size); - err = usb_bulk_msg(data->udev, pipe, send_buf, size, + err = usb_bulk_msg(udev, pipe, send_buf, size, &len, 3000); if (err || (len != size)) { @@ -112,57 +106,28 @@ static int ath3k_probe(struct usb_interface *intf, { const struct firmware *firmware; struct usb_device *udev = interface_to_usbdev(intf); - struct ath3k_data *data; - int size; BT_DBG("intf %p id %p", intf, id); if (intf->cur_altsetting->desc.bInterfaceNumber != 0) return -ENODEV; - data = kzalloc(sizeof(*data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - data->udev = udev; - if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) { - kfree(data); return -EIO; } - size = max_t(uint, firmware->size, 4096); - data->fw_data = kmalloc(size, GFP_KERNEL); - if (!data->fw_data) { + if (ath3k_load_firmware(udev, firmware)) { release_firmware(firmware); - kfree(data); - return -ENOMEM; - } - - memcpy(data->fw_data, firmware->data, firmware->size); - data->fw_size = firmware->size; - data->fw_sent = 0; - release_firmware(firmware); - - usb_set_intfdata(intf, data); - if (ath3k_load_firmware(data, data->fw_data, data->fw_size)) { - usb_set_intfdata(intf, NULL); - kfree(data->fw_data); - kfree(data); return -EIO; } + release_firmware(firmware); return 0; } static void ath3k_disconnect(struct usb_interface *intf) { - struct ath3k_data *data = usb_get_intfdata(intf); - BT_DBG("ath3k_disconnect intf %p", intf); - - kfree(data->fw_data); - kfree(data); } static struct usb_driver ath3k_driver = { -- cgit v1.2.3 From 239712ebb2b4750431980d33993ea05c6ac7ff65 Mon Sep 17 00:00:00 2001 From: Wey-Yi Guy Date: Thu, 20 Jan 2011 08:08:04 -0800 Subject: iwlwifi: don't read sku information from EEPROM for 4965 For all the new devices, the sku information should read from EEPROM but for legacy devices such as 4965, appearly the EEPROM does not contain the necessary information. so skip the read from EEPROM and go back to use software configuration. Reported-by: Helmut Schaa Signed-off-by: Wey-Yi Guy Tested-by: Helmut Schaa Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-4965.c | 1 + drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c | 11 +++++++---- 2 files changed, 8 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c index 3f1e5f1bf847..91a9f5253469 100644 --- a/drivers/net/wireless/iwlwifi/iwl-4965.c +++ b/drivers/net/wireless/iwlwifi/iwl-4965.c @@ -2624,6 +2624,7 @@ struct iwl_cfg iwl4965_agn_cfg = { .fw_name_pre = IWL4965_FW_PRE, .ucode_api_max = IWL4965_UCODE_API_MAX, .ucode_api_min = IWL4965_UCODE_API_MIN, + .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N, .valid_tx_ant = ANT_AB, .valid_rx_ant = ANT_ABC, .eeprom_ver = EEPROM_4965_EEPROM_VERSION, diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c b/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c index 14ceb4df72f6..27b5a3eec9dc 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-eeprom.c @@ -152,11 +152,14 @@ int iwl_eeprom_check_sku(struct iwl_priv *priv) eeprom_sku = iwl_eeprom_query16(priv, EEPROM_SKU_CAP); - priv->cfg->sku = ((eeprom_sku & EEPROM_SKU_CAP_BAND_SELECTION) >> + if (!priv->cfg->sku) { + /* not using sku overwrite */ + priv->cfg->sku = + ((eeprom_sku & EEPROM_SKU_CAP_BAND_SELECTION) >> EEPROM_SKU_CAP_BAND_POS); - if (eeprom_sku & EEPROM_SKU_CAP_11N_ENABLE) - priv->cfg->sku |= IWL_SKU_N; - + if (eeprom_sku & EEPROM_SKU_CAP_11N_ENABLE) + priv->cfg->sku |= IWL_SKU_N; + } if (!priv->cfg->sku) { IWL_ERR(priv, "Invalid device sku\n"); return -EINVAL; -- cgit v1.2.3 From 