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    Subject[PATCH 4.14 145/178] dev/dax: fix uninitialized variable build warning
    Date
    4.14-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Ross Zwisler <ross.zwisler@linux.intel.com>


    [ Upstream commit 0a3ff78699d1817e711441715d22665475466036 ]

    Fix this build warning:

    warning: 'phys' may be used uninitialized in this function
    [-Wuninitialized]

    As reported here:

    https://lkml.org/lkml/2017/10/16/152
    http://kisskb.ellerman.id.au/kisskb/buildresult/13181373/log/

    Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
    Signed-off-by: Dan Williams <dan.j.williams@intel.com>
    Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/dax/device.c | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    --- a/drivers/dax/device.c
    +++ b/drivers/dax/device.c
    @@ -222,7 +222,8 @@ __weak phys_addr_t dax_pgoff_to_phys(str
    unsigned long size)
    {
    struct resource *res;
    - phys_addr_t phys;
    + /* gcc-4.6.3-nolibc for i386 complains that this is uninitialized */
    + phys_addr_t uninitialized_var(phys);
    int i;

    for (i = 0; i < dev_dax->num_resources; i++) {

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