From ae5d8af579354fb8e984735de9b4b6e9ad6fecb8 Mon Sep 17 00:00:00 2001
From: Stephen Warren <swarren@nvidia.com>
Date: Fri, 6 Apr 2012 15:17:32 -0600
Subject: regmap: mmio: convert some error returns to BUG()

Some of the error conditions detected by regmap_mmio_*() are pure internal
errors, rather than user-/client-triggerable conditions. Convert these to
BUG().

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/base/regmap/regmap-mmio.c b/drivers/base/regmap/regmap-mmio.c
index 1a7b5ee..ffa0e85 100644
--- a/drivers/base/regmap/regmap-mmio.c
+++ b/drivers/base/regmap/regmap-mmio.c
@@ -35,8 +35,8 @@ static int regmap_mmio_gather_write(void *context,
 	struct regmap_mmio_context *ctx = context;
 	u32 offset;
 
-	if (reg_size != 4)
-		return -EIO;
+	BUG_ON(reg_size != 4);
+
 	if (val_size % ctx->val_bytes)
 		return -EIO;
 
@@ -60,7 +60,7 @@ static int regmap_mmio_gather_write(void *context,
 #endif
 		default:
 			/* Should be caught by regmap_mmio_check_config */
-			return -EIO;
+			BUG();
 		}
 		val_size -= ctx->val_bytes;
 		val += ctx->val_bytes;
@@ -72,8 +72,8 @@ static int regmap_mmio_gather_write(void *context,
 
 static int regmap_mmio_write(void *context, const void *data, size_t count)
 {
-	if (count < 4)
-		return -EIO;
+	BUG_ON(count < 4);
+
 	return regmap_mmio_gather_write(context, data, 4, data + 4, count - 4);
 }
 
@@ -84,8 +84,8 @@ static int regmap_mmio_read(void *context,
 	struct regmap_mmio_context *ctx = context;
 	u32 offset;
 
-	if (reg_size != 4)
-		return -EIO;
+	BUG_ON(reg_size != 4);
+
 	if (val_size % ctx->val_bytes)
 		return -EIO;
 
@@ -109,7 +109,7 @@ static int regmap_mmio_read(void *context,
 #endif
 		default:
 			/* Should be caught by regmap_mmio_check_config */
-			return -EIO;
+			BUG();
 		}
 		val_size -= ctx->val_bytes;
 		val += ctx->val_bytes;
-- 
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