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libnvdimm: fix clear length of nvdimm_forget_poison()

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ND_CMD_CLEAR_ERROR command returns 'clear_err.cleared', the length
of error actually cleared, which may be smaller than its requested
'len'.

Change nvdimm_clear_poison() to call nvdimm_forget_poison() with
'clear_err.cleared' when this value is valid.

Cc: <[email protected]>
Fixes: e046114af5 ("libnvdimm: clear the internal poison_list when clearing badblocks")
Cc: Dave Jiang <[email protected]>
Cc: Vishal Verma <[email protected]>
Signed-off-by: Toshi Kani <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
This commit is contained in:
Toshi Kani 2017-04-27 16:57:05 -06:00 • committed by Dan Williams
commit 8d13c02906
1 changed files with 3 additions and 1 deletions
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4
drivers/nvdimm/bus.c
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@ -219,7 +219,9 @@ long nvdimm_clear_poison(struct device *dev, phys_addr_t phys,
if (cmd_rc < 0)
return cmd_rc;
nvdimm_forget_poison(nvdimm_bus, phys, len);
if (clear_err.cleared > 0)
nvdimm_forget_poison(nvdimm_bus, phys, clear_err.cleared);
return clear_err.cleared;
}
EXPORT_SYMBOL_GPL(nvdimm_clear_poison);