linux-kernel - [PATCH] cfi.h: quiet sparse noise

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Message-Id: <201001151109.32890.hartleys@visionengravers.com>
Date:	Fri, 15 Jan 2010 11:09:32 -0700
From:	H Hartley Sweeten <hartleys@...ionengravers.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-mtd@...ts.infradead.org
Cc:	dwmw2@...radead.org
Subject: [PATCH] cfi.h: quiet sparse noise

cfi.h: quiet sparse noise

In the inline function cfi_build_cmd_addr, the cast of cmd_ofs to an
uint8_t produces a sparse warning of the type:

warning: cast truncates bits from constant value (2aa becomes aa)

Quiet the warning by masking cmd_ofs with 0xff and remove the cast.

Signed-off-by: H Hartley Sweeten <hsweeten@...ionengravers.com>
Cc: David Woodhouse <dwmw2@...radead.org>

---

diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h
index df89f42..a4eefc5 100644
--- a/include/linux/mtd/cfi.h
+++ b/include/linux/mtd/cfi.h
@@ -297,7 +297,7 @@ static inline uint32_t cfi_build_cmd_addr(uint32_t cmd_ofs,
 	 * and 32bit devices on 16 bit busses
 	 * set the low bit of the alternating bit sequence of the address.
 	 */
-	if (((type * interleave) > bankwidth) && ((uint8_t)cmd_ofs == 0xaa))
+	if (((type * interleave) > bankwidth) && ((cmd_ofs & 0xff) == 0xaa))
 		addr |= (type >> 1)*interleave;
 
 	return  addr;
--
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