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[PATCH] I2O: added pci_request_regions() before using the controller 

Added pci_request_regions() before using the controller to avoid duplicate
usage of the I2O controller when the dpt_i2o driver and I2O subsystem is
loaded at the same time.

Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com>
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Markus Lidel 2005-08-09 14:30:57 -07:00 committed by Linus Torvalds
parent a7df26da15
commit dc9352a42c
1 changed files with 10 additions and 0 deletions
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10
drivers/message/i2o/pci.c
View File

@ -32,6 +32,8 @@
#include <linux/i2o.h> #include <linux/i2o.h>
#include "core.h" #include "core.h"
#define OSM_DESCRIPTION "I2O-subsystem"
/* PCI device id table for all I2O controllers */ /* PCI device id table for all I2O controllers */
static struct pci_device_id __devinitdata i2o_pci_ids[] = { static struct pci_device_id __devinitdata i2o_pci_ids[] = {
{PCI_DEVICE_CLASS(PCI_CLASS_INTELLIGENT_I2O << 8, 0xffff00)}, {PCI_DEVICE_CLASS(PCI_CLASS_INTELLIGENT_I2O << 8, 0xffff00)},
@ -66,6 +68,8 @@ static void i2o_pci_free(struct i2o_controller *c)
if (c->base.virt) if (c->base.virt)
iounmap(c->base.virt); iounmap(c->base.virt);
pci_release_regions(c->pdev);
} }
/** /**
@ -84,6 +88,11 @@ static int __devinit i2o_pci_alloc(struct i2o_controller *c)
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
int i; int i;
if (pci_request_regions(pdev, OSM_DESCRIPTION)) {
printk(KERN_ERR "%s: device already claimed\n", c->name);
return -ENODEV;
}
for (i = 0; i < 6; i++) { for (i = 0; i < 6; i++) {
/* Skip I/O spaces */ /* Skip I/O spaces */
if (!(pci_resource_flags(pdev, i) & IORESOURCE_IO)) { if (!(pci_resource_flags(pdev, i) & IORESOURCE_IO)) {
@ -138,6 +147,7 @@ static int __devinit i2o_pci_alloc(struct i2o_controller *c)
c->base.virt = ioremap_nocache(c->base.phys, c->base.len); c->base.virt = ioremap_nocache(c->base.phys, c->base.len);
if (!c->base.virt) { if (!c->base.virt) {
printk(KERN_ERR "%s: Unable to map controller.\n", c->name); printk(KERN_ERR "%s: Unable to map controller.\n", c->name);
i2o_pci_free(c);
return -ENOMEM; return -ENOMEM;
} }