The ad4130 driver registers a clock provider, but never removes it. This
leaves a stale clock provider behind that references freed clocks when the
device is unbound.
Register a managed action to remove the clock provider when the device is
removed.
Fixes: 62094060cf3a ("iio: adc: ad4130: add AD4130 driver")
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
---
drivers/iio/adc/ad4130.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/adc/ad4130.c b/drivers/iio/adc/ad4130.c
index 38394341fd6e..5a5dd5e87ffc 100644
--- a/drivers/iio/adc/ad4130.c
+++ b/drivers/iio/adc/ad4130.c
@@ -1817,6 +1817,11 @@ static const struct clk_ops ad4130_int_clk_ops = {
.unprepare = ad4130_int_clk_unprepare,
};
+static void ad4130_clk_del_provider(void *of_node)
+{
+ of_clk_del_provider(of_node);
+}
+
static int ad4130_setup_int_clk(struct ad4130_state *st)
{
struct device *dev = &st->spi->dev;
@@ -1824,6 +1829,7 @@ static int ad4130_setup_int_clk(struct ad4130_state *st)
struct clk_init_data init;
const char *clk_name;
struct clk *clk;
+ int ret;
if (st->int_pin_sel == AD4130_INT_PIN_CLK ||
st->mclk_sel != AD4130_MCLK_76_8KHZ)
@@ -1843,7 +1849,11 @@ static int ad4130_setup_int_clk(struct ad4130_state *st)
if (IS_ERR(clk))
return PTR_ERR(clk);
- return of_clk_add_provider(of_node, of_clk_src_simple_get, clk);
+ ret = of_clk_add_provider(of_node, of_clk_src_simple_get, clk);
+ if (ret)
+ return ret;
+
+ return devm_add_action_or_reset(dev, ad4130_clk_del_provider, of_node);
}
static int ad4130_setup(struct iio_dev *indio_dev)
--
2.30.2
