diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-trans.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-trans.h | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h index 0a3d4df..8c7bec6 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans.h @@ -65,6 +65,7 @@ #include <linux/ieee80211.h> #include <linux/mm.h> /* for page_address */ +#include <linux/lockdep.h> #include "iwl-debug.h" #include "iwl-config.h" @@ -526,6 +527,10 @@ struct iwl_trans { struct dentry *dbgfs_dir; +#ifdef CONFIG_LOCKDEP + struct lockdep_map sync_cmd_lockdep_map; +#endif + /* pointer to trans specific struct */ /*Ensure that this pointer will always be aligned to sizeof pointer */ char trans_specific[0] __aligned(sizeof(void *)); @@ -602,12 +607,22 @@ static inline int iwl_trans_d3_resume(struct iwl_trans *trans, } static inline int iwl_trans_send_cmd(struct iwl_trans *trans, - struct iwl_host_cmd *cmd) + struct iwl_host_cmd *cmd) { + int ret; + WARN_ONCE(trans->state != IWL_TRANS_FW_ALIVE, "%s bad state = %d", __func__, trans->state); - return trans->ops->send_cmd(trans, cmd); + if (!(cmd->flags & CMD_ASYNC)) + lock_map_acquire_read(&trans->sync_cmd_lockdep_map); + + ret = trans->ops->send_cmd(trans, cmd); + + if (!(cmd->flags & CMD_ASYNC)) + lock_map_release(&trans->sync_cmd_lockdep_map); + + return ret; } static inline struct iwl_device_cmd * @@ -791,4 +806,14 @@ iwl_trans_release_nic_access(struct iwl_trans *trans, unsigned long *flags) int __must_check iwl_pci_register_driver(void); void iwl_pci_unregister_driver(void); +static inline void trans_lockdep_init(struct iwl_trans *trans) +{ +#ifdef CONFIG_LOCKDEP + static struct lock_class_key __key; + + lockdep_init_map(&trans->sync_cmd_lockdep_map, "sync_cmd_lockdep_map", + &__key, 0); +#endif +} + #endif /* __iwl_trans_h__ */ |