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MSI: Remove dev->first_msi_irq

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Now that we keep a list of msi descriptors, we don't need first_msi_irq
in the pci dev.

If we somehow have zero MSIs configured list_entry() will give us weird
oopes or nice memory corruption bugs. So be paranoid. Add BUG_ONs and also
a check in pci_msi_check_device() to make sure nvec > 0.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Michael Ellerman 2007-04-05 17:19:12 +10:00 • committed by Greg Kroah-Hartman
parent 4aa9bc955d
commit 314e77b3ee
2 changed files with 20 additions and 12 deletions
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1
include/linux/pci.h
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@ -189,7 +189,6 @@ struct pci_dev {
int rom_attr_enabled; /* has display of the rom attribute been enabled? */
struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
#ifdef CONFIG_PCI_MSI
unsigned int first_msi_irq;
struct list_head msi_list;
#endif
};