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Fix corner case in bad block table handling.

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In the unlikely event that both blocks 10 and 11 are marked as bad (on a
32 bit machine), then the process of marking block 10 as bad stomps on
cached entry for block 11.  There are (of course) other examples.

Signed-off-by: Patrick Doyle <pdoyle@irobot.com>
Reviewed-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Doyle, Patrick 2020-07-15 14:46:34 +00:00 committed by Tom Rini
parent 4a4830cf91
commit 06fc4573b9
1 changed files with 1 additions and 1 deletions
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2
drivers/mtd/nand/bbt.c
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@ -127,7 +127,7 @@ int nanddev_bbt_set_block_status(struct nand_device *nand, unsigned int entry,
unsigned int rbits = bits_per_block + offs - BITS_PER_LONG;
pos[1] &= ~GENMASK(rbits - 1, 0);
pos[1] |= val >> rbits;
pos[1] |= val >> (bits_per_block - rbits);
}
return 0;