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path: root/drivers/net/wireless/rtlwifi/usb.c
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Diffstat (limited to 'drivers/net/wireless/rtlwifi/usb.c')
-rw-r--r--drivers/net/wireless/rtlwifi/usb.c110
1 files changed, 54 insertions, 56 deletions
diff --git a/drivers/net/wireless/rtlwifi/usb.c b/drivers/net/wireless/rtlwifi/usb.c
index e956fa71d040..2e1e352864bb 100644
--- a/drivers/net/wireless/rtlwifi/usb.c
+++ b/drivers/net/wireless/rtlwifi/usb.c
@@ -1,6 +1,6 @@
/******************************************************************************
*
- * Copyright(c) 2009-2011 Realtek Corporation. All rights reserved.
+ * Copyright(c) 2009-2012 Realtek Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
@@ -25,16 +25,13 @@
*
*****************************************************************************/
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/usb.h>
-#include <linux/export.h>
-#include "core.h"
#include "wifi.h"
+#include "core.h"
#include "usb.h"
#include "base.h"
#include "ps.h"
#include "rtl8192c/fw_common.h"
+#include <linux/export.h>
#define REALTEK_USB_VENQT_READ 0xC0
#define REALTEK_USB_VENQT_WRITE 0x40
@@ -276,14 +273,14 @@ static int _rtl_usb_init_tx(struct ieee80211_hw *hw)
? USB_HIGH_SPEED_BULK_SIZE
: USB_FULL_SPEED_BULK_SIZE;
- RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("USB Max Bulk-out Size=%d\n",
- rtlusb->max_bulk_out_size));
+ RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "USB Max Bulk-out Size=%d\n",
+ rtlusb->max_bulk_out_size);
for (i = 0; i < __RTL_TXQ_NUM; i++) {
u32 ep_num = rtlusb->ep_map.ep_mapping[i];
if (!ep_num) {
RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
- ("Invalid endpoint map setting!\n"));
+ "Invalid endpoint map setting!\n");
return -EINVAL;
}
}
@@ -345,13 +342,18 @@ static int _rtl_usb_init(struct ieee80211_hw *hw)
rtlusb->out_ep_nums++;
RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
- ("USB EP(0x%02x), MaxPacketSize=%d ,Interval=%d.\n",
+ "USB EP(0x%02x), MaxPacketSize=%d, Interval=%d\n",
pep_desc->bEndpointAddress, pep_desc->wMaxPacketSize,
- pep_desc->bInterval));
+ pep_desc->bInterval);
+ }
+ if (rtlusb->in_ep_nums < rtlpriv->cfg->usb_interface_cfg->in_ep_num) {
+ pr_err("Too few input end points found\n");
+ return -EINVAL;
+ }
+ if (rtlusb->out_ep_nums == 0) {
+ pr_err("No output end points found\n");
+ return -EINVAL;
}
- if (rtlusb->in_ep_nums < rtlpriv->cfg->usb_interface_cfg->in_ep_num)
- return -EINVAL ;
-
/* usb endpoint mapping */
err = rtlpriv->cfg->usb_interface_cfg->usb_endpoint_mapping(hw);
rtlusb->usb_mq_to_hwq = rtlpriv->cfg->usb_interface_cfg->usb_mq_to_hwq;
@@ -360,7 +362,7 @@ static int _rtl_usb_init(struct ieee80211_hw *hw)
return err;
}
-static int _rtl_usb_init_sw(struct ieee80211_hw *hw)
+static void rtl_usb_init_sw(struct ieee80211_hw *hw)
{
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
@@ -395,7 +397,6 @@ static int _rtl_usb_init_sw(struct ieee80211_hw *hw)
/* HIMR_EX - turn all on */
rtlusb->irq_mask[1] = 0xFFFFFFFF;
rtlusb->disableHWSM = true;
- return 0;
}
#define __RADIO_TAP_SIZE_RSV 32
@@ -414,7 +415,7 @@ static struct sk_buff *_rtl_prep_rx_urb(struct ieee80211_hw *hw,
gfp_mask);
if (!skb) {
RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- ("Failed to __dev_alloc_skb!!\n"))
+ "Failed to __dev_alloc_skb!!\n");
return ERR_PTR(-ENOMEM);
}
@@ -520,12 +521,14 @@ static void _rtl_usb_rx_process_noagg(struct ieee80211_hw *hw,
u8 *pdata;
uskb = dev_alloc_skb(skb->len + 128);
- memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status,
- sizeof(rx_status));
- pdata = (u8 *)skb_put(uskb, skb->len);
- memcpy(pdata, skb->data, skb->len);
+ if (uskb) { /* drop packet on allocation failure */
+ memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status,
+ sizeof(rx_status));
+ pdata = (u8 *)skb_put(uskb, skb->len);
+ memcpy(pdata, skb->data, skb->len);
+ ieee80211_rx_irqsafe(hw, uskb);
+ }
dev_kfree_skb_any(skb);
- ieee80211_rx_irqsafe(hw, uskb);
} else {
dev_kfree_skb_any(skb);
}
@@ -575,7 +578,7 @@ static void _rtl_rx_completed(struct urb *_urb)
if (IS_ERR(_skb)) {
err = PTR_ERR(_skb);
RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- ("Can't allocate skb for bulk IN!\n"));
+ "Can't allocate skb for bulk IN!\n");
return;
}
skb = _skb;
@@ -632,14 +635,14 @@ static int _rtl_usb_receive(struct ieee80211_hw *hw)
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- ("Failed to alloc URB!!\n"))
+ "Failed to alloc URB!!\n");
goto err_out;
}
skb = _rtl_prep_rx_urb(hw, rtlusb, urb, GFP_KERNEL);
if (IS_ERR(skb)) {
RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- ("Failed to prep_rx_urb!!\n"))
+ "Failed to prep_rx_urb!!\n");
