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Diffstat (limited to 'target/linux/ar71xx/patches-3.3/403-mtd_fix_cfi_cmdset_0002_status_check.patch')
-rw-r--r--target/linux/ar71xx/patches-3.3/403-mtd_fix_cfi_cmdset_0002_status_check.patch69
1 files changed, 69 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.3/403-mtd_fix_cfi_cmdset_0002_status_check.patch b/target/linux/ar71xx/patches-3.3/403-mtd_fix_cfi_cmdset_0002_status_check.patch
new file mode 100644
index 000000000..9ed059822
--- /dev/null
+++ b/target/linux/ar71xx/patches-3.3/403-mtd_fix_cfi_cmdset_0002_status_check.patch
@@ -0,0 +1,69 @@
+--- a/drivers/mtd/chips/cfi_cmdset_0002.c
++++ b/drivers/mtd/chips/cfi_cmdset_0002.c
+@@ -1214,8 +1214,8 @@ static int __xipram do_write_oneword(str
+ break;
+ }
+
+- if (chip_ready(map, adr))
+- break;
++ if (chip_good(map, adr, datum))
++ goto enable_xip;
+
+ /* Latency issues. Drop the lock, wait a while and retry */
+ UDELAY(map, chip, adr, 1);
+@@ -1231,6 +1231,8 @@ static int __xipram do_write_oneword(str
+
+ ret = -EIO;
+ }
++
++ enable_xip:
+ xip_enable(map, chip, adr);
+ op_done:
+ chip->state = FL_READY;
+@@ -1563,7 +1565,6 @@ static int cfi_amdstd_write_buffers(stru
+ return 0;
+ }
+
+-
+ /*
+ * Handle devices with one erase region, that only implement
+ * the chip erase command.
+@@ -1627,8 +1628,8 @@ 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)))
++ goto op_done;
+
+ if (time_after(jiffies, timeo)) {
+ printk(KERN_WARNING "MTD %s(): software timeout\n",
+@@ -1648,6 +1649,7 @@ 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);
+@@ -1715,9 +1717,9 @@ 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;
++ goto op_done;
+ }
+
+ if (time_after(jiffies, timeo)) {
+@@ -1739,6 +1741,7 @@ static int __xipram do_erase_oneblock(st
+ ret = -EIO;
+ }
+
++ op_done:
+ chip->state = FL_READY;
+ put_chip(map, chip, adr);
+ mutex_unlock(&chip->mutex);