From d7e057dca3f1b76ff44dd16fefcd493a52614aad Mon Sep 17 00:00:00 2001 From: Zhu Yi Date: Mon, 15 Jun 2009 21:36:14 +0200 Subject: [PATCH] iwmc3200wifi: add iwm_if_add and iwm_if_remove We used to do alloc_netdev and register_netdev at the same time in iwm_if_alloc. But some bus related structures will only be initialized after iwm_priv is allocated. This caused a race condition that the netdev might be registered earlier. The patch adds iwm_if_add and iwm_if_remove so that the bus layer could register the device after all initialization is done. Signed-off-by: Zhu Yi Signed-off-by: Samuel Ortiz Signed-off-by: John W. Linville --- drivers/net/wireless/iwmc3200wifi/iwm.h | 2 ++ drivers/net/wireless/iwmc3200wifi/netdev.c | 32 ++++++++++++++-------- drivers/net/wireless/iwmc3200wifi/sdio.c | 9 ++++++ 3 files changed, 31 insertions(+), 12 deletions(-) diff --git a/drivers/net/wireless/iwmc3200wifi/iwm.h b/drivers/net/wireless/iwmc3200wifi/iwm.h index 2237448e0427..4aa0ad1932ff 100644 --- a/drivers/net/wireless/iwmc3200wifi/iwm.h +++ b/drivers/net/wireless/iwmc3200wifi/iwm.h @@ -315,6 +315,8 @@ extern const struct iw_handler_def iwm_iw_handler_def; void *iwm_if_alloc(int sizeof_bus, struct device *dev, struct iwm_if_ops *if_ops); void iwm_if_free(struct iwm_priv *iwm); +int iwm_if_add(struct iwm_priv *iwm); +void iwm_if_remove(struct iwm_priv *iwm); int iwm_mode_to_nl80211_iftype(int mode); int iwm_priv_init(struct iwm_priv *iwm); void iwm_priv_deinit(struct iwm_priv *iwm); diff --git a/drivers/net/wireless/iwmc3200wifi/netdev.c b/drivers/net/wireless/iwmc3200wifi/netdev.c index 88dd82649b47..aaa20c6885c8 100644 --- a/drivers/net/wireless/iwmc3200wifi/netdev.c +++ b/drivers/net/wireless/iwmc3200wifi/netdev.c @@ -123,8 +123,7 @@ void *iwm_if_alloc(int sizeof_bus, struct device *dev, wdev->iftype = iwm_mode_to_nl80211_iftype(iwm->conf.mode); - ndev = alloc_netdev_mq(0, "wlan%d", ether_setup, - IWM_TX_QUEUES); + ndev = alloc_netdev_mq(0, "wlan%d", ether_setup, IWM_TX_QUEUES); if (!ndev) { dev_err(dev, "no memory for network device instance\n"); goto out_priv; @@ -134,19 +133,10 @@ void *iwm_if_alloc(int sizeof_bus, struct device *dev, ndev->wireless_handlers = &iwm_iw_handler_def; ndev->ieee80211_ptr = wdev; SET_NETDEV_DEV(ndev, wiphy_dev(wdev->wiphy)); - ret = register_netdev(ndev); - if (ret < 0) { - dev_err(dev, "Failed to register netdev: %d\n", ret); - goto out_ndev; - } - wdev->netdev = ndev; return iwm; - out_ndev: - free_netdev(ndev); - out_priv: iwm_priv_deinit(iwm); @@ -160,8 +150,26 @@ void iwm_if_free(struct iwm_priv *iwm) if (!iwm_to_ndev(iwm)) return; - unregister_netdev(iwm_to_ndev(iwm)); free_netdev(iwm_to_ndev(iwm)); iwm_wdev_free(iwm); iwm_priv_deinit(iwm); } + +int iwm_if_add(struct iwm_priv *iwm) +{ + struct net_device *ndev = iwm_to_ndev(iwm); + int ret; + + ret = register_netdev(ndev); + if (ret < 0) { + dev_err(&ndev->dev, "Failed to register netdev: %d\n", ret); + return ret; + } + + return 0; +} + +void iwm_if_remove(struct iwm_priv *iwm) +{ + unregister_netdev(iwm_to_ndev(iwm)); +} diff --git a/drivers/net/wireless/iwmc3200wifi/sdio.c b/drivers/net/wireless/iwmc3200wifi/sdio.c index b54da677b371..c0405715647a 100644 --- a/drivers/net/wireless/iwmc3200wifi/sdio.c +++ b/drivers/net/wireless/iwmc3200wifi/sdio.c @@ -454,10 +454,18 @@ static int iwm_sdio_probe(struct sdio_func *func, INIT_WORK(&hw->isr_worker, iwm_sdio_isr_worker); + ret = iwm_if_add(iwm); + if (ret) { + dev_err(dev, "add SDIO interface failed\n"); + goto destroy_wq; + } + dev_info(dev, "IWM SDIO probe\n"); return 0; + destroy_wq: + destroy_workqueue(hw->isr_wq); debugfs_exit: iwm_debugfs_exit(iwm); if_free: @@ -472,6 +480,7 @@ static void iwm_sdio_remove(struct sdio_func *func) struct device *dev = &func->dev; iwm_debugfs_exit(iwm); + iwm_if_remove(iwm); iwm_if_free(iwm); destroy_workqueue(hw->isr_wq); -- 2.30.2