From: Aleksandar Radovanovic Date: Tue, 27 Nov 2007 20:35:53 +0000 (+0100) Subject: aec62xx: Fix kernel oops in driver's probe function X-Git-Tag: v2.6.24-rc4~85^2~15 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b48d08177fe635a549aaf63eef508be1de069ebf;p=platform%2Fkernel%2Flinux-3.10.git aec62xx: Fix kernel oops in driver's probe function Add pci_enable_device() to aec62xx probe function before doing any I/O. Original probe function tries to read from device's PCI region 4 before calling ide_setup_pci_device(). Since the device is not enabled at this point, on machines that have no firmware PCI initialization (e.g. ASUS WL-700gE router), corresponding PCI BAR is 0 and the following inb() causes a kernel oops. Signed-off-by: Aleksandar Radovanovic Cc: Linus Torvalds , Signed-off-by: Bartlomiej Zolnierkiewicz --- diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c index 19ec421..4426850 100644 --- a/drivers/ide/pci/aec62xx.c +++ b/drivers/ide/pci/aec62xx.c @@ -260,6 +260,11 @@ static int __devinit aec62xx_init_one(struct pci_dev *dev, const struct pci_devi { struct ide_port_info d; u8 idx = id->driver_data; + int err; + + err = pci_enable_device(dev); + if (err) + return err; d = aec62xx_chipsets[idx]; @@ -272,7 +277,11 @@ static int __devinit aec62xx_init_one(struct pci_dev *dev, const struct pci_devi } } - return ide_setup_pci_device(dev, &d); + err = ide_setup_pci_device(dev, &d); + if (err) + pci_disable_device(dev); + + return err; } static const struct pci_device_id aec62xx_pci_tbl[] = {