openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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 <biblbroks@sezampro.yu>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Aleksandar Radovanovic 2007-11-27 21:35:53 +01:00 committed by Bartlomiej Zolnierkiewicz
parent 8266105b15
commit b48d08177f
1 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/ide/pci/aec62xx.c
View File

@ -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[] = {