From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6F9A57B for ; Wed, 23 Nov 2022 08:58:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BF4EAC433D6; Wed, 23 Nov 2022 08:58:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1669193894; bh=I/DCJwncZwYj2qRF9/gB1NM8kyDOLWWZK9insvDA7Yk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YzBE1/y6GWWcZFuQyStlda/L49s297Zzrs3p36KDjtk66aT51FiU+5EMwo2i3x/HW MXkB73Bc4TbeSfgDECQu9SGgflSe8WDvRPqSjUJr5nc42NXhxKMZ5Ns3NJwQjwphyI MEoPSQRbBgVvI8aPfw4LrRPv+ZLWMff8gC1ajxaM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhengchao Shao , Paolo Abeni , Sasha Levin Subject: [PATCH 4.14 14/88] ethernet: s2io: disable napi when start nic failed in s2io_card_up() Date: Wed, 23 Nov 2022 09:50:11 +0100 Message-Id: <20221123084549.009994388@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221123084548.535439312@linuxfoundation.org> References: <20221123084548.535439312@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Zhengchao Shao [ Upstream commit 0348c1ab980c1d43fb37b758d4b760990c066cb5 ] When failed to start nic or add interrupt service routine in s2io_card_up() for opening device, napi isn't disabled. When open s2io device next time, it will trigger a BUG_ON()in napi_enable(). Compile tested only. Fixes: 5f490c968056 ("S2io: Fixed synchronization between scheduling of napi with card reset and close") Signed-off-by: Zhengchao Shao Link: https://lore.kernel.org/r/20221109023741.131552-1-shaozhengchao@huawei.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin --- drivers/net/ethernet/neterion/s2io.c | 29 +++++++++++++++++++--------- 1 file changed, 20 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/neterion/s2io.c b/drivers/net/ethernet/neterion/s2io.c index 55538722f6f3..94aabf280768 100644 --- a/drivers/net/ethernet/neterion/s2io.c +++ b/drivers/net/ethernet/neterion/s2io.c @@ -7132,9 +7132,8 @@ static int s2io_card_up(struct s2io_nic *sp) if (ret) { DBG_PRINT(ERR_DBG, "%s: Out of memory in Open\n", dev->name); - s2io_reset(sp); - free_rx_buffers(sp); - return -ENOMEM; + ret = -ENOMEM; + goto err_fill_buff; } DBG_PRINT(INFO_DBG, "Buf in ring:%d is %d:\n", i, ring->rx_bufs_left); @@ -7172,18 +7171,16 @@ static int s2io_card_up(struct s2io_nic *sp) /* Enable Rx Traffic and interrupts on the NIC */ if (start_nic(sp)) { DBG_PRINT(ERR_DBG, "%s: Starting NIC failed\n", dev->name); - s2io_reset(sp); - free_rx_buffers(sp); - return -ENODEV; + ret = -ENODEV; + goto err_out; } /* Add interrupt service routine */ if (s2io_add_isr(sp) != 0) { if (sp->config.intr_type == MSI_X) s2io_rem_isr(sp); - s2io_reset(sp); - free_rx_buffers(sp); - return -ENODEV; + ret = -ENODEV; + goto err_out; } S2IO_TIMER_CONF(sp->alarm_timer, s2io_alarm_handle, sp, (HZ/2)); @@ -7202,6 +7199,20 @@ static int s2io_card_up(struct s2io_nic *sp) } return 0; + +err_out: + if (config->napi) { + if (config->intr_type == MSI_X) { + for (i = 0; i < sp->config.rx_ring_num; i++) + napi_disable(&sp->mac_control.rings[i].napi); + } else { + napi_disable(&sp->napi); + } + } +err_fill_buff: + s2io_reset(sp); + free_rx_buffers(sp); + return ret; } /** -- 2.35.1