Showing error 1069

User: Jiri Slaby
Error type: Leaving function in locked state
Error type description: Some lock is not unlocked on all paths of a function, so it is leaked
File location: drivers/net/wireless/orinoco.h
Line in file: 204
Project: Linux Kernel
Project version: 2.6.28
Tools: Undetermined 1
Entered: 2012-03-04 17:07:06 UTC

Source: 

  1/* orinoco.h
  2 * 
  3 * Common definitions to all pieces of the various orinoco
  4 * drivers
  5 */
  6
  7#ifndef _ORINOCO_H
  8#define _ORINOCO_H
  9
 10#define DRIVER_VERSION "0.15"
 11
 12#include <linux/interrupt.h>
 13#include <linux/netdevice.h>
 14#include <linux/wireless.h>
 15#include <net/iw_handler.h>
 16
 17#include "hermes.h"
 18
 19/* To enable debug messages */
 20//#define ORINOCO_DEBUG                3
 21
 22#define WIRELESS_SPY                // enable iwspy support
 23
 24#define MAX_SCAN_LEN                4096
 25
 26#define ORINOCO_MAX_KEY_SIZE        14
 27#define ORINOCO_MAX_KEYS        4
 28
 29struct orinoco_key {
 30        __le16 len;        /* always stored as little-endian */
 31        char data[ORINOCO_MAX_KEY_SIZE];
 32} __attribute__ ((packed));
 33
 34#define TKIP_KEYLEN        16
 35#define MIC_KEYLEN        8
 36
 37struct orinoco_tkip_key {
 38        u8 tkip[TKIP_KEYLEN];
 39        u8 tx_mic[MIC_KEYLEN];
 40        u8 rx_mic[MIC_KEYLEN];
 41};
 42
 43typedef enum {
 44        FIRMWARE_TYPE_AGERE,
 45        FIRMWARE_TYPE_INTERSIL,
 46        FIRMWARE_TYPE_SYMBOL
 47} fwtype_t;
 48
 49struct bss_element {
 50        union hermes_scan_info bss;
 51        unsigned long last_scanned;
 52        struct list_head list;
 53};
 54
 55struct xbss_element {
 56        struct agere_ext_scan_info bss;
 57        unsigned long last_scanned;
 58        struct list_head list;
 59};
 60
 61struct hermes_rx_descriptor;
 62
 63struct orinoco_rx_data {
 64        struct hermes_rx_descriptor *desc;
 65        struct sk_buff *skb;
 66        struct list_head list;
 67};
 68
 69struct orinoco_private {
 70        void *card;        /* Pointer to card dependent structure */
 71        struct device *dev;
 72        int (*hard_reset)(struct orinoco_private *);
 73        int (*stop_fw)(struct orinoco_private *, int);
 74
 75        /* Synchronisation stuff */
 76        spinlock_t lock;
 77        int hw_unavailable;
 78        struct work_struct reset_work;
 79
 80        /* Interrupt tasklets */
 81        struct tasklet_struct rx_tasklet;
 82        struct list_head rx_list;
 83        struct orinoco_rx_data *rx_data;
 84
 85        /* driver state */
 86        int open;
 87        u16 last_linkstatus;
 88        struct work_struct join_work;
 89        struct work_struct wevent_work;
 90
 91        /* Net device stuff */
 92        struct net_device *ndev;
 93        struct net_device_stats stats;
 94        struct iw_statistics wstats;
 95
 96        /* Hardware control variables */
 97        hermes_t hw;
 98        u16 txfid;
 99
100        /* Capabilities of the hardware/firmware */
101        fwtype_t firmware_type;
102        char fw_name[32];
103        int ibss_port;
104        int nicbuf_size;
105        u16 channel_mask;
106
107        /* Boolean capabilities */
108        unsigned int has_ibss:1;
109        unsigned int has_port3:1;
110        unsigned int has_wep:1;
111        unsigned int has_big_wep:1;
112        unsigned int has_mwo:1;
113        unsigned int has_pm:1;
114        unsigned int has_preamble:1;
115        unsigned int has_sensitivity:1;
116        unsigned int has_hostscan:1;
117        unsigned int has_alt_txcntl:1;
118        unsigned int has_ext_scan:1;
