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authorMarkus Lidel <Markus.Lidel@shadowconnect.com>2005-08-09 14:30:57 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-08-09 17:59:52 -0700
commitdc9352a42c6de578c932313448257cf246b2b75f (patch)
treecc0a26be95e1a93e675bbe40dd7528db7ed2baa1 /drivers/message
parenta7df26da158ad64d56cc32934aa38a07d03a6fc9 (diff)
[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>
Diffstat (limited to 'drivers/message')
-rw-r--r--drivers/message/i2o/pci.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/message/i2o/pci.c b/drivers/message/i2o/pci.c
index 7a60fd7be8a..66c03e88257 100644
--- a/drivers/message/i2o/pci.c
+++ b/drivers/message/i2o/pci.c
@@ -32,6 +32,8 @@
#include <linux/i2o.h>
#include "core.h"
+#define OSM_DESCRIPTION "I2O-subsystem"
+
/* PCI device id table for all I2O controllers */
static struct pci_device_id __devinitdata i2o_pci_ids[] = {
{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)
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;
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++) {
/* Skip I/O spaces */
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);
if (!c->base.virt) {
printk(KERN_ERR "%s: Unable to map controller.\n", c->name);
+ i2o_pci_free(c);
return -ENOMEM;
}