6.16-stable review patch. If anyone has any objections, please let me know.
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From: Claudiu Beznea claudiu.beznea.uj@bp.renesas.com
commit c69e13965f26b8058f538ea8bdbd2d7718cf1fbe upstream.
When stress-testing the system by repeatedly unbinding and binding the ADC device in a loop, and the ADC is a supplier for another device (e.g., a thermal hardware block that reads temperature through the ADC), it may happen that the ADC device is runtime-resumed immediately after runtime PM is enabled, triggered by its consumer. At this point, since drvdata is not yet set and the driver's runtime PM callbacks rely on it, a crash can occur. To avoid this, set drvdata just after it was allocated.
Fixes: 89ee8174e8c8 ("iio: adc: rzg2l_adc: Simplify the runtime PM code") Signed-off-by: Claudiu Beznea claudiu.beznea.uj@bp.renesas.com Link: https://patch.msgid.link/20250810123328.800104-3-claudiu.beznea.uj@bp.renesa... Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/adc/rzg2l_adc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/iio/adc/rzg2l_adc.c +++ b/drivers/iio/adc/rzg2l_adc.c @@ -428,6 +428,8 @@ static int rzg2l_adc_probe(struct platfo if (!indio_dev) return -ENOMEM;
+ platform_set_drvdata(pdev, indio_dev); + adc = iio_priv(indio_dev);
adc->hw_params = device_get_match_data(dev); @@ -460,8 +462,6 @@ static int rzg2l_adc_probe(struct platfo if (ret) return ret;
- platform_set_drvdata(pdev, indio_dev); - ret = rzg2l_adc_hw_init(dev, adc); if (ret) return dev_err_probe(&pdev->dev, ret,