1 files changed, 19 insertions, 46 deletions

diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index b4180c7bffc..0189efcb9e1 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -129,6 +129,10 @@
 				 INT_CCSTO | INT_CRCSTO | INT_WDATTO |	  \
 				 INT_RDATTO | INT_RBSYTO | INT_RSPTO)
 
+#define INT_ALL			(INT_RBSYE | INT_CRSPE | INT_BUFREN |	 \
+				 INT_BUFWEN | INT_CMD12DRE | INT_BUFRE | \
+				 INT_DTRANE | INT_CMD12RBE | INT_CMD12CRE)
+
 /* CE_INT_MASK */
 #define MASK_ALL		0x00000000
 #define MASK_MCCSDE		(1 << 29)
@@ -160,6 +164,11 @@
 				 MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO | \
 				 MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO)
 
+#define MASK_CLEAN		(INT_ERR_STS | MASK_MRBSYE | MASK_MCRSPE |	\
+				 MASK_MBUFREN | MASK_MBUFWEN |			\
+				 MASK_MCMD12DRE | MASK_MBUFRE | MASK_MDTRANE |	\
+				 MASK_MCMD12RBE | MASK_MCMD12CRE)
+
 /* CE_HOST_STS1 */
 #define STS1_CMDSEQ		(1 << 31)
 
@@ -1233,58 +1242,22 @@ static irqreturn_t sh_mmcif_intr(int irq, void *dev_id)
 {
 	struct sh_mmcif_host *host = dev_id;
 	u32 state;
-	int err = 0;
 
 	state = sh_mmcif_readl(host->addr, MMCIF_CE_INT);
+	sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
+	sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state & MASK_CLEAN);
 
-	if (state & INT_ERR_STS) {
-		/* error interrupts - process first */
-		sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
-		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
-		err = 1;
-	} else if (state & INT_RBSYE) {
-		sh_mmcif_writel(host->addr, MMCIF_CE_INT,
-				~(INT_RBSYE | INT_CRSPE));
-		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MRBSYE);
-	} else if (state & INT_CRSPE) {
-		sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_CRSPE);
-		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCRSPE);
-	} else if (state & INT_BUFREN) {
-		sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFREN);
-		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
-	} else if (state & INT_BUFWEN) {
-		sh_mmcif_writel(host->addr, MMCIF_CE_INT,
-				~(INT_BUFWEN | INT_DTRANE | INT_CMD12DRE |
-				  INT_CMD12RBE | INT_CMD12CRE));
-		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
-	} else if (state & INT_CMD12DRE) {
-		sh_mmcif_writel(host->addr, MMCIF_CE_INT,
-			~(INT_CMD12DRE | INT_CMD12RBE |
-			  INT_CMD12CRE | INT_BUFRE));
-		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE);
-	} else if (state & INT_BUFRE) {
-		sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFRE);
-		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFRE);
-	} else if (state & INT_DTRANE) {
-		sh_mmcif_writel(host->addr, MMCIF_CE_INT,
-			~(INT_CMD12DRE | INT_CMD12RBE |
-			  INT_CMD12CRE | INT_DTRANE));
-		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MDTRANE);
-	} else if (state & INT_CMD12RBE) {
-		sh_mmcif_writel(host->addr, MMCIF_CE_INT,
-				~(INT_CMD12RBE | INT_CMD12CRE));
-		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE);
-	} else {
-		dev_dbg(&host->pd->dev, "Unsupported interrupt: 0x%x\n", state);
-		sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
-		sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
-		err = 1;
-	}
-	if (err) {
+	if (state & ~MASK_CLEAN)
+		dev_dbg(&host->pd->dev, "IRQ state = 0x%08x incompletely cleared\n",
+			state);
+
+	if (state & INT_ERR_STS || state & ~INT_ALL) {
 		host->sd_error = true;
-		dev_dbg(&host->pd->dev, "int err state = %08x\n", state);
+		dev_dbg(&host->pd->dev, "int err state = 0x%08x\n", state);
 	}
 	if (state & ~(INT_CMD12RBE | INT_CMD12CRE)) {
+		if (!host->mrq)
+			dev_dbg(&host->pd->dev, "NULL IRQ state = 0x%08x\n", state);
 		if (!host->dma_active)
 			return IRQ_WAKE_THREAD;
 		else if (host->sd_error)