err = PTR_ERR(skb);
goto err_out;
}
@@ -665,15 +668,17 @@ static int rtl_usb_start(struct ieee80211_hw *hw)
struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
err = rtlpriv->cfg->ops->hw_init(hw);
- rtl_init_rx_config(hw);
+ if (!err) {
+ rtl_init_rx_config(hw);
- /* Enable software */
- SET_USB_START(rtlusb);
- /* should after adapter start and interrupt enable. */
- set_hal_start(rtlhal);
+ /* Enable software */
+ SET_USB_START(rtlusb);
+ /* should after adapter start and interrupt enable. */
+ set_hal_start(rtlhal);
- /* Start bulk IN */
- _rtl_usb_receive(hw);
+ /* Start bulk IN */
+ _rtl_usb_receive(hw);
+ }
return err;
}
@@ -745,7 +750,7 @@ static void _rtl_submit_tx_urb(struct ieee80211_hw *hw, struct urb *_urb)
struct sk_buff *skb;
RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- ("Failed to submit urb.\n"));
+ "Failed to submit urb\n");
usb_unanchor_urb(_urb);
skb = (struct sk_buff *)_urb->context;
kfree_skb(skb);
@@ -768,7 +773,7 @@ static int _usb_tx_post(struct ieee80211_hw *hw, struct urb *urb,
if (urb->status) {
RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- ("Urb has error status 0x%X\n", urb->status));
+ "Urb has error status 0x%X\n", urb->status);
goto out;
}
/* TODO: statistics */
@@ -805,7 +810,7 @@ static struct urb *_rtl_usb_tx_urb_setup(struct ieee80211_hw *hw,
_urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!_urb) {
RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- ("Can't allocate URB for bulk out!\n"));
+ "Can't allocate URB for bulk out!\n");
kfree_skb(skb);
return NULL;
}
@@ -830,7 +835,7 @@ static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
WARN_ON(NULL == rtlusb->usb_tx_aggregate_hdl);
if (unlikely(IS_USB_STOP(rtlusb))) {
RT_TRACE(rtlpriv, COMP_USB, DBG_EMERG,
- ("USB device is stopping...\n"));
+ "USB device is stopping...\n");
kfree_skb(skb);
return;
}
@@ -840,7 +845,7 @@ static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
_urb = _rtl_usb_tx_urb_setup(hw, _skb, ep_num);
if (unlikely(!_urb)) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
- ("Can't allocate urb. Drop skb!\n"));
+ "Can't allocate urb. Drop skb!\n");
return;
}
urb_list = &rtlusb->tx_pending[ep_num];
@@ -865,7 +870,7 @@ static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw, struct sk_buff *skb,
memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
if (ieee80211_is_auth(fc)) {
- RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, ("MAC80211_LINKING\n"));
+ RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n");
rtl_ips_nic_on(hw);
}
@@ -946,10 +951,11 @@ int __devinit rtl_usb_probe(struct usb_interface *intf,
hw = ieee80211_alloc_hw(sizeof(struct rtl_priv) +
sizeof(struct rtl_usb_priv), &rtl_ops);
if (!hw) {
- RT_ASSERT(false, ("%s : ieee80211 alloc failed\n", __func__));
+ RT_ASSERT(false, "ieee80211 alloc failed\n");
return -ENOMEM;
}
rtlpriv = hw->priv;
+ init_completion(&rtlpriv->firmware_loading_complete);
SET_IEEE80211_DEV(hw, &intf->dev);
udev = interface_to_usbdev(intf);
usb_get_dev(udev);
@@ -969,39 +975,28 @@ int __devinit rtl_usb_probe(struct usb_interface *intf,
/*like read eeprom and so on */
rtlpriv->cfg->ops->read_eeprom_info(hw);
if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
- RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
- ("Can't init_sw_vars.\n"));
+ RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't init_sw_vars\n");
goto error_out;
}
rtlpriv->cfg->ops->init_sw_leds(hw);
err = _rtl_usb_init(hw);
- err = _rtl_usb_init_sw(hw);
+ if (err)
+ goto error_out;
+ rtl_usb_init_sw(hw);
/* Init mac80211 sw */
err = rtl_init_core(hw);
if (err) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
- ("Can't allocate sw for mac80211.\n"));
+ "Can't allocate sw for mac80211\n");
goto error_out;
}
- /*init rfkill */
- /* rtl_init_rfkill(hw); */
-
- err = ieee80211_register_hw(hw);
- if (err) {
- RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
- ("Can't register mac80211 hw.\n"));
- goto error_out;
- } else {
- rtlpriv->mac80211.mac80211_registered = 1;
- }
- set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
return 0;
error_out:
rtl_deinit_core(hw);
_rtl_usb_io_handler_release(hw);
- ieee80211_free_hw(hw);
usb_put_dev(udev);
+ complete(&rtlpriv->firmware_loading_complete);
return -ENODEV;
}
EXPORT_SYMBOL(rtl_usb_probe);
@@ -1015,6 +1010,9 @@ void rtl_usb_disconnect(struct usb_interface *intf)
if (unlikely(!rtlpriv))
return;
+
+ /* just in case driver is removed before firmware callback */
+ wait_for_completion(&rtlpriv->firmware_loading_complete);
/*ieee80211_unregister_hw will call ops_stop */
if (rtlmac->mac80211_registered == 1) {
ieee80211_unregister_hw(hw);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.