mtd/drivers/mtd/chips cfi_cmdset_0001.c,1.188,1.189

[Nicolas Pitre]

Update of /home/cvs/mtd/drivers/mtd/chips
In directory phoenix.infradead.org:/tmp/cvs-serv25369/drivers/mtd/chips

Modified Files:
	cfi_cmdset_0001.c 
Log Message:
[MTD] cfi_cmdset_0001: fix range for cache invalidation

From: Alexey Korolev <alexey.korolev at intel.com>

I found issue in cfi_cmdset0001.c. It related to setting up of cache
regions for invalidating in buffered write procedure.
Code performs cache invalidation from "cmd_addr" to "cmd_adr + len" in
do_write_buffer function. In fact we modify region from "adr" to
"adr+len".
The issue affects when you try to write and read data by small chunks.

Signed-off-by: Nicolas Pitre <nico at cam.org>


Index: cfi_cmdset_0001.c
===================================================================
RCS file: /home/cvs/mtd/drivers/mtd/chips/cfi_cmdset_0001.c,v
retrieving revision 1.188
retrieving revision 1.189
diff -u -r1.188 -r1.189
--- cfi_cmdset_0001.c	6 Dec 2005 17:28:16 -0000	1.188
+++ cfi_cmdset_0001.c	8 Feb 2006 16:46:35 -0000	1.189
@@ -1019,8 +1019,8 @@
 #define XIP_INVAL_CACHED_RANGE(map, from, size)  \
 	INVALIDATE_CACHED_RANGE(map, from, size)
 
-#define INVALIDATE_CACHE_UDELAY(map, chip, adr, len, usec)  \
-	UDELAY(map, chip, adr, usec)
+#define INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr, adr, len, usec)  \
+	UDELAY(map, chip, cmd_adr, usec)
 
 /*
  * Extra notes:
@@ -1052,7 +1052,7 @@
 	spin_lock(chip->mutex);  \
 } while (0)
 
-#define INVALIDATE_CACHE_UDELAY(map, chip, adr, len, usec)  \
+#define INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr, adr, len, usec)  \
 do {  \
 	spin_unlock(chip->mutex);  \
 	INVALIDATE_CACHED_RANGE(map, adr, len);  \
@@ -1284,7 +1284,7 @@
 	map_write(map, datum, adr);
 	chip->state = mode;
 
-	INVALIDATE_CACHE_UDELAY(map, chip,
+	INVALIDATE_CACHE_UDELAY(map, chip, adr,
 				adr, map_bankwidth(map),
 				chip->word_write_time);
 
@@ -1572,8 +1572,8 @@
 	map_write(map, CMD(0xd0), cmd_adr);
 	chip->state = FL_WRITING;
 
-	INVALIDATE_CACHE_UDELAY(map, chip,
-				cmd_adr, len,
+	INVALIDATE_CACHE_UDELAY(map, chip, cmd_adr,
+				adr, len,
 				chip->buffer_write_time);
 
 	timeo = jiffies + (HZ/2);
@@ -1749,7 +1749,7 @@
 	chip->state = FL_ERASING;
 	chip->erase_suspended = 0;
 
-	INVALIDATE_CACHE_UDELAY(map, chip,
+	INVALIDATE_CACHE_UDELAY(map, chip, adr,
 				adr, len,
 				chip->erase_time*1000/2);