[MMC] Add mmc_detect_change() delay support for wbsd driver

Convert wbsd to use the new delay functionality in mmc_detect_change()
rather than implementing its own timer.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 5 insertions, 22 deletions

diff --git a/drivers/mmc/wbsd.c b/drivers/mmc/wbsd.c
index a62c86fef5cc..e11e55dc8924 100644
--- a/drivers/mmc/wbsd.c
+++ b/drivers/mmc/wbsd.c
@@ -1112,20 +1112,6 @@ static void wbsd_reset_ignore(unsigned long data)
 }
 
 /*
- * 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, 0);        
-}
-
-/*
  * Tasklets
  */
 
@@ -1169,14 +1155,16 @@ static void wbsd_tasklet_card(unsigned long param)
                         DBG("Card inserted\n");
                         host->flags |= WBSD_FCARD_PRESENT;
                         
+                        spin_unlock(&host->lock);
+
                         /*
                          * Delay card detection to allow electrical connections
                          * to stabilise.
                          */
-                        mod_timer(&host->detect_timer, jiffies + HZ/2);
+                        mmc_detect_change(host->mmc, msecs_to_jiffies(500));
                 }
-                
-                spin_unlock(&host->lock);
+                else
+                        spin_unlock(&host->lock);
         }
         else if (host->flags & WBSD_FCARD_PRESENT)
         {
@@ -1409,10 +1397,6 @@ static int __devinit wbsd_alloc_mmc(struct device* dev)
         /*
          * Set up timers
          */
-        init_timer(&host->detect_timer);
-        host->detect_timer.data = (unsigned long)host;
-        host->detect_timer.function = wbsd_detect_card;
-
         init_timer(&host->ignore_timer);
         host->ignore_timer.data = (unsigned long)host;
         host->ignore_timer.function = wbsd_reset_ignore;
@@ -1454,7 +1438,6 @@ static void __devexit wbsd_free_mmc(struct device* dev)
         BUG_ON(host == NULL);
         
         del_timer_sync(&host->ignore_timer);
-        del_timer_sync(&host->detect_timer);
         
         mmc_free_host(mmc);