sdhci: make sure to clear the error interrupt

The controller has a bit indicating that one of the higher bits (the
error bits) are set. A previous bug caused this bit to be masked, but
since that bug has been fixed we have to clear it explicictly.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

drivers/mmc/host/sdhci.c

@@ -1024,6 +1024,8 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
 
 	intmask &= ~(SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK);
 
+	intmask &= ~SDHCI_INT_ERROR;
+
 	if (intmask & SDHCI_INT_BUS_POWER) {
 		printk(KERN_ERR "%s: Card is consuming too much power!\n",
 			mmc_hostname(host->mmc));

drivers/mmc/host/sdhci.h

@@ -107,6 +107,7 @@
 #define  SDHCI_INT_CARD_INSERT	0x00000040
 #define  SDHCI_INT_CARD_REMOVE	0x00000080
 #define  SDHCI_INT_CARD_INT	0x00000100
+#define  SDHCI_INT_ERROR	0x00008000
 #define  SDHCI_INT_TIMEOUT	0x00010000
 #define  SDHCI_INT_CRC		0x00020000
 #define  SDHCI_INT_END_BIT	0x00040000