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path: root/target/linux/ar71xx/patches-3.3/403-mtd_fix_cfi_cmdset_0002_status_check.patch
blob: 9ed059822be5b99ab0c3d8694adc763d77fc98cd (plain)
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--- 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);