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    Subject[PATCH 4.9 103/145] scsi: advansys: fix build warning for PCI=n
    Date
    4.9-stable review patch.  If anyone has any objections, please let me know.

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

    From: Arnd Bergmann <arnd@arndb.de>

    commit f46e7cd36b5f2ce2bfb567e278a10ca717f85b84 upstream.

    The advansys probe function tries to handle both ISA and PCI cases, each
    hidden in an #ifdef when unused. This leads to a warning indicating that
    when PCI is disabled we could be using uninitialized data:

    drivers/scsi/advansys.c: In function advansys_board_found :
    drivers/scsi/advansys.c:11036:5: error: ret may be used uninitialized in this function [-Werror=maybe-uninitialized]
    drivers/scsi/advansys.c:10928:28: note: ret was declared here
    drivers/scsi/advansys.c:11309:8: error: share_irq may be used uninitialized in this function [-Werror=maybe-uninitialized]
    drivers/scsi/advansys.c:10928:6: note: share_irq was declared here

    This cannot happen in practice because the hardware in question only
    exists for PCI, but changing the code to just error out here is better
    for consistency and avoids the warning.

    Signed-off-by: Arnd Bergmann <arnd@arndb.de>
    Reviewed-by: Hannes Reinecke <hare@suse.com>
    Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/scsi/advansys.c | 3 +++
    1 file changed, 3 insertions(+)

    --- a/drivers/scsi/advansys.c
    +++ b/drivers/scsi/advansys.c
    @@ -11030,6 +11030,9 @@ static int advansys_board_found(struct S
    ASC_DBG(2, "AdvInitGetConfig()\n");

    ret = AdvInitGetConfig(pdev, shost) ? -ENODEV : 0;
    +#else
    + share_irq = 0;
    + ret = -ENODEV;
    #endif /* CONFIG_PCI */
    }


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