linux-kernel - [PATCH v2 3/4] staging: sm750fb: correctly define SM750LE_REVISION

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Message-Id: <1425886506-8643-3-git-send-email-sudipm.mukherjee@gmail.com>
Date:	Mon,  9 Mar 2015 13:05:05 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Sudip Mukherjee <sudipm.mukherjee@...il.com>,
	linux-fbdev@...r.kernel.org, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/4] staging: sm750fb: correctly define SM750LE_REVISION_ID

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@...torindia.org>
---

v2: removed the redundant cast in sm750_hw.c

 drivers/staging/sm750fb/ddk750_chip.h | 4 +++-
 drivers/staging/sm750fb/sm750_hw.c    | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/sm750fb/ddk750_chip.h b/drivers/staging/sm750fb/ddk750_chip.h
index 1c78875..d761b72 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)
+#endif
 
 /* This is all the chips recognized by this library */
 typedef enum _logical_chip_type_t
diff --git a/drivers/staging/sm750fb/sm750_hw.c b/drivers/staging/sm750fb/sm750_hw.c
index ec2d499..a2b7fe2 100644
--- a/drivers/staging/sm750fb/sm750_hw.c
+++ b/drivers/staging/sm750fb/sm750_hw.c
@@ -277,7 +277,7 @@ int hw_sm750_crtc_checkMode(struct lynxfb_crtc* crtc,struct fb_var_screeninfo* v
 		case 16:
 			break;
 		case 32:
-			if(share->revid == (unsigned char)SM750LE_REVISION_ID){
+			if (share->revid == SM750LE_REVISION_ID) {
 				pr_debug("750le do not support 32bpp\n");
 				return -EINVAL;
 			}
-- 
1.8.1.2

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