mmc: at91_mci: remove the use of irq_to_gpio

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@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
index a4aa3af86fed..a8b4d2aa18e5 100644
--- a/drivers/mmc/host/at91_mci.c
+++ b/drivers/mmc/host/at91_mci.c
@@ -869,7 +869,11 @@ 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;
+
+        /* entering this ISR means that we have configured det_pin:
+         * we can use its value in board structure */
+        present = !gpio_get_value(host->board->det_pin);
 
         /*
          * we expect this irq on both insert and remove,