target/linux/generic/patches-4.4/143-mtd-bcm47xxpart-fix-parsing-first-block-after-aligne.patch

   1 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   2 Subject: [PATCH] mtd: bcm47xxpart: fix parsing first block after aligned TRX
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   6
   7 After parsing TRX we should skip to the first block placed behind it.
   8 Our code was working only with TRX with length not aligned to the
   9 blocksize. In other cases (length aligned) it was missing the block
  10 places right after TRX.
  11
  12 This fixes calculation and simplifies the comment.
  13
  14 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  15 ---
  16  drivers/mtd/bcm47xxpart.c | 10 ++++------
  17  1 file changed, 4 insertions(+), 6 deletions(-)
  18
  19 --- a/drivers/mtd/bcm47xxpart.c
  20 +++ b/drivers/mtd/bcm47xxpart.c
  21 @@ -229,12 +229,10 @@ static int bcm47xxpart_parse(struct mtd_
  22
  23                         last_trx_part = curr_part - 1;
  24
  25 -                       /*
  26 -                        * We have whole TRX scanned, skip to the next part. Use
  27 -                        * roundown (not roundup), as the loop will increase
  28 -                        * offset in next step.
  29 -                        */
  30 -                       offset = rounddown(offset + trx->length, blocksize);
  31 +                       /* Jump to the end of TRX */
  32 +                       offset = roundup(offset + trx->length, blocksize);
  33 +                       /* Next loop iteration will increase the offset */
  34 +                       offset -= blocksize;
  35                         continue;
  36                 }
  37