119        unsigned int has_wpa:1;
120        unsigned int do_fw_download:1;
121        unsigned int broken_disableport:1;
122        unsigned int broken_monitor:1;
123
124        /* Configuration paramaters */
125        u32 iw_mode;
126        int prefer_port3;
127        u16 encode_alg, wep_restrict, tx_key;
128        struct orinoco_key keys[ORINOCO_MAX_KEYS];
129        int bitratemode;
130         char nick[IW_ESSID_MAX_SIZE+1];
131        char desired_essid[IW_ESSID_MAX_SIZE+1];
132        char desired_bssid[ETH_ALEN];
133        int bssid_fixed;
134        u16 frag_thresh, mwo_robust;
135        u16 channel;
136        u16 ap_density, rts_thresh;
137        u16 pm_on, pm_mcast, pm_period, pm_timeout;
138        u16 preamble;
139#ifdef WIRELESS_SPY
140         struct iw_spy_data spy_data; /* iwspy support */
141        struct iw_public_data        wireless_data;
142#endif
143
144        /* Configuration dependent variables */
145        int port_type, createibss;
146        int promiscuous, mc_count;
147
148        /* Scanning support */
149        struct list_head bss_list;
150        struct list_head bss_free_list;
151        void *bss_xbss_data;
152
153        int        scan_inprogress;        /* Scan pending... */
154        u32        scan_mode;                /* Type of scan done */
155
156        /* WPA support */
157        u8 *wpa_ie;
158        int wpa_ie_len;
159
160        struct orinoco_tkip_key tkip_key[ORINOCO_MAX_KEYS];
161        struct crypto_hash *rx_tfm_mic;
162        struct crypto_hash *tx_tfm_mic;
163
164        unsigned int wpa_enabled:1;
165        unsigned int tkip_cm_active:1;
166        unsigned int key_mgmt:3;
167};
168
169#ifdef ORINOCO_DEBUG
170extern int orinoco_debug;
171#define DEBUG(n, args...) do { if (orinoco_debug>(n)) printk(KERN_DEBUG args); } while(0)
172#else
173#define DEBUG(n, args...) do { } while (0)
174#endif        /* ORINOCO_DEBUG */
175
176/********************************************************************/
177/* Exported prototypes                                              */
178/********************************************************************/
179
180extern struct net_device *alloc_orinocodev(
181        int sizeof_card, struct device *device,
182        int (*hard_reset)(struct orinoco_private *),
183        int (*stop_fw)(struct orinoco_private *, int));
184extern void free_orinocodev(struct net_device *dev);
185extern int __orinoco_up(struct net_device *dev);
186extern int __orinoco_down(struct net_device *dev);
187extern int orinoco_reinit_firmware(struct net_device *dev);
188extern irqreturn_t orinoco_interrupt(int irq, void * dev_id);
189
190/********************************************************************/
191/* Locking and synchronization functions                            */
192/********************************************************************/
193
194static inline int orinoco_lock(struct orinoco_private *priv,
195                               unsigned long *flags)
196{
197        spin_lock_irqsave(&priv->lock, *flags);
198        if (priv->hw_unavailable) {
199                DEBUG(1, "orinoco_lock() called with hw_unavailable (dev=%p)\n",
200                       priv->ndev);
201                spin_unlock_irqrestore(&priv->lock, *flags);
202                return -EBUSY;
203        }
204        return 0;
205}
206
207static inline void orinoco_unlock(struct orinoco_private *priv,
208                                  unsigned long *flags)
209{
210        spin_unlock_irqrestore(&priv->lock, *flags);
211}
212
213#endif /* _ORINOCO_H */
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