target/linux/generic/pending-4.9/461-mtd-cfi_cmdset_0002-add-buffer-write-cmd-timeout.patch


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

From: George Kashperko <george@znau.edu.ua>
Subject: Issue map read after Write Buffer Load command to ensure chip is ready to receive data.

Signed-off-by: George Kashperko <george@znau.edu.ua>
---
 drivers/mtd/chips/cfi_cmdset_0002.c |    1 +
 1 file changed, 1 insertion(+)
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -1829,6 +1829,7 @@ static int __xipram do_write_buffer(stru
 
 	/* Write Buffer Load */
 	map_write(map, CMD(0x25), cmd_adr);
+	(void) map_read(map, cmd_adr);
 
 	chip->state = FL_WRITING_TO_BUFFER;