move dma_mask into struct device

Attached is a patch which moves dma_mask into struct device and cleans up the 
scsi mid-layer to use it (instead of using struct pci_dev).  The advantage to 
doing this is probably most apparent on non-pci bus architectures where 
currently you have to construct a fake pci_dev just so you can get the bounce 
buffers to work correctly.
  
The patch tries to perturb the minimum amount of code, so dma_mask in struct 
device is simply a pointer to the one in pci_dev.  However, it will make it 
easy for me now to add generic device to MCA without having to go the fake pci
route.

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 6ce7d11cc8f9..44262d7f34c3 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -303,6 +303,7 @@ struct device {
 					   being off. */
 
 	unsigned char *saved_state;	/* saved device state */
+	u64		*dma_mask;	/* dma mask (if dma'able device) */
 
 	void	(*release)(struct device * dev);
 };