6f4810101a629b31b5427872a09ea092cfc5c4bd Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Thu, 20 Jan 2011 17:47:39 -0800 Subject: ath9k_hw: disabled PAPRD for AR9003 AR9003's PAPRD was enabled prematurely, and is causing some large discrepancies on throughput and network connectivity. For example downlink (RX) throughput against an AR9280 AP can vary widlely from 43-73 Mbit/s while disabling this gets AR9382 (2x2) up to around 93 Mbit/s in a 2.4 GHz HT20 setup. Cc: stable@kernel.org Cc: Paul Shaw Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/hw.c | 6 +++++- drivers/net/wireless/ath/ath9k/hw.h | 1 + 2 files changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 1afb8bb85756..9f01e50d5cda 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -369,6 +369,9 @@ static void ath9k_hw_init_config(struct ath_hw *ah) else ah->config.ht_enable = 0; + /* PAPRD needs some more work to be enabled */ + ah->config.paprd_disable = 1; + ah->config.rx_intr_mitigation = true; ah->config.pcieSerDesWrite = true; @@ -1933,7 +1936,8 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah) pCap->rx_status_len = sizeof(struct ar9003_rxs); pCap->tx_desc_len = sizeof(struct ar9003_txc); pCap->txs_len = sizeof(struct ar9003_txs); - if (ah->eep_ops->get_eeprom(ah, EEP_PAPRD)) + if (!ah->config.paprd_disable && + ah->eep_ops->get_eeprom(ah, EEP_PAPRD)) pCap->hw_caps |= ATH9K_HW_CAP_PAPRD; } else { pCap->tx_desc_len = sizeof(struct ath_desc); diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h index 5a3dfec45e96..ea9fde670646 100644 --- a/drivers/net/wireless/ath/ath9k/hw.h +++ b/drivers/net/wireless/ath/ath9k/hw.h @@ -225,6 +225,7 @@ struct ath9k_ops_config { u32 pcie_waen; u8 analog_shiftreg; u8 ht_enable; + u8 paprd_disable; u32 ofdm_trig_low; u32 ofdm_trig_high; u32 cck_trig_high; -- cgit v1.2.3 From 783cd01e140d9db5c2d2279a96b81e16f9d81fef Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 21 Jan 2011 18:52:38 +0100 Subject: ath9k: add missing ps wakeup/restore calls There are several places where ath_reset() was called without proper calls to ath9k_ps_wakeup/ath9k_ps_restore. To fix this, add those calls directly to ath_reset and drop them from callers where it makes sense. Also add them to the config callback around ath_update_txpow to fix a crash that happens when the tx power changed before any vif is brought up. Signed-off-by: Felix Fietkau Cc: stable@kernel.org Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/main.c | 8 +++++--- drivers/net/wireless/ath/ath9k/xmit.c | 2 -- 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index f90a6ca94a76..c79c97be6cd4 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -592,14 +592,12 @@ void ath9k_tasklet(unsigned long data) u32 status = sc->intrstatus; u32 rxmask; - ath9k_ps_wakeup(sc); - if (status & ATH9K_INT_FATAL) { ath_reset(sc, true); - ath9k_ps_restore(sc); return; } + ath9k_ps_wakeup(sc); spin_lock(&sc->sc_pcu_lock); if (!ath9k_hw_check_alive(ah)) @@ -969,6 +967,7 @@ int ath_reset(struct ath_softc *sc, bool retry_tx) /* Stop ANI */ del_timer_sync(&common->ani.timer); + ath9k_ps_wakeup(sc); spin_lock_bh(&sc->sc_pcu_lock); ieee80211_stop_queues(hw); @@ -1015,6 +1014,7 @@ int ath_reset(struct ath_softc *sc, bool retry_tx) /* Start ANI */ ath_start_ani(common); + ath9k_ps_restore(sc); return r; } @@ -1701,7 +1701,9 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed) skip_chan_change: if (changed & IEEE80211_CONF_CHANGE_POWER) { sc->config.txpowlimit = 2 * conf->power_level; + ath9k_ps_wakeup(sc); ath_update_txpow(sc); + ath9k_ps_restore(sc); } spin_lock_bh(&sc->wiphy_lock); diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 332d1feb5c18..33a37edbaf79 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -2113,9 +2113,7 @@ static void ath_tx_complete_poll_work(struct work_struct *work) if (needreset) { ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_RESET, "tx hung, resetting the chip\n"); - ath9k_ps_wakeup(sc); ath_reset(sc, true); - ath9k_ps_restore(sc); } ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, -- cgit v1.2.3 From bdc4bf652bc0271ba8f1f25bbd3dbac90bead44e Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Fri, 21 Jan 2011 13:40:54 -0600 Subject: rtlwifi: Fix possible NULL dereference In drivers/net/wireless/rtlwifi/pci.c::_rtl_pci_rx_interrupt() we call dev_alloc_skb(), which may fail and return NULL, but we do not check the returned value against NULL before dereferencing the returned pointer. This may lead to a NULL pointer dereference which means we'll crash - not good. In a separate call to dev_alloc_skb(), the debug level is changed so that the failure message will always be logged. Signed-off-by: Jesper Juhl Signed-off-by: Larry Finger Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/pci.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c index 0fa36aa6701a..1758d4463247 100644 --- a/drivers/net/wireless/rtlwifi/pci.c +++ b/drivers/net/wireless/rtlwifi/pci.c @@ -619,6 +619,13 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw) struct sk_buff *uskb = NULL; u8 *pdata; uskb = dev_alloc_skb(skb->len + 128); + if (!uskb) { + RT_TRACE(rtlpriv, + (COMP_INTR | COMP_RECV), + DBG_EMERG, + ("can't alloc rx skb\n")); + goto done; + } memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status, sizeof(rx_status)); @@ -641,7 +648,7 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw) new_skb = dev_alloc_skb(rtlpci->rxbuffersize); if (unlikely(!new_skb)) { RT_TRACE(rtlpriv, (COMP_INTR | COMP_RECV), - DBG_DMESG, + DBG_EMERG, ("can't alloc skb for rx\n")); goto done; } @@ -1066,9 +1073,9 @@ static int _rtl_pci_init_rx_ring(struct ieee80211_hw *hw) struct sk_buff *skb = dev_alloc_skb(rtlpci->rxbuffersize); u32 bufferaddress; - entry = &rtlpci->rx_ring[rx_queue_idx].desc[i]; if (!skb) return 0; + entry = &rtlpci->rx_ring[rx_queue_idx].desc[i]; /*skb->dev = dev; */ -- cgit v1.2.3 From 9c4cf6d94fb362c27a24df5223ed6e327eb7279a Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 25 Jan 2011 17:42:29 +0800 Subject: rt2x00: add device id for windy31 usb device This patch adds the device id for the windy31 USB device to the rt73usb driver. Thanks to Ralf Flaxa for reporting this and providing testing and a sample device. Reported-by: Ralf Flaxa Tested-by: Ralf Flaxa Cc: stable Signed-off-by: Greg Kroah-Hartman Acked-by: Ivo van Doorn Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt73usb.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c index 0b4e8590cbb7..029be3c6c030 100644 --- a/drivers/net/wireless/rt2x00/rt73usb.c +++ b/drivers/net/wireless/rt2x00/rt73usb.c @@ -2446,6 +2446,7 @@ static struct usb_device_id rt73usb_device_table[] = { { USB_DEVICE(0x04bb, 0x093d), USB_DEVICE_DATA(&rt73usb_ops) }, { USB_DEVICE(0x148f, 0x2573), USB_DEVICE_DATA(&rt73usb_ops) }, { USB_DEVICE(0x148f, 0x2671), USB_DEVICE_DATA(&rt73usb_ops) }, + { USB_DEVICE(0x0812, 0x3101), USB_DEVICE_DATA(&rt73usb_ops) }, /* Qcom */ { USB_DEVICE(0x18e8, 0x6196), USB_DEVICE_DATA(&rt73usb_ops) }, { USB_DEVICE(0x18e8, 0x6229), USB_DEVICE_DATA(&rt73usb_ops) }, -- cgit v1.2.3