[ARM] Move ISA DMA bus_to_virt() out of set_dma_addr()
Allow the compiler to optimise the bus_to_virt(virt_to_bus())
transformation in the ARM ISA DMA interface.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/kernel/dma.c b/arch/arm/kernel/dma.c
index 8d6381c..3aedada 100644
--- a/arch/arm/kernel/dma.c
+++ b/arch/arm/kernel/dma.c
@@ -131,7 +131,7 @@
*
* Copy address to the structure, and set the invalid bit
*/
-void set_dma_addr (dmach_t channel, unsigned long physaddr)
+void __set_dma_addr (dmach_t channel, void *addr)
{
dma_t *dma = dma_chan + channel;
@@ -141,7 +141,7 @@
dma->sg = &dma->buf;
dma->sgcount = 1;
- dma->buf.__address = bus_to_virt(physaddr);
+ dma->buf.__address = addr;
dma->using_sg = 0;
dma->invalid = 1;
}
@@ -278,7 +278,7 @@
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_addr, get_dma_residue);
GLOBAL_ALIAS(set_dma_sg, get_dma_residue);
GLOBAL_ALIAS(set_dma_speed, get_dma_residue);
GLOBAL_ALIAS(init_dma, get_dma_residue);
@@ -289,7 +289,7 @@
EXPORT_SYMBOL(free_dma);
EXPORT_SYMBOL(enable_dma);
EXPORT_SYMBOL(disable_dma);
-EXPORT_SYMBOL(set_dma_addr);
+EXPORT_SYMBOL(__set_dma_addr);
EXPORT_SYMBOL(set_dma_count);
EXPORT_SYMBOL(set_dma_mode);
EXPORT_SYMBOL(set_dma_page);
diff --git a/include/asm-arm/dma.h b/include/asm-arm/dma.h
index ef41df43a..1c7087f 100644
--- a/include/asm-arm/dma.h
+++ b/include/asm-arm/dma.h
@@ -91,7 +91,9 @@
* especially since some DMA architectures don't update the
* DMA address immediately, but defer it to the enable_dma().
*/
-extern void set_dma_addr(dmach_t channel, unsigned long physaddr);
+extern void __set_dma_addr(dmach_t channel, void *addr);
+#define set_dma_addr(channel, addr) \
+ __set_dma_addr(channel, bus_to_virt(addr))
/* Set the DMA byte count for this channel
*