Messages in this thread | | | Date | Wed, 25 Feb 2015 05:50:15 -0800 | Subject | Re: [patch 2/2] rocker: silence shift wrapping warning | From | Scott Feldman <> |
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On Wed, Feb 25, 2015 at 5:36 AM, Dan Carpenter <dan.carpenter@oracle.com> wrote: > "val" is declared as a u64 so static checkers complain that this shift > can wrap. I don't have the hardware but probably it's doesn't have over > 31 ports. Still we may as well silence the warning even if it's not a > real bug. > > Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> > > diff --git a/drivers/net/ethernet/rocker/rocker.c b/drivers/net/ethernet/rocker/rocker.c > index 713a13c..9fb6948 100644 > --- a/drivers/net/ethernet/rocker/rocker.c > +++ b/drivers/net/ethernet/rocker/rocker.c > @@ -1257,9 +1257,9 @@ static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable) > u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE); > > if (enable) > - val |= 1 << rocker_port->lport; > + val |= 1ULL << rocker_port->lport; > else > - val &= ~(1 << rocker_port->lport); > + val &= ~(1ULL << rocker_port->lport); > rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val); > } >
Acked-by: Scott Feldman <sfeldma@gmail.com>
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