[RFC PATCH] mmc: at91_mci: remove the use of irq_to_gpio

[Nicolas Ferre]

Remove the use of irq_to_gpio() in the card detection interrupt
handler. The information is available in the board structure and
we can avoid using a function that has little meaning.

Signed-off-by: Nicolas Ferre <nicolas.ferre at atmel.com>
---
Ben, Arnd,

I have identified this use of irq_to_gpio() which can be remove immediatly.

 drivers/mmc/host/at91_mci.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
index a4aa3af..351951c 100644
--- a/drivers/mmc/host/at91_mci.c
+++ b/drivers/mmc/host/at91_mci.c
@@ -869,7 +869,10 @@ static irqreturn_t at91_mci_irq(int irq, void *devid)
 static irqreturn_t at91_mmc_det_irq(int irq, void *_host)
 {
 	struct at91mci_host *host = _host;
-	int present = !gpio_get_value(irq_to_gpio(irq));
+	int present;
+
+	/* if we are here is that the det_pin exists */
+	present = !gpio_get_value(host->board->det_pin);
 
 	/*
 	 * we expect this irq on both insert and remove,
-- 
1.7.4.1