This change is needed to properly lock I2C bus driver, which serves DDC.
Prior to this change i2c_put_adapter() is misused, which may lead to an overflow over zero of I2C bus driver user counter.
Signed-off-by: Vladimir Zapolskiy vladimir_zapolskiy@mentor.com --- drivers/gpu/drm/tilcdc/tilcdc_tfp410.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c b/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c index 354c47c..4dc78c7 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c @@ -348,15 +348,13 @@ static int tfp410_probe(struct platform_device *pdev) goto fail; }
- tfp410_mod->i2c = of_find_i2c_adapter_by_node(i2c_node); + tfp410_mod->i2c = of_get_i2c_adapter_by_node(i2c_node); + of_node_put(i2c_node); if (!tfp410_mod->i2c) { dev_err(&pdev->dev, "could not get i2c\n"); - of_node_put(i2c_node); goto fail; }
- of_node_put(i2c_node); - tfp410_mod->gpio = of_get_named_gpio_flags(node, "powerdn-gpio", 0, NULL); if (IS_ERR_VALUE(tfp410_mod->gpio)) {