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authorGabor Juhos <juhosg@openwrt.org>2010-01-17 14:33:29 +0000
committerGabor Juhos <juhosg@openwrt.org>2010-01-17 14:33:29 +0000
commitf9f827eac2dcd3506d46d6c752df38e5137256a2 (patch)
treeb381314af8e9e4ba610d340cb4e88473628c3a65
parent3789aa82ac3294c3d00fae53d1bcee05a5e8d9e2 (diff)
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ar71xx: add optimizations to the cfi cmdset 002 status checking
SVN-Revision: 19186
-rw-r--r--target/linux/ar71xx/patches-2.6.30/108-mtd_fix_cfi_cmdset_0002_status_check.patch48
1 files changed, 40 insertions, 8 deletions
diff --git a/target/linux/ar71xx/patches-2.6.30/108-mtd_fix_cfi_cmdset_0002_status_check.patch b/target/linux/ar71xx/patches-2.6.30/108-mtd_fix_cfi_cmdset_0002_status_check.patch
index 6c49fd4..d3e8b79 100644
--- a/target/linux/ar71xx/patches-2.6.30/108-mtd_fix_cfi_cmdset_0002_status_check.patch
+++ b/target/linux/ar71xx/patches-2.6.30/108-mtd_fix_cfi_cmdset_0002_status_check.patch
@@ -25,16 +25,27 @@
/* 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
+@@ -1152,8 +1154,8 @@ static int __xipram do_write_oneword(str
break;
}
- if (chip_ready(map, adr))
+- break;
+ if (chip_good(map, adr, datum))
- break;
++ goto enable_xip;
/* Latency issues. Drop the lock, wait a while and retry */
-@@ -1436,6 +1438,7 @@ static int __xipram do_write_buffer(stru
+ UDELAY(map, chip, adr, 1);
+@@ -1169,6 +1171,8 @@ static int __xipram do_write_oneword(str
+
+ ret = -EIO;
+ }
++
++ enable_xip:
+ xip_enable(map, chip, adr);
+ op_done:
+ chip->state = FL_READY;
+@@ -1436,6 +1440,7 @@ static int __xipram do_write_buffer(stru
}
@@ -42,7 +53,7 @@
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
+@@ -1514,7 +1519,7 @@ static int cfi_amdstd_write_buffers(stru
return 0;
}
@@ -51,21 +62,42 @@
/*
* Handle devices with one erase region, that only implement
-@@ -1579,7 +1582,7 @@ static int __xipram do_erase_chip(struct
+@@ -1579,8 +1584,8 @@ static int __xipram do_erase_chip(struct
chip->erase_suspended = 0;
}
- if (chip_ready(map, adr))
+- break;
+ if (chip_good(map, adr, map_word_ff(map)))
- break;
++ goto op_done;
if (time_after(jiffies, timeo)) {
-@@ -1667,7 +1670,7 @@ static int __xipram do_erase_oneblock(st
+ printk(KERN_WARNING "MTD %s(): software timeout\n",
+@@ -1600,6 +1605,7 @@ static int __xipram do_erase_chip(struct
+ ret = -EIO;
+ }
+
++ op_done:
+ chip->state = FL_READY;
+ xip_enable(map, chip, adr);
+ put_chip(map, chip, adr);
+@@ -1667,9 +1673,9 @@ 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;
+- break;
++ goto op_done;
}
+
+ if (time_after(jiffies, timeo)) {
+@@ -1691,6 +1697,7 @@ static int __xipram do_erase_oneblock(st
+ ret = -EIO;
+ }
+
++ op_done:
+ chip->state = FL_READY;
+ put_chip(map, chip, adr);
+ spin_unlock(chip->mutex);