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ar71xx: fix mtd corruption

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coolsnowwolf 2018-10-19 14:01:51 +08:00
parent 29c8928eea
commit 71eba08dc9
1 changed files with 64 additions and 0 deletions
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64
target/linux/ar71xx/patches-4.9/403-mtd_fix_cfi_cmdset_0002_status_check.patch Normal file
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@ -0,0 +1,64 @@
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -1631,8 +1631,8 @@ 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);
@@ -1648,6 +1648,8 @@ static int __xipram do_write_oneword(str
ret = -EIO;
}
+
+ enable_xip:
xip_enable(map, chip, adr);
op_done:
if (mode == FL_OTP_WRITE)
@@ -2226,7 +2228,6 @@ static int cfi_amdstd_panic_write(struct
return 0;
}
-
/*
* Handle devices with one erase region, that only implement
* the chip erase command.
@@ -2294,7 +2295,7 @@ static int __xipram do_erase_chip(struct
}
if (chip_good(map, adr, map_word_ff(map)))
- break;
+ goto op_done;
if (time_after(jiffies, timeo)) {
printk(KERN_WARNING "MTD %s(): software timeout\n",
@@ -2318,6 +2319,7 @@ static int __xipram do_erase_chip(struct
}
}
+ op_done:
chip->state = FL_READY;
xip_enable(map, chip, adr);
DISABLE_VPP(map);
@@ -2391,7 +2393,7 @@ static int __xipram do_erase_oneblock(st
if (chip_good(map, adr, map_word_ff(map))) {
xip_enable(map, chip, adr);
- break;
+ goto op_done;
}
if (time_after(jiffies, timeo)) {
@@ -2417,6 +2419,7 @@ static int __xipram do_erase_oneblock(st
}
}
+ op_done:
chip->state = FL_READY;
DISABLE_VPP(map);
put_chip(map, chip, adr);