| Message ID | 20201121161457.957-3-nuno.sa@analog.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Make cb a required parameter of buffer-cb | expand |
On 11/21/20 5:14 PM, Nuno Sá wrote: > Return error in case no callback is provided to > `iio_channel_get_all_cb()`. There's no point in setting up a buffer-cb > if no callback is provided. > > Signed-off-by: Nuno Sá <nuno.sa@analog.com> > --- > drivers/iio/buffer/industrialio-buffer-cb.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/iio/buffer/industrialio-buffer-cb.c b/drivers/iio/buffer/industrialio-buffer-cb.c > index 47c96f7f4976..4c12b7a94af5 100644 > --- a/drivers/iio/buffer/industrialio-buffer-cb.c > +++ b/drivers/iio/buffer/industrialio-buffer-cb.c > @@ -54,6 +54,11 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev, > struct iio_cb_buffer *cb_buff; > struct iio_channel *chan; > > + if (!cb) { > + dev_err(dev, "Invalid arguments: A callback must be provided!\n"); > + return ERR_PTR(-EINVAL); > + } > + > cb_buff = kzalloc(sizeof(*cb_buff), GFP_KERNEL); > if (cb_buff == NULL) > return ERR_PTR(-ENOMEM); > Reviewed-by: Olivier Moysan <olivier.moysan@st.com> Best regards, Olivier
diff --git a/drivers/iio/buffer/industrialio-buffer-cb.c b/drivers/iio/buffer/industrialio-buffer-cb.c index 47c96f7f4976..4c12b7a94af5 100644 --- a/drivers/iio/buffer/industrialio-buffer-cb.c +++ b/drivers/iio/buffer/industrialio-buffer-cb.c @@ -54,6 +54,11 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev, struct iio_cb_buffer *cb_buff; struct iio_channel *chan; + if (!cb) { + dev_err(dev, "Invalid arguments: A callback must be provided!\n"); + return ERR_PTR(-EINVAL); + } + cb_buff = kzalloc(sizeof(*cb_buff), GFP_KERNEL); if (cb_buff == NULL) return ERR_PTR(-ENOMEM);
Return error in case no callback is provided to `iio_channel_get_all_cb()`. There's no point in setting up a buffer-cb if no callback is provided. Signed-off-by: Nuno Sá <nuno.sa@analog.com> --- drivers/iio/buffer/industrialio-buffer-cb.c | 5 +++++ 1 file changed, 5 insertions(+)