From: David S. Miller <davem@sunset.davemloft.net>
Date: Wed, 28 Feb 2007 21:09:34 +0000 (-0800)
Subject: [SPARC64]: Fix parport_pc build.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=74bd7d093b8e87f35eaf3b14459b96a0e20d1d10;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[SPARC64]: Fix parport_pc build.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/asm-sparc64/dma.h b/include/asm-sparc64/dma.h
index 93e5a062df8..1bf4f7a8fbe 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 d3895873e4c..be9509c8f8c 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);