[PATCH] genirq: msi: make the msi boolean tests return either 0 or 1

This allows the output of the msi tests to be stored directly in a bit field.
If you don't do this a value greater than one will be truncated and become 0.
Changing true to false with bizare consequences.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rajesh Shah <rajesh.shah@intel.com>
Cc: Andi Kleen <ak@muc.de>
Cc: "Protasevich, Natalie" <Natalie.Protasevich@UNISYS.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/pci/msi.h b/drivers/pci/msi.h
index 56951c3..9b31d4c 100644 (file)
--- a/drivers/pci/msi.h
+++ b/drivers/pci/msi.h
@@ -110,8 +110,8 @@ extern int pci_vector_resources(int last, int nr_released);
        (1 << ((control & PCI_MSI_FLAGS_QMASK) >> 1))
 #define multi_msi_enable(control, num) \
        control |= (((num >> 1) << 4) & PCI_MSI_FLAGS_QSIZE);
-#define is_64bit_address(control)      (control & PCI_MSI_FLAGS_64BIT)
-#define is_mask_bit_support(control)   (control & PCI_MSI_FLAGS_MASKBIT)
+#define is_64bit_address(control)      (!!(control & PCI_MSI_FLAGS_64BIT))
+#define is_mask_bit_support(control)   (!!(control & PCI_MSI_FLAGS_MASKBIT))
 #define msi_enable(control, num) multi_msi_enable(control, num); \
        control |= PCI_MSI_FLAGS_ENABLE