3 files changed, 25 insertions, 6 deletions

diff --git a/arch/sparc64/defconfig b/arch/sparc64/defconfig
index 59eef403c60a..860b8b60526c 100644
--- a/arch/sparc64/defconfig
+++ b/arch/sparc64/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
-# Linux kernel version: 2.6.21-rc1
-# Mon Feb 26 10:45:21 2007
+# Linux kernel version: 2.6.21-rc2
+# Wed Feb 28 09:50:51 2007
 #
 CONFIG_SPARC=y
 CONFIG_SPARC64=y
@@ -1219,6 +1219,7 @@ CONFIG_USB_HIDDEV=y
 # CONFIG_USB_SISUSBVGA is not set
 # CONFIG_USB_LD is not set
 # CONFIG_USB_TRANCEVIBRATOR is not set
+# CONFIG_USB_IOWARRIOR is not set
 # CONFIG_USB_TEST is not set
 
 #
diff --git a/include/asm-sparc64/dma.h b/include/asm-sparc64/dma.h
index 93e5a062df88..1bf4f7a8fbe1 100644
--- a/include/asm-sparc64/dma.h
+++ b/include/asm-sparc64/dma.h
@@ -205,10 +205,6 @@ do {	u32 tmp = sbus_readl((__regs) + DMA_CSR); \
 #define for_each_dvma(dma) \
         for((dma) = dma_chain; (dma); (dma) = (dma)->next)
 
-extern int get_dma_list(char *);
-extern int request_dma(unsigned int, __const__ char *);
-extern void free_dma(unsigned int);
-
 /* From PCI */
 
 #ifdef CONFIG_PCI
diff --git a/include/asm-sparc64/parport.h b/include/asm-sparc64/parport.h
index d3895873e4c7..be9509c8f8c1 100644
--- a/include/asm-sparc64/parport.h
+++ b/include/asm-sparc64/parport.h
@@ -23,8 +23,30 @@ static struct sparc_ebus_info {
         struct ebus_dma_info info;
         unsigned int addr;
         unsigned int count;
+        int lock;
 } sparc_ebus_dmas[PARPORT_PC_MAX_PORTS];
 
+static __inline__ int request_dma(unsigned int dmanr, const char *device_id)
+{
+        if (dmanr >= PARPORT_PC_MAX_PORTS)
+                return -EINVAL;
+        if (xchg(&sparc_ebus_dmas[dmanr].lock, 1) != 0)
+                return -EBUSY;
+        return 0;
+}
+
+static __inline__ void free_dma(unsigned int dmanr)
+{
+        if (dmanr >= PARPORT_PC_MAX_PORTS) {
+                printk(KERN_WARNING "Trying to free DMA%d\n", dmanr);
+                return;
+        }
+        if (xchg(&sparc_ebus_dmas[dmanr].lock, 0) == 0) {
+                printk(KERN_WARNING "Trying to free free DMA%d\n", dmanr);
+                return;
+        }       
+}
+
 static __inline__ void enable_dma(unsigned int dmanr)
 {
         ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 1);