[PATCH] PC300 pci_enable_device fix
Call pci_enable_device() before looking at IRQ and resources,
and pci_disable_device() when shutting the interface down.
The driver requires this fix or the "pci=routeirq" workaround
on 2.6.10 and later kernels.
Reported and tested by Artur Lipowski.
From: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/net/wan/pc300_drv.c b/drivers/net/wan/pc300_drv.c
index d67be25..3e7753b 100644
--- a/drivers/net/wan/pc300_drv.c
+++ b/drivers/net/wan/pc300_drv.c
@@ -3427,7 +3427,7 @@
{
static int first_time = 1;
ucchar cpc_rev_id;
- int err = 0, eeprom_outdated = 0;
+ int err, eeprom_outdated = 0;
ucshort device_id;
pc300_t *card;
@@ -3439,15 +3439,21 @@
#endif
}
+ if ((err = pci_enable_device(pdev)) < 0)
+ return err;
+
card = (pc300_t *) kmalloc(sizeof(pc300_t), GFP_KERNEL);
if (card == NULL) {
printk("PC300 found at RAM 0x%08lx, "
"but could not allocate card structure.\n",
pci_resource_start(pdev, 3));
- return -ENOMEM;
+ err = -ENOMEM;
+ goto err_disable_dev;
}
memset(card, 0, sizeof(pc300_t));
+ err = -ENODEV;
+
/* read PCI configuration area */
device_id = ent->device;
card->hw.irq = pdev->irq;
@@ -3507,7 +3513,6 @@
printk("PC300 found at RAM 0x%08x, "
"but could not allocate PLX mem region.\n",
card->hw.ramphys);
- err = -ENODEV;
goto err_release_io;
}
if (!request_mem_region(card->hw.ramphys, card->hw.alloc_ramsize,
@@ -3515,7 +3520,6 @@
printk("PC300 found at RAM 0x%08x, "
"but could not allocate RAM mem region.\n",
card->hw.ramphys);
- err = -ENODEV;
goto err_release_plx;
}
if (!request_mem_region(card->hw.scaphys, card->hw.scasize,
@@ -3523,13 +3527,9 @@
printk("PC300 found at RAM 0x%08x, "
"but could not allocate SCA mem region.\n",
card->hw.ramphys);
- err = -ENODEV;
goto err_release_ram;
}
- if ((err = pci_enable_device(pdev)) != 0)
- goto err_release_sca;
-
card->hw.plxbase = ioremap(card->hw.plxphys, card->hw.plxsize);
card->hw.rambase = ioremap(card->hw.ramphys, card->hw.alloc_ramsize);
card->hw.scabase = ioremap(card->hw.scaphys, card->hw.scasize);
@@ -3619,7 +3619,6 @@
iounmap(card->hw.falcbase);
release_mem_region(card->hw.falcphys, card->hw.falcsize);
}
-err_release_sca:
release_mem_region(card->hw.scaphys, card->hw.scasize);
err_release_ram:
release_mem_region(card->hw.ramphys, card->hw.alloc_ramsize);
@@ -3628,7 +3627,9 @@
err_release_io:
release_region(card->hw.iophys, card->hw.iosize);
kfree(card);
- return -ENODEV;
+err_disable_dev:
+ pci_disable_device(pdev);
+ return err;
}
static void __devexit cpc_remove_one(struct pci_dev *pdev)
@@ -3662,6 +3663,7 @@
if (card->hw.irq)
free_irq(card->hw.irq, card);
kfree(card);
+ pci_disable_device(pdev);
}
}