| Message ID | 20150225133612.GV19745@mwanda |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
Wed, Feb 25, 2015 at 02:36:12PM CET, 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 It's a QEMU hardware, you can have it easily. >31 ports. Still we may as well silence the warning even if it's not a >real bug. It can have up to 62 ports. > >Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Jiri Pirko <jiri@resnulli.us> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
From: Dan Carpenter <dan.carpenter@oracle.com> Date: Wed, 25 Feb 2015 16:36:12 +0300 > "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> Applied. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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); }
"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> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html