From f29eeb79ac993a7f1d9e1be5f8c7c3684be0721d Mon Sep 17 00:00:00 2001 From: Rasesh Mody Date: Tue, 17 Dec 2013 17:07:39 -0800 Subject: [PATCH] bna: Handle the TX Setup Failures Change details: - When bnad_setup_tx() returns NULL, the error is NOT returned to the caller. The caller will incorrectly assume success. So Return ENOMEM when bna_tx_create() fails. - If bnad_tx_msix_register() fails, call bna_tx_destroy() to free tx & to NULL the bnad reference to tcb. Signed-off-by: Rasesh Mody Signed-off-by: David S. Miller --- drivers/net/ethernet/brocade/bna/bnad.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/brocade/bna/bnad.c b/drivers/net/ethernet/brocade/bna/bnad.c index e31937a..8d6c752 100644 --- a/drivers/net/ethernet/brocade/bna/bnad.c +++ b/drivers/net/ethernet/brocade/bna/bnad.c @@ -1999,8 +1999,10 @@ bnad_setup_tx(struct bnad *bnad, u32 tx_id) tx = bna_tx_create(&bnad->bna, bnad, tx_config, &tx_cbfn, res_info, tx_info); spin_unlock_irqrestore(&bnad->bna_lock, flags); - if (!tx) + if (!tx) { + err = -ENOMEM; goto err_return; + } tx_info->tx = tx; INIT_DELAYED_WORK(&tx_info->tx_cleanup_work, @@ -2011,7 +2013,7 @@ bnad_setup_tx(struct bnad *bnad, u32 tx_id) err = bnad_tx_msix_register(bnad, tx_info, tx_id, bnad->num_txq_per_tx); if (err) - goto err_return; + goto cleanup_tx; } spin_lock_irqsave(&bnad->bna_lock, flags); @@ -2020,6 +2022,12 @@ bnad_setup_tx(struct bnad *bnad, u32 tx_id) return 0; +cleanup_tx: + spin_lock_irqsave(&bnad->bna_lock, flags); + bna_tx_destroy(tx_info->tx); + spin_unlock_irqrestore(&bnad->bna_lock, flags); + tx_info->tx = NULL; + tx_info->tx_id = 0; err_return: bnad_tx_res_free(bnad, res_info); return err; -- 2.7.4