[ARM] Remove definition of MAX_DMA_CHANNELS to zero

Since we now only build arch/arm/kernel/dma.c on machine types
which set ISA_DMA_API, we don't need to define MAX_DMA_CHANNELS
to 0 to indicate this - this definition becomes superfluous.
Remove it.

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

arch/arm/kernel/dma.c

@@ -22,8 +22,6 @@
 
 DEFINE_SPINLOCK(dma_spin_lock);
 
-#if MAX_DMA_CHANNELS > 0
-
 static dma_t dma_chan[MAX_DMA_CHANNELS];
 
 /*
@@ -256,32 +254,6 @@ static int __init init_dma(void)
 
 core_initcall(init_dma);
 
-#else
-
-int request_dma(dmach_t channel, const char *device_id)
-{
-	return -EINVAL;
-}
-
-int get_dma_residue(dmach_t channel)
-{
-	return 0;
-}
-
-#define GLOBAL_ALIAS(_a,_b) asm (".set " #_a "," #_b "; .globl " #_a)
-GLOBAL_ALIAS(disable_dma, get_dma_residue);
-GLOBAL_ALIAS(enable_dma, get_dma_residue);
-GLOBAL_ALIAS(free_dma, get_dma_residue);
-GLOBAL_ALIAS(get_dma_list, get_dma_residue);
-GLOBAL_ALIAS(set_dma_mode, get_dma_residue);
-GLOBAL_ALIAS(set_dma_page, get_dma_residue);
-GLOBAL_ALIAS(set_dma_count, get_dma_residue);
-GLOBAL_ALIAS(__set_dma_addr, get_dma_residue);
-GLOBAL_ALIAS(set_dma_sg, get_dma_residue);
-GLOBAL_ALIAS(set_dma_speed, get_dma_residue);
-
-#endif
-
 EXPORT_SYMBOL(request_dma);
 EXPORT_SYMBOL(free_dma);
 EXPORT_SYMBOL(enable_dma);

include/asm-arm/arch-aaec2000/dma.h

@@ -7,10 +7,3 @@
  *  it under the terms of the GNU General Public License version 2 as
  *  published by the Free Software Foundation.
  */
-
-#ifndef __ASM_ARCH_DMA_H
-#define __ASM_ARCH_DMA_H
-
-#define MAX_DMA_CHANNELS        0
-
-#endif

include/asm-arm/arch-cl7500/dma.h

@@ -15,7 +15,6 @@
  * bytes of RAM.
  */
 #define MAX_DMA_ADDRESS		0xd0000000
-#define MAX_DMA_CHANNELS	0
 
 #define DMA_S0			0
 

include/asm-arm/arch-clps711x/dma.h

@@ -17,10 +17,3 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
-#ifndef __ASM_ARCH_DMA_H
-#define __ASM_ARCH_DMA_H
-
-#define MAX_DMA_CHANNELS	0
-
-#endif /* _ASM_ARCH_DMA_H */
-

include/asm-arm/arch-ebsa110/dma.h

@@ -9,10 +9,3 @@
  *
  *  EBSA110 DMA definitions
  */
-#ifndef __ASM_ARCH_DMA_H
-#define __ASM_ARCH_DMA_H
-
-#define MAX_DMA_CHANNELS	0
-
-#endif /* _ASM_ARCH_DMA_H */
-

include/asm-arm/arch-epxa10db/dma.h

@@ -17,10 +17,3 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
-#ifndef __ASM_ARCH_DMA_H
-#define __ASM_ARCH_DMA_H
-
-#define MAX_DMA_CHANNELS	0
-
-#endif /* _ASM_ARCH_DMA_H */
-

include/asm-arm/arch-imx/dma.h

@@ -20,8 +20,6 @@
 #ifndef __ASM_ARCH_DMA_H
 #define __ASM_ARCH_DMA_H
 
-#define MAX_DMA_CHANNELS	0
-
 /*
  * DMA registration
  */

include/asm-arm/arch-integrator/dma.h

@@ -17,10 +17,3 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
-#ifndef __ASM_ARCH_DMA_H
-#define __ASM_ARCH_DMA_H
-
-#define MAX_DMA_CHANNELS	0
-
-#endif /* _ASM_ARCH_DMA_H */
-

