[PATCH 3/4] staging: sm750fb: correctly define SM750LE_REVISION_ID

From: Sudip Mukherjee
Date: Sun Mar 08 2015 - 08:32:00 EST

check if it is already defined before defining SM750LE_REVISION_ID
again and at the same time mention correct data type.

Signed-off-by: Sudip Mukherjee <sudip@xxxxxxxxxxxxxxx>
drivers/staging/sm750fb/ddk750_chip.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/sm750fb/ddk750_chip.h b/drivers/staging/sm750fb/ddk750_chip.h
index 1c78875..e7d27e8 100644
--- a/drivers/staging/sm750fb/ddk750_chip.h
+++ b/drivers/staging/sm750fb/ddk750_chip.h
@@ -1,7 +1,9 @@
#ifndef DDK750_CHIP_H__
#define DDK750_CHIP_H__
#define DEFAULT_INPUT_CLOCK 14318181 /* Default reference clock */
-#define SM750LE_REVISION_ID (char)0xfe
+#ifndef SM750LE_REVISION_ID
+#define SM750LE_REVISION_ID ((unsigned char)0xfe)

/* This is all the chips recognized by this library */
typedef enum _logical_chip_type_t

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