From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Date: Tue, 4 Dec 2012 15:51:36 +0000 (+0100)
Subject: mmc: extend the slot-gpio card-detection to use host's .card_event() method
X-Git-Tag: v3.8-rc1~190^2~1
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=451c89578eb4791b9d329eb71a79e6715e60f89e;p=~emulex%2Finfiniband.git

mmc: extend the slot-gpio card-detection to use host's .card_event() method

The slot-gpio API provides a generic card-detection handler. To support a
wider range of hosts it has to call the host's card-event callback, if
implemented. Also increase the debounce interval to 200ms to match the
SDHCI driver.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c
index 08c6b3dfe08..16a1c0b6f26 100644
--- a/drivers/mmc/core/slot-gpio.c
+++ b/drivers/mmc/core/slot-gpio.c
@@ -27,7 +27,13 @@ struct mmc_gpio {
 static irqreturn_t mmc_gpio_cd_irqt(int irq, void *dev_id)
 {
 	/* Schedule a card detection after a debounce timeout */
-	mmc_detect_change(dev_id, msecs_to_jiffies(100));
+	struct mmc_host *host = dev_id;
+
+	if (host->ops->card_event)
+		host->ops->card_event(host);
+
+	mmc_detect_change(host, msecs_to_jiffies(200));
+
 	return IRQ_HANDLED;
 }