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MSI: Simplify BUG() handling in msi_remove_pci_irq_vectors() part 2 

Although it might be nice to do a printk before BUG'ing, it's really not
necessary, and it complicates the code.

The behaviour has changed slightly, in that before we set a flag if the irq
had an action, and continued freeing the other irqs. But as I see it that's
all irrelevant because we end up BUG'ing anyway.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Michael Ellerman 2007-03-22 21:51:31 +11:00 committed by Greg Kroah-Hartman
parent c31af39870
commit 00ba16ab26
1 changed files with 5 additions and 11 deletions
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16
drivers/pci/msi.c
View File

@ -723,27 +723,21 @@ void msi_remove_pci_irq_vectors(struct pci_dev* dev)
msi_free_irq(dev, dev->first_msi_irq); msi_free_irq(dev, dev->first_msi_irq);
} }
if (dev->msix_enabled) { if (dev->msix_enabled) {
int irq, head, tail = 0, warning = 0; int irq, head, tail = 0;
void __iomem *base = NULL; void __iomem *base = NULL;
irq = head = dev->first_msi_irq; irq = head = dev->first_msi_irq;
while (head != tail) { while (head != tail) {
tail = get_irq_msi(irq)->link.tail; tail = get_irq_msi(irq)->link.tail;
base = get_irq_msi(irq)->mask_base; base = get_irq_msi(irq)->mask_base;
if (irq_has_action(irq))
warning = 1; BUG_ON(irq_has_action(irq));
else if (irq != head) /* Release MSI-X irq */
if (irq != head) /* Release MSI-X irq */
msi_free_irq(dev, irq); msi_free_irq(dev, irq);
irq = tail; irq = tail;
} }
msi_free_irq(dev, irq); msi_free_irq(dev, irq);
if (warning) {
iounmap(base);
printk(KERN_WARNING "PCI: %s: msi_remove_pci_irq_vectors() "
"called without free_irq() on all MSI-X irqs\n",
pci_name(dev));
BUG_ON(warning > 0);
}
} }
} }