acpi/nfit: Block function zero DSMs

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commit 5e9e38d0db upstream.

In preparation for using function number 0 as an error value, prevent it
from being considered a valid function value by acpi_nfit_ctl().

Cc: <stable@vger.kernel.org>
Cc: stuart hayes <stuart.w.hayes@gmail.com>
Fixes: e02fb7264d ("nfit: add Microsoft NVDIMM DSM command set...")
Reported-by: Jeff Moyer <jmoyer@redhat.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
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 2019-01-14 14:07:19 -08:00 • committed by Greg Kroah-Hartman

parent 50b4046732

commit 101485f038

1 changed files with 7 additions and 0 deletions

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drivers/acpi/nfit/core.c

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