From mboxrd@z Thu Jan 1 00:00:00 1970 From: Francois Romieu Subject: [PATCH RFT] bnx2: don't request firmware when there's no userspace. Date: Tue, 30 Aug 2011 09:34:50 +0200 Message-ID: <20110830073450.GA23858@electric-eye.fr.zoreil.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: davem@davemloft.net, netdev@vger.kernel.org To: Michael Chan Return-path: Received: from violet.fr.zoreil.com ([92.243.8.30]:43626 "EHLO violet.fr.zoreil.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751396Ab1H3HxP (ORCPT ); Tue, 30 Aug 2011 03:53:15 -0400 Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: 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 --- Tester(s) needed. There should be a difference of behavior when the driver is included in a monolithic kernel and the firmwares are not included in the vmimage. drivers/net/bnx2.c | 60 ++++++++++++++++++++++++++++++++-------------------- 1 files changed, 37 insertions(+), 23 deletions(-) diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index 4b2b570..fb54afd 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -3649,8 +3649,15 @@ check_mips_fw_entry(const struct firmware *fw, return 0; } +static void bnx2_release_firmware(struct bnx2 *bp) +{ + 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 +3679,13 @@ 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 +3696,30 @@ 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 +6287,10 @@ 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 +6351,8 @@ 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 +6360,8 @@ 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 +8379,6 @@ 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 +8409,6 @@ 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 +8429,6 @@ 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 +8439,8 @@ bnx2_remove_one(struct pci_dev *pdev) bp->flags &= ~BNX2_FLAG_AER_ENABLED; } + bnx2_release_firmware(bp); + free_netdev(dev); pci_release_regions(pdev); -- 1.7.4.4