Messages in this thread | | | Date | Sun, 15 Jun 2014 21:20:17 +0100 | From | Jonathan Cameron <> | Subject | Re: [PATCH 3/8] iio: of_iio_channel_get_by_name() returns non-null pointers for error legs |
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On 11/06/14 12:11, Adam Thomson wrote: > Currently in the inkern.c code for IIO framework, the function > of_iio_channel_get_by_name() will return a non-NULL pointer when > it cannot find a channel using of_iio_channel_get() and when it > tries to search for 'io-channel-ranges' property and fails. This > is incorrect behaviour as the function which calls this expects > a NULL pointer for failure. This patch rectifies the issue. > > Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Hi Adam,
Good find. I've only recently sent a pull request for fixes upstream, so I'll pick this up in a day or so once that has gone.
J > --- > drivers/iio/inkern.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c > index 0cf5f8e..1e8e94d 100644 > --- a/drivers/iio/inkern.c > +++ b/drivers/iio/inkern.c > @@ -183,7 +183,7 @@ static struct iio_channel *of_iio_channel_get_by_name(struct device_node *np, > else if (name && index >= 0) { > pr_err("ERROR: could not get IIO channel %s:%s(%i)\n", > np->full_name, name ? name : "", index); > - return chan; > + return NULL; > } > > /* > @@ -193,8 +193,9 @@ static struct iio_channel *of_iio_channel_get_by_name(struct device_node *np, > */ > np = np->parent; > if (np && !of_get_property(np, "io-channel-ranges", NULL)) > - break; > + return NULL; > } > + > return chan; > } > > @@ -317,6 +318,7 @@ struct iio_channel *iio_channel_get(struct device *dev, > if (channel != NULL) > return channel; > } > + > return iio_channel_get_sys(name, channel_name); > } > EXPORT_SYMBOL_GPL(iio_channel_get); > -- > 1.9.3 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-iio" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
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