[ARM] dma: move RiscPC specific DMA data out of dma_struct

Separate the RiscPC specific (IOMD and floppy FIQ) data out of the core
DMA structure by making the IOMD and floppy DMA supersets.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 13 insertions, 5 deletions

diff --git a/arch/arm/include/asm/mach/dma.h b/arch/arm/include/asm/mach/dma.h
index 38a3693f1258..4326738ff36f 100644
--- a/arch/arm/include/asm/mach/dma.h
+++ b/arch/arm/include/asm/mach/dma.h
@@ -40,14 +40,22 @@ struct dma_struct {
         unsigned int    lock;           /* Device is allocated          */
         const char      *device_id;     /* Device name                  */
 
-        unsigned int    dma_base;       /* Controller base address      */
-        int             dma_irq;        /* Controller IRQ               */
-        struct scatterlist cur_sg;      /* Current controller buffer    */
-        unsigned int    state;
-
         struct dma_ops  *d_ops;
 };
 
+struct floppy_dma {
+        struct dma_struct       dma;
+        unsigned int            fiq;
+};
+
+struct iomd_dma {
+        struct dma_struct       dma;
+        unsigned int            state;
+        unsigned long           base;           /* Controller base address */
+        int                     irq;            /* Controller IRQ */
+        struct scatterlist      cur_sg;         /* Current controller buffer */
+};
+
 /*
  * isa_dma_add - add an ISA-style DMA channel
  */