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[1/2] mtd/m25p80: retlen is never NULL

Message ID 20100812075352.GN645@bicker
State Accepted
Commit b06cd21e2f0f75686f95afa5b71219b1408f5458
Headers show

Commit Message

Dan Carpenter Aug. 12, 2010, 7:53 a.m. UTC 
This is just a cleanup, it doesn't fix any bugs.

These functions all check retlen inconsistently and it generates a
warning in Smatch (http://smatch.sf.net).  If retlen were ever NULL it
would cause an oops and the code has been this way since 2006 so someone
would have complained.  Also I looked at other places that implemented
the mtd read and write functions and they dereference retlen without
checking.

I removed the checks.

Signed-off-by: Dan Carpenter <error27@gmail.com>
diff mbox

Patch

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index f90941a..83c9086 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -347,8 +347,7 @@  static int m25p80_read(struct mtd_info *mtd, loff_t from, size_t len,
 	spi_message_add_tail(&t[1], &m);
 
 	/* Byte count starts at zero. */
-	if (retlen)
-		*retlen = 0;
+	*retlen = 0;
 
 	mutex_lock(&flash->lock);
 
@@ -394,8 +393,7 @@  static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len,
 			dev_name(&flash->spi->dev), __func__, "to",
 			(u32)to, len);
 
-	if (retlen)
-		*retlen = 0;
+	*retlen = 0;
 
 	/* sanity checks */
 	if (!len)
@@ -466,8 +464,7 @@  static int m25p80_write(struct mtd_info *mtd, loff_t to, size_t len,
 
 			spi_sync(flash->spi, &m);
 
-			if (retlen)
-				*retlen += m.actual_length - m25p_cmdsz(flash);
+			*retlen += m.actual_length - m25p_cmdsz(flash);
 		}
 	}
 
@@ -485,8 +482,7 @@  static int sst_write(struct mtd_info *mtd, loff_t to, size_t len,
 	size_t actual;
 	int cmd_sz, ret;
 
-	if (retlen)
-		*retlen = 0;
+	*retlen = 0;
 
 	/* sanity checks */
 	if (!len)