Re: [PATCH] iio: adc: meson-saradc: fix calibration buffer leak on error

[David Lechner <dlechner@baylibre.com>]

On 4/25/26 11:07 AM, Felix Gu wrote:
> meson_sar_adc_temp_sensor_init() allocates a buffer with
> nvmem_cell_read(), but the old code leaked it if
> syscon_regmap_lookup_by_phandle() failed.
> 
> Switch buf to __free(kfree) so all return paths release it.
> 
> Fixes: d6f2eac64403 ("iio: adc: meson: no devm for nvmem_cell_get")
> Signed-off-by: Felix Gu <ustc.gu@gmail.com>
> ---
>  drivers/iio/adc/meson_saradc.c | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c
> index 23991a3612bd..9708ddcc4919 100644
> --- a/drivers/iio/adc/meson_saradc.c
> +++ b/drivers/iio/adc/meson_saradc.c
> @@ -786,7 +786,7 @@ static int meson_sar_adc_clk_init(struct iio_dev *indio_dev,
>  static int meson_sar_adc_temp_sensor_init(struct iio_dev *indio_dev)
>  {

Nice to see one of these cleanup.h patches that is actually fixing a bug.

Should `#include <linux/cleanup.h>` though rather that relying on it being
included through another header.

With that fixed...

Reviewed-by: David Lechner <dlechner@baylibre.com>