[PATCH 1/3] mmc: omap_hsmmc: Errata i705: SD hot unplug

[Viswanath Puttagunta <vishp@ti.com>]

Turn off IO & PBIAS cells and then SD card VMMC as soon
as we get disconnect interrupt. Failure to do so might
cause current spikes (latch-up issue) which can potentially
burn the IO cells.

Signed-off-by: Viswanath Puttagunta <vishp@ti.com>
---
 drivers/mmc/host/omap_hsmmc.c |   13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 56d4499..61d830f 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1177,10 +1177,17 @@ static irqreturn_t omap_hsmmc_detect(int irq, void *dev_id)
 		carddetect = -ENOSYS;
 	}
 
-	if (carddetect)
+	if (carddetect) {
 		mmc_detect_change(host->mmc, (HZ * 200) / 1000);
-	else
-		mmc_detect_change(host->mmc, (HZ * 50) / 1000);
+	} else {
+		if ((MMC_POWER_OFF != host->power_mode) &&
+				(mmc_slot(host).set_power != NULL)) {
+			mmc_slot(host).set_power(host->dev, host->slot_id,
+						0, 0);
+			host->power_mode = MMC_POWER_OFF;
+		}
+		mmc_detect_change(host->mmc, 0);
+	}
 	return IRQ_HANDLED;
 }
 
-- 
1.7.4.1