From 90f7b11a5a0081feb7041fcc795c9a131a62a725 Mon Sep 17 00:00:00 2001 From: Lipeng Date: Tue, 19 Sep 2017 17:17:16 +0100 Subject: [PATCH] net: hns3: Fixes the premature exit of loop when matching clients When register/unregister ae_dev, ae_dev should match all client in the client_list. Enet and roce can co-exists together so we should continue checking for enet and roce presence together. So break should not be there. Above caused problems in loading and unloading of modules. Fixes: 38eddd126772 ("net: hns3: Add support of the HNAE3 framework") Signed-off-by: Lipeng Signed-off-by: Salil Mehta Signed-off-by: David S. Miller --- drivers/net/ethernet/hisilicon/hns3/hnae3.c | 43 +++++---------------- 1 file changed, 9 insertions(+), 34 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.c b/drivers/net/ethernet/hisilicon/hns3/hnae3.c index 59efbd605416..5bcb2238acb2 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hnae3.c +++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.c @@ -37,20 +37,15 @@ static bool hnae3_client_match(enum hnae3_client_type client_type, } static int hnae3_match_n_instantiate(struct hnae3_client *client, - struct hnae3_ae_dev *ae_dev, - bool is_reg, bool *matched) + struct hnae3_ae_dev *ae_dev, bool is_reg) { int ret; - *matched = false; - /* check if this client matches the type of ae_dev */ if (!(hnae3_client_match(client->type, ae_dev->dev_type) && hnae_get_bit(ae_dev->flag, HNAE3_DEV_INITED_B))) { return 0; } - /* there is a match of client and dev */ - *matched = true; /* now, (un-)instantiate client by calling lower layer */ if (is_reg) { @@ -69,7 +64,6 @@ int hnae3_register_client(struct hnae3_client *client) { struct hnae3_client *client_tmp; struct hnae3_ae_dev *ae_dev; - bool matched; int ret = 0; mutex_lock(&hnae3_common_lock); @@ -86,7 +80,7 @@ int hnae3_register_client(struct hnae3_client *client) /* if the client could not be initialized on current port, for * any error reasons, move on to next available port */ - ret = hnae3_match_n_instantiate(client, ae_dev, true, &matched); + ret = hnae3_match_n_instantiate(client, ae_dev, true); if (ret) dev_err(&ae_dev->pdev->dev, "match and instantiation failed for port\n"); @@ -102,12 +96,11 @@ EXPORT_SYMBOL(hnae3_register_client); void hnae3_unregister_client(struct hnae3_client *client) { struct hnae3_ae_dev *ae_dev; - bool matched; mutex_lock(&hnae3_common_lock); /* un-initialize the client on every matched port */ list_for_each_entry(ae_dev, &hnae3_ae_dev_list, node) { - hnae3_match_n_instantiate(client, ae_dev, false, &matched); + hnae3_match_n_instantiate(client, ae_dev, false); } list_del(&client->node); @@ -124,7 +117,6 @@ int hnae3_register_ae_algo(struct hnae3_ae_algo *ae_algo) const struct pci_device_id *id; struct hnae3_ae_dev *ae_dev; struct hnae3_client *client; - bool matched; int ret = 0; mutex_lock(&hnae3_common_lock); @@ -151,13 +143,10 @@ int hnae3_register_ae_algo(struct hnae3_ae_algo *ae_algo) * initialize the figure out client instance */ list_for_each_entry(client, &hnae3_client_list, node) { - ret = hnae3_match_n_instantiate(client, ae_dev, true, - &matched); + ret = hnae3_match_n_instantiate(client, ae_dev, true); if (ret) dev_err(&ae_dev->pdev->dev, "match and instantiation failed\n"); - if (matched) - break; } } @@ -175,7 +164,6 @@ void hnae3_unregister_ae_algo(struct hnae3_ae_algo *ae_algo) const struct pci_device_id *id; struct hnae3_ae_dev *ae_dev; struct hnae3_client *client; - bool matched; mutex_lock(&hnae3_common_lock); /* Check if there are matched ae_dev */ @@ -187,12 +175,8 @@ void hnae3_unregister_ae_algo(struct hnae3_ae_algo *ae_algo) /* check the client list for the match with this ae_dev type and * un-initialize the figure out client instance */ - list_for_each_entry(client, &hnae3_client_list, node) { - hnae3_match_n_instantiate(client, ae_dev, false, - &matched); - if (matched) - break; - } + list_for_each_entry(client, &hnae3_client_list, node) + hnae3_match_n_instantiate(client, ae_dev, false); ae_algo->ops->uninit_ae_dev(ae_dev); hnae_set_bit(ae_dev->flag, HNAE3_DEV_INITED_B, 0); @@ -212,7 +196,6 @@ int hnae3_register_ae_dev(struct hnae3_ae_dev *ae_dev) const struct pci_device_id *id; struct hnae3_ae_algo *ae_algo; struct hnae3_client *client; - bool matched; int ret = 0; mutex_lock(&hnae3_common_lock); @@ -246,13 +229,10 @@ int hnae3_register_ae_dev(struct hnae3_ae_dev *ae_dev) * initialize the figure out client instance */ list_for_each_entry(client, &hnae3_client_list, node) { - ret = hnae3_match_n_instantiate(client, ae_dev, true, - &matched); + ret = hnae3_match_n_instantiate(client, ae_dev, true); if (ret) dev_err(&ae_dev->pdev->dev, "match and instantiation failed\n"); - if (matched) - break; } out_err: @@ -270,7 +250,6 @@ void hnae3_unregister_ae_dev(struct hnae3_ae_dev *ae_dev) const struct pci_device_id *id; struct hnae3_ae_algo *ae_algo; struct hnae3_client *client; - bool matched; mutex_lock(&hnae3_common_lock); /* Check if there are matched ae_algo */ @@ -279,12 +258,8 @@ void hnae3_unregister_ae_dev(struct hnae3_ae_dev *ae_dev) if (!id) continue; - list_for_each_entry(client, &hnae3_client_list, node) { - hnae3_match_n_instantiate(client, ae_dev, false, - &matched); - if (matched) - break; - } + list_for_each_entry(client, &hnae3_client_list, node) + hnae3_match_n_instantiate(client, ae_dev, false); ae_algo->ops->uninit_ae_dev(ae_dev); hnae_set_bit(ae_dev->flag, HNAE3_DEV_INITED_B, 0); -- GitLab