ssb: add dma_dev to ssb_device structure

Add dma_dev, a pointer to struct device, to struct ssb_device.  We pass it
to the generic DMA API with SSB_BUSTYPE_PCI and SSB_BUSTYPE_SSB.
ssb_devices_register() sets up it properly.

This is preparation for replacing the ssb bus specific DMA API (ssb_dma_*)
with the generic DMA API.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Michael Buesch <mb@bu3sch.de>
Cc: Gary Zambrano <zambrano@broadcom.com>
Cc: Stefano Brivio <stefano.brivio@polimi.it>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: John W. Linville <linville@tuxdriver.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 3 insertions, 1 deletions

diff --git a/drivers/ssb/main.c b/drivers/ssb/main.c
index 51275aac5b34..a732b396e602 100644
--- a/drivers/ssb/main.c
+++ b/drivers/ssb/main.c
@@ -486,6 +486,7 @@ static int ssb_devices_register(struct ssb_bus *bus)
 #ifdef CONFIG_SSB_PCIHOST
                         sdev->irq = bus->host_pci->irq;
                         dev->parent = &bus->host_pci->dev;
+                        sdev->dma_dev = dev->parent;
 #endif
                         break;
                 case SSB_BUSTYPE_PCMCIA:
@@ -501,6 +502,7 @@ static int ssb_devices_register(struct ssb_bus *bus)
                         break;
                 case SSB_BUSTYPE_SSB:
                         dev->dma_mask = &dev->coherent_dma_mask;
+                        sdev->dma_dev = dev;
                         break;
                 }
 
diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h
index a2608bff9c78..0d5f04316b35 100644
--- a/include/linux/ssb/ssb.h
+++ b/include/linux/ssb/ssb.h
@@ -167,7 +167,7 @@ struct ssb_device {
          * is an optimization. */
         const struct ssb_bus_ops *ops;
 
-        struct device *dev;
+        struct device *dev, *dma_dev;
 
         struct ssb_bus *bus;
         struct ssb_device_id id;