• Arnd Bergmann's avatar
    qed: Fix -Wmaybe-uninitialized false positive · 815deee0
    Arnd Bergmann authored
    A previous attempt to shut up the uninitialized variable use
    warning was apparently insufficient. When CONFIG_PROFILE_ANNOTATED_BRANCHES
    is set, gcc-8 still warns, because the unlikely() check in DP_NOTICE()
    causes it to no longer track the state of all variables correctly:
    
    drivers/net/ethernet/qlogic/qed/qed_dev.c: In function 'qed_llh_set_ppfid_affinity':
    drivers/net/ethernet/qlogic/qed/qed_dev.c:798:47: error: 'abs_ppfid' may be used uninitialized in this function [-Werror=maybe-uninitialized]
      addr = NIG_REG_PPF_TO_ENGINE_SEL + abs_ppfid * 0x4;
                                         ~~~~~~~~~~^~~~~
    
    This is not a nice workaround, but always initializing the output from
    qed_llh_abs_ppfid() at least shuts up the false positive reliably.
    
    Fixes: 79284ade ("qed: Add llh ppfid interface and 100g support for offload protocols")
    Fixes: 8e2ea3ea ("qed: Fix static checker warning")
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    Acked-by: Michal Kalderon <michal.kalderon@marvell.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    815deee0
qed_dev.c 142 KB