From patchwork Wed Aug 31 04:48:24 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Francois Romieu X-Patchwork-Id: 112446 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 87A8AB6F7B for ; Wed, 31 Aug 2011 15:07:24 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752731Ab1HaFG5 (ORCPT ); Wed, 31 Aug 2011 01:06:57 -0400 Received: from violet.fr.zoreil.com ([92.243.8.30]:54502 "EHLO violet.fr.zoreil.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752560Ab1HaFG5 (ORCPT ); Wed, 31 Aug 2011 01:06:57 -0400 Received: from violet.fr.zoreil.com (localhost [127.0.0.1]) by violet.fr.zoreil.com (8.13.8/8.13.8) with ESMTP id p7V4mTIW024284; Wed, 31 Aug 2011 06:48:29 +0200 Received: (from romieu@localhost) by violet.fr.zoreil.com (8.13.8/8.13.8/Submit) id p7V4mT45024283; Wed, 31 Aug 2011 06:48:29 +0200 Date: Wed, 31 Aug 2011 06:48:24 +0200 From: Francois Romieu To: Michael Chan Cc: davem@davemloft.net, netdev@vger.kernel.org Subject: [PATCH RFT v2] bnx2: don't request firmware when there's no userspace. Message-ID: <20110831044824.GA24254@electric-eye.fr.zoreil.com> Mime-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.4.2.2i X-Organisation: Land of Sunshine Inc. Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The firmware is cached during the first successful call to open() and released once the network device is unregistered. The driver uses the cached firmware between open() and unregister_netdev(). It's similar to 953a12cc2889d1be92e80a2d0bab5ffef4942300 but the firmware is mandatory. Signed-off-by: Francois Romieu Cc: Michael Chan --- Since v1: conditional release in bnx2_release_firmware. drivers/net/bnx2.c | 62 ++++++++++++++++++++++++++++++++------------------- 1 files changed, 39 insertions(+), 23 deletions(-) diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index 4b2b570..5764333 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -3649,8 +3649,17 @@ check_mips_fw_entry(const struct firmware *fw, return 0; } +static void bnx2_release_firmware(struct bnx2 *bp) +{ + if (bp->rv2p_firmware) { + release_firmware(bp->mips_firmware); + release_firmware(bp->rv2p_firmware); + bp->rv2p_firmware = NULL; + } +} + static int __devinit -bnx2_request_firmware(struct bnx2 *bp) +bnx2_request_uncached_firmware(struct bnx2 *bp) { const char *mips_fw_file, *rv2p_fw_file; const struct bnx2_mips_fw_file *mips_fw; @@ -3672,13 +3681,13 @@ bnx2_request_firmware(struct bnx2 *bp) rc = request_firmware(&bp->mips_firmware, mips_fw_file, &bp->pdev->dev); if (rc) { pr_err("Can't load firmware file \"%s\"\n", mips_fw_file); - return rc; + goto out; } rc = request_firmware(&bp->rv2p_firmware, rv2p_fw_file, &bp->pdev->dev); if (rc) { pr_err("Can't load firmware file \"%s\"\n", rv2p_fw_file); - return rc; + goto err_release_mips_firmware; } mips_fw = (const struct bnx2_mips_fw_file *) bp->mips_firmware->data; rv2p_fw = (const struct bnx2_rv2p_fw_file *) bp->rv2p_firmware->data; @@ -3689,16 +3698,30 @@ bnx2_request_firmware(struct bnx2 *bp) check_mips_fw_entry(bp->mips_firmware, &mips_fw->tpat) || check_mips_fw_entry(bp->mips_firmware, &mips_fw->txp)) { pr_err("Firmware file \"%s\" is invalid\n", mips_fw_file); - return -EINVAL; + rc = -EINVAL; + goto err_release_firmware; } if (bp->rv2p_firmware->size < sizeof(*rv2p_fw) || check_fw_section(bp->rv2p_firmware, &rv2p_fw->proc1.rv2p, 8, true) || check_fw_section(bp->rv2p_firmware, &rv2p_fw->proc2.rv2p, 8, true)) { pr_err("Firmware file \"%s\" is invalid\n", rv2p_fw_file); - return -EINVAL; + rc = -EINVAL; + goto err_release_firmware; } +out: + return rc; - return 0; +err_release_firmware: + release_firmware(bp->rv2p_firmware); + bp->rv2p_firmware = NULL; +err_release_mips_firmware: + release_firmware(bp->mips_firmware); + goto out; +} + +static int bnx2_request_firmware(struct bnx2 *bp) +{ + return bp->rv2p_firmware ? 0 : bnx2_request_uncached_firmware(bp); } static u32 @@ -6266,6 +6289,10 @@ bnx2_open(struct net_device *dev) struct bnx2 *bp = netdev_priv(dev); int rc; + rc = bnx2_request_firmware(bp); + if (rc < 0) + goto out; + netif_carrier_off(dev); bnx2_set_power_state(bp, PCI_D0); @@ -6326,8 +6353,8 @@ bnx2_open(struct net_device *dev) netdev_info(dev, "using MSIX\n"); netif_tx_start_all_queues(dev); - - return 0; +out: + return rc; open_err: bnx2_napi_disable(bp); @@ -6335,7 +6362,8 @@ open_err: bnx2_free_irq(bp); bnx2_free_mem(bp); bnx2_del_napi(bp); - return rc; + bnx2_release_firmware(bp); + goto out; } static void @@ -8353,10 +8381,6 @@ bnx2_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) pci_set_drvdata(pdev, dev); - rc = bnx2_request_firmware(bp); - if (rc) - goto error; - memcpy(dev->dev_addr, bp->mac_addr, 6); memcpy(dev->perm_addr, bp->mac_addr, 6); @@ -8387,11 +8411,6 @@ bnx2_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) return 0; error: - if (bp->mips_firmware) - release_firmware(bp->mips_firmware); - if (bp->rv2p_firmware) - release_firmware(bp->rv2p_firmware); - if (bp->regview) iounmap(bp->regview); pci_release_regions(pdev); @@ -8412,11 +8431,6 @@ bnx2_remove_one(struct pci_dev *pdev) del_timer_sync(&bp->timer); cancel_work_sync(&bp->reset_task); - if (bp->mips_firmware) - release_firmware(bp->mips_firmware); - if (bp->rv2p_firmware) - release_firmware(bp->rv2p_firmware); - if (bp->regview) iounmap(bp->regview); @@ -8427,6 +8441,8 @@ bnx2_remove_one(struct pci_dev *pdev) bp->flags &= ~BNX2_FLAG_AER_ENABLED; } + bnx2_release_firmware(bp); + free_netdev(dev); pci_release_regions(pdev);