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iio: ad4130: Make sure clock provider gets removed 

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: 62094060cf ("iio: adc: ad4130: add AD4130 driver")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20230414150702.518441-1-lars@metafoo.de
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Lars-Peter Clausen 2023-04-14 08:07:02 -07:00 committed by Jonathan Cameron
parent 265c82ea8b
commit 28f73ded19
1 changed files with 11 additions and 1 deletions
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12
drivers/iio/adc/ad4130.c
View File

@ -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)