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ar71xx: the lack of DQ* flash status checking for cfi cmdset 0002 does not only apply to erase commands, it also affects writes. extend the workaround to cover writes commands as well

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SVN-Revision: 19175
This commit is contained in:
Felix Fietkau 2010-01-17 01:07:18 +00:00
parent 4af8308788
commit ae440b2f00
2 changed files with 71 additions and 20 deletions
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20
target/linux/ar71xx/patches-2.6.30/108-mtd_fix_cfi_cmdset_0002_erase_status_check.patch
View file

@ -1,20 +0,0 @@
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -1579,7 +1579,7 @@ static int __xipram do_erase_chip(struct
chip->erase_suspended = 0;
}
- if (chip_ready(map, adr))
+ if (chip_good(map, adr, map_word_ff(map)))
break;
if (time_after(jiffies, timeo)) {
@@ -1667,7 +1667,7 @@ static int __xipram do_erase_oneblock(st
chip->erase_suspended = 0;
}
- if (chip_ready(map, adr)) {
+ if (chip_good(map, adr, map_word_ff(map))) {
xip_enable(map, chip, adr);
break;
}

71
target/linux/ar71xx/patches-2.6.30/108-mtd_fix_cfi_cmdset_0002_status_check.patch Normal file
View file

@ -0,0 +1,71 @@
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -39,7 +39,7 @@
#include <linux/mtd/xip.h>
#define AMD_BOOTLOC_BUG
-#define FORCE_WORD_WRITE 0
+#define FORCE_WORD_WRITE 1
#define MAX_WORD_RETRIES 3
@@ -190,6 +190,7 @@ static void fixup_amd_bootblock(struct m
}
#endif
+#if !FORCE_WORD_WRITE
static void fixup_use_write_buffers(struct mtd_info *mtd, void *param)
{
struct map_info *map = mtd->priv;
@@ -199,6 +200,7 @@ static void fixup_use_write_buffers(stru
mtd->write = cfi_amdstd_write_buffers;
}
}
+#endif
/* Atmel chips don't use the same PRI format as AMD chips */
static void fixup_convert_atmel_pri(struct mtd_info *mtd, void *param)
@@ -1152,7 +1154,7 @@ static int __xipram do_write_oneword(str
break;
}
- if (chip_ready(map, adr))
+ if (chip_good(map, adr, datum))
break;
/* Latency issues. Drop the lock, wait a while and retry */
@@ -1436,6 +1438,7 @@ static int __xipram do_write_buffer(stru
}
+#if !FORCE_WORD_WRITE
static int cfi_amdstd_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
size_t *retlen, const u_char *buf)
{
@@ -1514,7 +1517,7 @@ static int cfi_amdstd_write_buffers(stru
return 0;
}
-
+#endif
/*
* Handle devices with one erase region, that only implement
@@ -1579,7 +1582,7 @@ static int __xipram do_erase_chip(struct
chip->erase_suspended = 0;
}
- if (chip_ready(map, adr))
+ if (chip_good(map, adr, map_word_ff(map)))
break;
if (time_after(jiffies, timeo)) {
@@ -1667,7 +1670,7 @@ static int __xipram do_erase_oneblock(st
chip->erase_suspended = 0;
}
- if (chip_ready(map, adr)) {
+ if (chip_good(map, adr, map_word_ff(map))) {
xip_enable(map, chip, adr);
break;
}