target/linux/ar71xx/patches-4.9/403-mtd_fix_cfi_cmdset_0002_status_check.patch

   1 --- a/drivers/mtd/chips/cfi_cmdset_0002.c
   2 +++ b/drivers/mtd/chips/cfi_cmdset_0002.c
   3 @@ -1631,8 +1631,8 @@ static int __xipram do_write_oneword(str
   4                         break;
   5                 }
   6
   7 -               if (chip_ready(map, adr))
   8 -                       break;
   9 +               if (chip_good(map, adr, datum))
  10 +                       goto enable_xip;
  11
  12                 /* Latency issues. Drop the lock, wait a while and retry */
  13                 UDELAY(map, chip, adr, 1);
  14 @@ -1648,6 +1648,8 @@ static int __xipram do_write_oneword(str
  15
  16                 ret = -EIO;
  17         }
  18 +
  19 + enable_xip:
  20         xip_enable(map, chip, adr);
  21   op_done:
  22         if (mode == FL_OTP_WRITE)
  23 @@ -2226,7 +2228,6 @@ static int cfi_amdstd_panic_write(struct
  24         return 0;
  25  }
  26
  27 -
  28  /*
  29   * Handle devices with one erase region, that only implement
  30   * the chip erase command.
  31 @@ -2291,8 +2292,8 @@ static int __xipram do_erase_chip(struct
  32                         chip->erase_suspended = 0;
  33                 }
  34
  35 -               if (chip_ready(map, adr))
  36 -                       break;
  37 +               if (chip_good(map, adr, map_word_ff(map)))
  38 +                       goto op_done;
  39
  40                 if (time_after(jiffies, timeo)) {
  41                         printk(KERN_WARNING "MTD %s(): software timeout\n",
  42 @@ -2312,6 +2313,7 @@ static int __xipram do_erase_chip(struct
  43                 ret = -EIO;
  44         }
  45
  46 + op_done:
  47         chip->state = FL_READY;
  48         xip_enable(map, chip, adr);
  49         DISABLE_VPP(map);
  50 @@ -2381,9 +2383,9 @@ static int __xipram do_erase_oneblock(st
  51                         chip->erase_suspended = 0;
  52                 }
  53
  54 -               if (chip_ready(map, adr)) {
  55 +               if (chip_good(map, adr, map_word_ff(map))) {
  56                         xip_enable(map, chip, adr);
  57 -                       break;
  58 +                       goto op_done;
  59                 }
  60
  61                 if (time_after(jiffies, timeo)) {
  62 @@ -2405,6 +2407,7 @@ static int __xipram do_erase_oneblock(st
  63                 ret = -EIO;
  64         }
  65
  66 + op_done:
  67         chip->state = FL_READY;
  68         DISABLE_VPP(map);
  69         put_chip(map, chip, adr);