MSI: Use a list instead of the custom link structure
The msi descriptors are linked together with what looks a lot like
a linked list, but isn't a struct list_head list. Make it one.
The only complication is that previously we walked a list of irqs, and
got the descriptor for each with get_irq_msi(). Now we have a list of
descriptors and need to get the irq out of it, so it needs to be in the
actual struct msi_desc. We use 0 to indicate no irq is setup.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/include/linux/msi.h b/include/linux/msi.h
index d2a2000..931e013 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -1,6 +1,8 @@
#ifndef LINUX_MSI_H
#define LINUX_MSI_H
+#include <linux/list.h>
+
struct msi_msg {
u32 address_lo; /* low 32 bits of msi message address */
u32 address_hi; /* high 32 bits of msi message address */
@@ -24,10 +26,8 @@
unsigned default_irq; /* default pre-assigned irq */
}msi_attrib;
- struct {
- __u16 head;
- __u16 tail;
- }link;
+ unsigned int irq;
+ struct list_head list;
void __iomem *mask_base;
struct pci_dev *dev;