I/OAT: Add support for MSI and MSI-X

Add support for MSI and MSI-X interrupt handling, including the ability
to choose the desired interrupt method.

Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
[bunk@kernel.org: drivers/dma/ioat_dma.c: make 3 functions static]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 638165f571da..b9fb8ee3308b 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -8,6 +8,12 @@
  */
 #include <asm/bitops.h>
 
+#define for_each_bit(bit, addr, size) \
+        for ((bit) = find_first_bit((addr), (size)); \
+             (bit) < (size); \
+             (bit) = find_next_bit((addr), (size), (bit) + 1))
+
+
 static __inline__ int get_bitmask_order(unsigned int count)
 {
         int order;