tmio_mmc: Use 100ms mmc_detect_change() delay

This patch changes the tmio_mmc driver to wait 100ms
before checking the card detect status. This type of
delay is quite common among mmc drivers, it seems that
most hardware platforms need to give the hardware some
time to settle before checking card availabilty.

Hotplug is half-broken without this patch on the sh7724
Ecovec board. Hot insertion seems ok but eject is never
detected without this patch.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index e2c0cc9a0ca6d83ef1343f78ec9d206cb67fb3b4..7b2376d4050a4b627797439d0c6b1ea8551f0bba 100644 (file)
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -323,7 +323,7 @@ static irqreturn_t tmio_mmc_irq(int irq, void *devid)
                if (ireg & (TMIO_STAT_CARD_INSERT | TMIO_STAT_CARD_REMOVE)) {
                        ack_mmc_irqs(host, TMIO_STAT_CARD_INSERT |
                                TMIO_STAT_CARD_REMOVE);
-                       mmc_detect_change(host->mmc, 0);
+                       mmc_detect_change(host->mmc, msecs_to_jiffies(100));
                }
 
                /* CRC and other errors */