Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932203Ab0KLLOv (ORCPT ); Fri, 12 Nov 2010 06:14:51 -0500 Received: from exprod5og112.obsmtp.com ([64.18.0.24]:40305 "EHLO exprod5og112.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932182Ab0KLLOt (ORCPT ); Fri, 12 Nov 2010 06:14:49 -0500 Subject: [PATCH 07/17] staging/vme/tsi148: fix warning in free_irq To: Greg KH From: Martyn Welch Cc: devel@driverdev.osuosl.org, Juan David Gonzalez Cobas , "Emilio G. Cota" , LKML , Bill Pemberton Date: Fri, 12 Nov 2010 11:14:47 +0000 Message-ID: <20101112111447.11631.53375.stgit@ES-BJ21R4J> In-Reply-To: <20101112111359.11631.84086.stgit@ES-BJ21R4J> References: <20101112111359.11631.84086.stgit@ES-BJ21R4J> User-Agent: StGit/0.15 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3503 Lines: 91 From: Emilio G. Cota The cookie passed to request_irq isn't the same as the one passed to free_irq, which results in the following warning: [ 63.243533] WARNING: at kernel/irq/manage.c:899 __free_irq+0x9b/0x17d() [ 63.243533] Hardware name: [ 63.243533] Trying to free already-free IRQ 17 [ 63.243533] Modules linked in: vme_tsi148(-) vme e1000e iTCO_wdt iTCO_vendor_support [last unloaded: scsi_wait_scan] [ 63.243533] Pid: 2013, comm: rmmod Not tainted 2.6.35 #2 [ 63.243533] Call Trace: [ 63.243533] [] warn_slowpath_common+0x80/0x98 [ 63.243533] [] warn_slowpath_fmt+0x41/0x43 [ 63.243533] [] __free_irq+0x9b/0x17d [ 63.243533] [] free_irq+0x33/0x4e [ 63.243533] [] tsi148_irq_exit+0x6b/0x70 [vme_tsi148] [...] [ 63.243533] ---[ end trace bbf92311d969efb4 ]--- Fix it by passing the same cookie to both functions. Signed-off-by: Emilio G. Cota [martyn.welch@ge.com: modified to remove checkpatch warnings] Signed-off-by: Martyn Welch --- drivers/staging/vme/bridges/Module.symvers | 0 drivers/staging/vme/bridges/vme_tsi148.c | 11 +++++++---- 2 files changed, 7 insertions(+), 4 deletions(-) create mode 100644 drivers/staging/vme/bridges/Module.symvers diff --git a/drivers/staging/vme/bridges/Module.symvers b/drivers/staging/vme/bridges/Module.symvers new file mode 100644 index 0000000..e69de29 diff --git a/drivers/staging/vme/bridges/vme_tsi148.c b/drivers/staging/vme/bridges/vme_tsi148.c index 2f8f399..70c9e41 100644 --- a/drivers/staging/vme/bridges/vme_tsi148.c +++ b/drivers/staging/vme/bridges/vme_tsi148.c @@ -374,8 +374,11 @@ static int tsi148_irq_init(struct vme_bridge *tsi148_bridge) return 0; } -static void tsi148_irq_exit(struct tsi148_driver *bridge, struct pci_dev *pdev) +static void tsi148_irq_exit(struct vme_bridge *tsi148_bridge, + struct pci_dev *pdev) { + struct tsi148_driver *bridge = tsi148_bridge->driver_priv; + /* Turn off interrupts */ iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEO); iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEN); @@ -384,7 +387,7 @@ static void tsi148_irq_exit(struct tsi148_driver *bridge, struct pci_dev *pdev) iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_INTC); /* Detach interrupt handler */ - free_irq(pdev->irq, pdev); + free_irq(pdev->irq, tsi148_bridge); } /* @@ -2511,7 +2514,7 @@ err_master: kfree(master_image); } - tsi148_irq_exit(tsi148_device, pdev); + tsi148_irq_exit(tsi148_bridge, pdev); err_irq: err_test: iounmap(tsi148_device->base); @@ -2583,7 +2586,7 @@ static void tsi148_remove(struct pci_dev *pdev) iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM1); iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM2); - tsi148_irq_exit(bridge, pdev); + tsi148_irq_exit(tsi148_bridge, pdev); vme_unregister_bridge(tsi148_bridge); -- Martyn Welch (Principal Software Engineer) | Registered in England and GE Intelligent Platforms | Wales (3828642) at 100 T +44(0)127322748 | Barbirolli Square, Manchester, E martyn.welch@ge.com | M2 3AB VAT:GB 927559189 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/