mtd/drivers/mtd/chips cfi_cmdset_0001.c,1.130,1.131

[Thayne Harbaugh]

Update of /home/cvs/mtd/drivers/mtd/chips
In directory phoenix.infradead.org:/tmp/cvs-serv27814/drivers/mtd/chips

Modified Files:
	cfi_cmdset_0001.c 
Log Message:
check for NOP before writing in do_write_oneword()

Index: cfi_cmdset_0001.c
===================================================================
RCS file: /home/cvs/mtd/drivers/mtd/chips/cfi_cmdset_0001.c,v
retrieving revision 1.130
retrieving revision 1.131
diff -u -r1.130 -r1.131
--- cfi_cmdset_0001.c	11 Aug 2003 12:41:05 -0000	1.130
+++ cfi_cmdset_0001.c	22 Oct 2003 18:30:01 -0000	1.131
@@ -756,6 +756,14 @@
 		return ret;
 	}
 
+	/*
+	 * Check for a NOP for the case when the datum to write is
+	 * already present.
+	 */
+	status = cfi_read(map, adr);
+	if (status == datum)
+		goto out;
+
 	ENABLE_VPP(map);
 	cfi_write(map, CMD(0x40), adr);
 	cfi_write(map, datum, adr);