On 01.03.2021 18:24:31, Dario Binacchi wrote:
> Hi Marc,
>
> > Il 01/03/2021 14:08 Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> ha scritto:
> >
> >
> > On 01.03.2021 12:38:05, Marc Kleine-Budde wrote:
> > > On 28.02.2021 11:38:54, Dario Binacchi wrote:
> > > [...]
> > >
> > > > @@ -730,7 +728,7 @@ static void c_can_do_tx(struct net_device *dev)
> > > > while ((idx = ffs(pend))) {
> > > > idx--;
> > > > pend &= ~(1 << idx);
> > > > - obj = idx + C_CAN_MSG_OBJ_TX_FIRST;
> > > > + obj = idx + priv->msg_obj_tx_first;
> > > > c_can_inval_tx_object(dev, IF_TX, obj);
> > > > can_get_echo_skb(dev, idx, NULL);
> > > > bytes += priv->dlc[idx];
> > > > @@ -740,7 +738,7 @@ static void c_can_do_tx(struct net_device *dev)
> > > > /* Clear the bits in the tx_active mask */
> > > > atomic_sub(clr, &priv->tx_active);
> > > >
> > > > - if (clr & (1 << (C_CAN_MSG_OBJ_TX_NUM - 1)))
> > > > + if (clr & (1 << (priv->msg_obj_tx_num - 1)))
> > >
> > > Do we need 1UL here, too?
> >
> > There are several more "1 <<" in the driver. As the right side of the
> > sift operation can be up to 32, I think you should replace all "1 <<"
> > with "1UL <<".
>
> Do you agree if I use the BIT macro for all these shift operations?
No, only use BIT(), where you want to set a single bit, use GENMASK()
for masks.
regards,
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
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