iio: adc: adi-axi-adc: Fix object reference counting

When looking for a registered client to attach with, the wrong reference
counters are being grabbed. The idea is to increment the module and device
counters of the client device and not the counters of the axi device being
probed.

Fixes: ef04070692a2 (iio: adc: adi-axi-adc: add support for AXI ADC IP core)
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Acked-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c
index c24c8da99eb47531ad6b7b13170b969c149932a5..7af8f0510535a25d2560b942127c0b1e9885fcc8 100644 (file)
--- a/drivers/iio/adc/adi-axi-adc.c
+++ b/drivers/iio/adc/adi-axi-adc.c
@@ -332,12 +332,12 @@ static struct adi_axi_adc_client *adi_axi_adc_attach_client(struct device *dev)
                if (cl->dev->of_node != cln)
                        continue;
 
-               if (!try_module_get(dev->driver->owner)) {
+               if (!try_module_get(cl->dev->driver->owner)) {
                        mutex_unlock(&registered_clients_lock);
                        return ERR_PTR(-ENODEV);
                }
 
-               get_device(dev);
+               get_device(cl->dev);
                cl->info = info;
                mutex_unlock(&registered_clients_lock);
                return cl;