From dc9352a42c6de578c932313448257cf246b2b75f Mon Sep 17 00:00:00 2001 From: Markus Lidel Date: Tue, 9 Aug 2005 14:30:57 -0700 Subject: [PATCH] [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 Cc: James Bottomley Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/message/i2o/pci.c | 10 ++++++++++ 1 file changed, 10 insertions(+) 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 #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; } -- 2.41.1