acpi, nfit, libnvdimm: fix interleave set cookie calculation (64-bit comparison)

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commit b03b99a329 upstream.

While reviewing the -stable patch for commit 86ef58a4e3 "nfit,
libnvdimm: fix interleave set cookie calculation" Ben noted:

    "This is returning an int, thus it's effectively doing a 32-bit
     comparison and not the 64-bit comparison you say is needed."

Update the compare operation to be immune to this integer demotion problem.

Cc: Nicholas Moulin <nicholas.w.moulin@linux.intel.com>
Fixes: 86ef58a4e3 ("nfit, libnvdimm: fix interleave set cookie calculation")
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Dan Williams 2017-03-27 21:53:38 -07:00 • committed by Greg Kroah-Hartman

parent 5e29a45f1e

commit 0b914aa8cd

1 changed files with 5 additions and 1 deletions

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drivers/acpi/nfit/core.c

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