[SPARC64]: Fix parport_pc build.

[powerpc.git] / include / asm-sparc64 / parport.h

diff --git a/include/asm-sparc64/parport.h b/include/asm-sparc64/parport.h
index d389587..be9509c 100644 (file)
--- 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);