On Thu, Nov 12, 2015 at 08:46:43AM +0100, Uwe Kleine-König wrote:
> On Thu, Nov 12, 2015 at 08:26:33AM +0100, LABBE Corentin wrote:
> > The simple_strtoul function is marked as obsolete.
> > This patch replace it by kstrtou8.
> >
> > Signed-off-by: LABBE Corentin <clabbe.montjoie@xxxxxxxxx>
> > ---
> > drivers/i2c/busses/i2c-taos-evm.c | 5 ++++-
> > 1 file changed, 4 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/i2c/busses/i2c-taos-evm.c b/drivers/i2c/busses/i2c-taos-evm.c
> > index 4c7fc2d..fe2b705 100644
> > --- a/drivers/i2c/busses/i2c-taos-evm.c
> > +++ b/drivers/i2c/busses/i2c-taos-evm.c
> > @@ -70,6 +70,7 @@ static int taos_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
> > struct serio *serio = adapter->algo_data;
> > struct taos_data *taos = serio_get_drvdata(serio);
> > char *p;
> > + int err;
> >
> > /* Encode our transaction. "@" is for the device address, "$" for the
> > SMBus command and "#" for the data. */
> > @@ -130,7 +131,9 @@ static int taos_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
> > return 0;
> > } else {
> > if (p[0] == 'x') {
> > - data->byte = simple_strtol(p + 1, NULL, 16);
> > + err = kstrtou8(p + 1, 16, &data->byte);
> > + if (err)
> > + return -EPROTO;
> > return 0;
>
> This is nearly equivalent to the probably more correct:
>
> return kstrtou8(p + 1, 16, &data->byte);
>
As reported, by Jean Delvare, kstrtou8 could return -EINVAL.
It is why I "drop" the return code from kstrtou8 and return -EPROTO as suggested by Jean.
I have hesitate to put a comment for this, and it seems finaly necessary.
Regards
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