19c38de88a
A number of different drivers incorrect access the kobject name field directly. This is not correct as the name might not be in the array. Use the proper accessor function instead.
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/*
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* drivers/pci/setup-irq.c
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*
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* Extruded from code written by
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* Dave Rusling (david.rusling@reo.mts.dec.com)
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* David Mosberger (davidm@cs.arizona.edu)
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* David Miller (davem@redhat.com)
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*
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* Support routines for initializing a PCI subsystem.
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/cache.h>
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static void __init
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pdev_fixup_irq(struct pci_dev *dev,
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u8 (*swizzle)(struct pci_dev *, u8 *),
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int (*map_irq)(struct pci_dev *, u8, u8))
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{
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u8 pin, slot;
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int irq = 0;
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/* If this device is not on the primary bus, we need to figure out
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which interrupt pin it will come in on. We know which slot it
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will come in on 'cos that slot is where the bridge is. Each
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time the interrupt line passes through a PCI-PCI bridge we must
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apply the swizzle function. */
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pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
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/* Cope with illegal. */
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if (pin > 4)
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pin = 1;
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if (pin != 0) {
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/* Follow the chain of bridges, swizzling as we go. */
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slot = (*swizzle)(dev, &pin);
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irq = (*map_irq)(dev, slot, pin);
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if (irq == -1)
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irq = 0;
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}
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dev->irq = irq;
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pr_debug("PCI: fixup irq: (%s) got %d\n",
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kobject_name(&dev->dev.kobj), dev->irq);
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/* Always tell the device, so the driver knows what is
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the real IRQ to use; the device does not use it. */
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pcibios_update_irq(dev, irq);
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}
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void __init
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pci_fixup_irqs(u8 (*swizzle)(struct pci_dev *, u8 *),
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int (*map_irq)(struct pci_dev *, u8, u8))
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{
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struct pci_dev *dev = NULL;
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while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
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pdev_fixup_irq(dev, swizzle, map_irq);
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}
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}
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