3 files changed, 56 insertions, 42 deletions

diff --git a/drivers/mmc/mmci.c b/drivers/mmc/mmci.c
index 3a5f6ac5b364..7a42966d755b 100644
--- a/drivers/mmc/mmci.c
+++ b/drivers/mmc/mmci.c
@@ -20,6 +20,7 @@
 #include <linux/mmc/host.h>
 #include <linux/mmc/protocol.h>
 
+#include <asm/div64.h>
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/scatterlist.h>
@@ -70,6 +71,7 @@ static void mmci_stop_data(struct mmci_host *host)
 static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
 {
         unsigned int datactrl, timeout, irqmask;
+        unsigned long long clks;
         void __iomem *base;
 
         DBG(host, "blksz %04x blks %04x flags %08x\n",
@@ -81,9 +83,10 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
 
         mmci_init_sg(host, data);
 
-        timeout = data->timeout_clks +
-                  ((unsigned long long)data->timeout_ns * host->cclk) /
-                   1000000000ULL;
+        clks = (unsigned long long)data->timeout_ns * host->cclk;
+        do_div(clks, 1000000000UL);
+
+        timeout = data->timeout_clks + (unsigned int)clks;
 
         base = host->base;
         writel(timeout, base + MMCIDATATIMER);
diff --git a/drivers/mmc/wbsd.c b/drivers/mmc/wbsd.c
index b7fbd30b49a0..0c41d4b41a65 100644
--- a/drivers/mmc/wbsd.c
+++ b/drivers/mmc/wbsd.c
@@ -54,28 +54,6 @@
 #define DBGF(x...)      do { } while (0)
 #endif
 
-#ifdef CONFIG_MMC_DEBUG
-void DBG_REG(int reg, u8 value)
-{
-        int i;
-        
-        printk(KERN_DEBUG "wbsd: Register %d: 0x%02X %3d '%c' ",
-                reg, (int)value, (int)value, (value < 0x20)?'.':value);
-        
-        for (i = 7;i >= 0;i--)
-        {
-                if (value & (1 << i))
-                        printk("x");
-                else
-                        printk(".");
-        }
-        
-        printk("\n");
-}
-#else
-#define DBG_REG(r, v) do {}  while (0)
-#endif
-
 /*
  * Device resources
  */
@@ -92,6 +70,13 @@ MODULE_DEVICE_TABLE(pnp, pnp_dev_table);
 
 #endif /* CONFIG_PNP */
 
+static const int config_ports[] = { 0x2E, 0x4E };
+static const int unlock_codes[] = { 0x83, 0x87 };
+
+static const int valid_ids[] = {
+        0x7112,
+        };
+
 #ifdef CONFIG_PNP
 static unsigned int nopnp = 0;
 #else
@@ -1051,6 +1036,20 @@ static struct mmc_host_ops wbsd_ops = {
 \*****************************************************************************/
 
 /*
+ * Helper function for card detection
+ */
+static void wbsd_detect_card(unsigned long data)
+{
+        struct wbsd_host *host = (struct wbsd_host*)data;
+        
+        BUG_ON(host == NULL);
+        
+        DBG("Executing card detection\n");
+        
+        mmc_detect_change(host->mmc);   
+}
+
+/*
  * Tasklets
  */
 
@@ -1075,7 +1074,6 @@ static void wbsd_tasklet_card(unsigned long param)
 {
         struct wbsd_host* host = (struct wbsd_host*)param;
         u8 csr;
-        int change = 0;
         
         spin_lock(&host->lock);
         
@@ -1094,14 +1092,20 @@ static void wbsd_tasklet_card(unsigned long param)
                 {
                         DBG("Card inserted\n");
                         host->flags |= WBSD_FCARD_PRESENT;
-                        change = 1;
+                        
+                        /*
+                         * Delay card detection to allow electrical connections
+                         * to stabilise.
+                         */
+                        mod_timer(&host->timer, jiffies + HZ/2);
                 }
+                
+                spin_unlock(&host->lock);
         }
         else if (host->flags & WBSD_FCARD_PRESENT)
         {
                 DBG("Card removed\n");
                 host->flags &= ~WBSD_FCARD_PRESENT;
-                change = 1;
                 
                 if (host->mrq)
                 {
@@ -1112,15 +1116,14 @@ static void wbsd_tasklet_card(unsigned long param)
                         host->mrq->cmd->error = MMC_ERR_FAILED;
                         tasklet_schedule(&host->finish_tasklet);
                 }
-        }
-        
-        /*
-         * Unlock first since we might get a call back.
-         */
-        spin_unlock(&host->lock);
+                
+                /*
+                 * Unlock first since we might get a call back.
+                 */
+                spin_unlock(&host->lock);
 
-        if (change)
                 mmc_detect_change(host->mmc);
+        }
 }
 
 static void wbsd_tasklet_fifo(unsigned long param)
@@ -1325,6 +1328,13 @@ static int __devinit wbsd_alloc_mmc(struct device* dev)
         spin_lock_init(&host->lock);
         
         /*
+         * Set up detection timer
+         */
+        init_timer(&host->timer);
+        host->timer.data = (unsigned long)host;
+        host->timer.function = wbsd_detect_card;
+        
+        /*
          * Maximum number of segments. Worst case is one sector per segment
          * so this will be 64kB/512.
          */
@@ -1351,11 +1361,17 @@ static int __devinit wbsd_alloc_mmc(struct device* dev)
 static void __devexit wbsd_free_mmc(struct device* dev)
 {
         struct mmc_host* mmc;
+        struct wbsd_host* host;
         
         mmc = dev_get_drvdata(dev);
         if (!mmc)
                 return;
         
+        host = mmc_priv(mmc);
+        BUG_ON(host == NULL);
+        
+        del_timer_sync(&host->timer);
+        
         mmc_free_host(mmc);
         
         dev_set_drvdata(dev, NULL);
diff --git a/drivers/mmc/wbsd.h b/drivers/mmc/wbsd.h
index 864f30828d01..661a9f6a6e6f 100644
--- a/drivers/mmc/wbsd.h
+++ b/drivers/mmc/wbsd.h
@@ -8,13 +8,6 @@
  * published by the Free Software Foundation.
  */
 
-const int config_ports[] = { 0x2E, 0x4E };
-const int unlock_codes[] = { 0x83, 0x87 };
-
-const int valid_ids[] = {
-        0x7112,
-        };
-
 #define LOCK_CODE               0xAA
 
 #define WBSD_CONF_SWRST         0x02
@@ -187,4 +180,6 @@ struct wbsd_host
         struct tasklet_struct   timeout_tasklet;
         struct tasklet_struct   finish_tasklet;
         struct tasklet_struct   block_tasklet;
+        
+        struct timer_list       timer;          /* Card detection timer */
 };