Merge branch 'media_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...

[pandora-kernel.git] / drivers / net / stmmac / dwmac100_dma.c

diff --git a/drivers/net/stmmac/dwmac100_dma.c b/drivers/net/stmmac/dwmac100_dma.c
index 2fece7b..e3e224b 100644 (file)
--- a/drivers/net/stmmac/dwmac100_dma.c
+++ b/drivers/net/stmmac/dwmac100_dma.c
@@ -31,14 +31,22 @@
 #include "dwmac100.h"
 #include "dwmac_dma.h"
 
-static int dwmac100_dma_init(unsigned long ioaddr, int pbl, u32 dma_tx,
+static int dwmac100_dma_init(void __iomem *ioaddr, int pbl, u32 dma_tx,
                             u32 dma_rx)
 {
        u32 value = readl(ioaddr + DMA_BUS_MODE);
+       int limit;
+
        /* DMA SW reset */
        value |= DMA_BUS_MODE_SFT_RESET;
        writel(value, ioaddr + DMA_BUS_MODE);
-       do {} while ((readl(ioaddr + DMA_BUS_MODE) & DMA_BUS_MODE_SFT_RESET));
+       limit = 15000;
+       while (limit--) {
+               if (!(readl(ioaddr + DMA_BUS_MODE) & DMA_BUS_MODE_SFT_RESET))
+                       break;
+       }
+       if (limit < 0)
+               return -EBUSY;
 
        /* Enable Application Access by writing to DMA CSR0 */
        writel(DMA_BUS_MODE_DEFAULT | (pbl << DMA_BUS_MODE_PBL_SHIFT),
@@ -58,7 +66,7 @@ static int dwmac100_dma_init(unsigned long ioaddr, int pbl, u32 dma_tx,
 /* Store and Forward capability is not used at all..
  * The transmit threshold can be programmed by
  * setting the TTC bits in the DMA control register.*/
-static void dwmac100_dma_operation_mode(unsigned long ioaddr, int txmode,
+static void dwmac100_dma_operation_mode(void __iomem *ioaddr, int txmode,
                                        int rxmode)
 {
        u32 csr6 = readl(ioaddr + DMA_CONTROL);
@@ -73,7 +81,7 @@ static void dwmac100_dma_operation_mode(unsigned long ioaddr, int txmode,
        writel(csr6, ioaddr + DMA_CONTROL);
 }
 
-static void dwmac100_dump_dma_regs(unsigned long ioaddr)
+static void dwmac100_dump_dma_regs(void __iomem *ioaddr)
 {
        int i;
 
@@ -91,7 +99,7 @@ static void dwmac100_dump_dma_regs(unsigned long ioaddr)
 /* DMA controller has two counters to track the number of
  * the receive missed frames. */
 static void dwmac100_dma_diagnostic_fr(void *data, struct stmmac_extra_stats *x,
-                                      unsigned long ioaddr)
+                                      void __iomem *ioaddr)
 {
        struct net_device_stats *stats = (struct net_device_stats *)data;
        u32 csr8 = readl(ioaddr + DMA_MISSED_FRAME_CTR);
@@ -118,7 +126,7 @@ static void dwmac100_dma_diagnostic_fr(void *data, struct stmmac_extra_stats *x,
        }
 }
 
-struct stmmac_dma_ops dwmac100_dma_ops = {
+const struct stmmac_dma_ops dwmac100_dma_ops = {
        .init = dwmac100_dma_init,
        .dump_regs = dwmac100_dump_dma_regs,
        .dma_mode = dwmac100_dma_operation_mode,