include/asm-arm/arch-iop3xx/dma.h

@@ -7,8 +7,3 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-
-#ifndef _IOP3XX_DMA_H_P
-#define _IOP3XX_DMA_H_P
-
-#endif /* _ASM_ARCH_DMA_H_P */

include/asm-arm/arch-ixp2000/dma.h

@@ -7,10 +7,3 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
-#ifndef __ASM_ARCH_DMA_H
-#define __ASM_ARCH_DMA_H
-
-/* No DMA */
-#define MAX_DMA_CHANNELS	0
-
-#endif /* _ASM_ARCH_DMA_H */

include/asm-arm/arch-ixp4xx/dma.h

@@ -20,7 +20,4 @@
 
 #define MAX_DMA_ADDRESS		(PAGE_OFFSET + SZ_64M)
 
-/* No DMA */
-#define MAX_DMA_CHANNELS	0
-
 #endif /* _ASM_ARCH_DMA_H */

include/asm-arm/arch-l7200/dma.h

@@ -17,7 +17,6 @@
  * bytes of RAM.
  */
 #define MAX_DMA_ADDRESS         0xd0000000
-#define MAX_DMA_CHANNELS        0
 
 #define DMA_S0                  0
 

include/asm-arm/arch-lh7a40x/dma.h

@@ -7,10 +7,3 @@
  *  version 2 as published by the Free Software Foundation.
  *
  */
-
-#ifndef __ASM_ARCH_DMA_H
-#define __ASM_ARCH_DMA_H
-
-#define MAX_DMA_CHANNELS	0 /* All DMA is internal to CPU */
-
-#endif /* _ASM_ARCH_DMA_H */

include/asm-arm/arch-omap/dma.h

@@ -21,8 +21,6 @@
 #ifndef __ASM_ARCH_DMA_H
 #define __ASM_ARCH_DMA_H
 
-#define MAX_DMA_CHANNELS		0
-
 /* Hardware registers for omap1 */
 #define OMAP_DMA_BASE			(0xfffed800)
 #define OMAP_DMA_GCR			(OMAP_DMA_BASE + 0x400)

include/asm-arm/arch-pxa/dma.h

@@ -12,9 +12,6 @@
 #ifndef __ASM_ARCH_DMA_H
 #define __ASM_ARCH_DMA_H
 
-/* No DMA as the rest of the world see it */
-#define MAX_DMA_CHANNELS	0
-
 /*
  * Descriptor structure for PXA's DMA engine
  * Note: this structure must always be aligned to a 16-byte boundary.

include/asm-arm/arch-realview/dma.h

@@ -18,9 +18,3 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
-#ifndef __ASM_ARCH_DMA_H
-#define __ASM_ARCH_DMA_H
-
-#define MAX_DMA_CHANNELS	0
-
-#endif /* _ASM_ARCH_DMA_H */

include/asm-arm/arch-s3c2410/dma.h

@@ -31,14 +31,6 @@
 #define MAX_DMA_TRANSFER_SIZE   0x100000 /* Data Unit is half word  */
 
 
-/* according to the samsung port, we cannot use the regular
- * dma channels... we must therefore provide our own interface
- * for DMA, and allow our drivers to use that.
- */
-
-#define MAX_DMA_CHANNELS	0
-
-
 /* we have 4 dma channels */
 #define S3C2410_DMA_CHANNELS        (4)
 

include/asm-arm/arch-sa1100/dma.h

@@ -14,14 +14,6 @@
 #include "hardware.h"
 
 
-/*
- * The regular generic DMA interface is inappropriate for the
- * SA1100 DMA model.  None of the SA1100 specific drivers using
- * DMA are portable anyway so it's pointless to try to twist the
- * regular DMA API to accommodate them.
- */
-#define MAX_DMA_CHANNELS	0
-
 /*
  * The SA1100 has six internal DMA channels.
  */

include/asm-arm/arch-versatile/dma.h

@@ -18,9 +18,3 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
-#ifndef __ASM_ARCH_DMA_H
-#define __ASM_ARCH_DMA_H
-
-#define MAX_DMA_CHANNELS	0
-
-#endif /* _ASM_ARCH_DMA_H */