Merge tag 'char-misc-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big set of char and misc and other tiny driver subsystem
  updates for 5.16-rc1.

  Loads of things in here, all of which have been in linux-next for a
  while with no reported problems (except for one called out below.)

  Included are:

   - habanana labs driver updates, including dma_buf usage, reviewed and
     acked by the dma_buf maintainers

   - iio driver update (going through this tree not staging as they
     really do not belong going through that tree anymore)

   - counter driver updates

   - hwmon driver updates that the counter drivers needed, acked by the
     hwmon maintainer

   - xillybus driver updates

   - binder driver updates

   - extcon driver updates

   - dma_buf module namespaces added (will cause a build error in arm64
     for allmodconfig, but that change is on its way through the drm
     tree)

   - lkdtm driver updates

   - pvpanic driver updates

   - phy driver updates

   - virt acrn and nitr_enclaves driver updates

   - smaller char and misc driver updates"

* tag 'char-misc-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (386 commits)
  comedi: dt9812: fix DMA buffers on stack
  comedi: ni_usb6501: fix NULL-deref in command paths
  arm64: errata: Enable TRBE workaround for write to out-of-range address
  arm64: errata: Enable workaround for TRBE overwrite in FILL mode
  coresight: trbe: Work around write to out of range
  coresight: trbe: Make sure we have enough space
  coresight: trbe: Add a helper to determine the minimum buffer size
  coresight: trbe: Workaround TRBE errata overwrite in FILL mode
  coresight: trbe: Add infrastructure for Errata handling
  coresight: trbe: Allow driver to choose a different alignment
  coresight: trbe: Decouple buffer base from the hardware base
  coresight: trbe: Add a helper to pad a given buffer area
  coresight: trbe: Add a helper to calculate the trace generated
  coresight: trbe: Defer the probe on offline CPUs
  coresight: trbe: Fix incorrect access of the sink specific data
  coresight: etm4x: Add ETM PID for Kryo-5XX
  coresight: trbe: Prohibit trace before disabling TRBE
  coresight: trbe: End the AUX handle on truncation
  coresight: trbe: Do not truncate buffer on IRQ
  coresight: trbe: Fix handling of spurious interrupts
  ...

1 files changed, 22 insertions, 48 deletions

diff --git a/drivers/iio/adc/ad7291.c b/drivers/iio/adc/ad7291.c
index 2301a0e27f23..e9129dac762f 100644
--- a/drivers/iio/adc/ad7291.c
+++ b/drivers/iio/adc/ad7291.c
@@ -460,6 +460,11 @@ static const struct iio_info ad7291_info = {
 	.write_event_value = &ad7291_write_event_value,
 };
 
+static void ad7291_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int ad7291_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
@@ -473,8 +478,6 @@ static int ad7291_probe(struct i2c_client *client,
 	chip = iio_priv(indio_dev);
 
 	mutex_init(&chip->state_lock);
-	/* this is only used for device removal purposes */
-	i2c_set_clientdata(client, indio_dev);
 
 	chip->client = client;
 
@@ -495,6 +498,11 @@ static int ad7291_probe(struct i2c_client *client,
 		if (ret)
 			return ret;
 
+		ret = devm_add_action_or_reset(&client->dev, ad7291_reg_disable,
+					       chip->reg);
+		if (ret)
+			return ret;
+
 		chip->command |= AD7291_EXT_REF;
 	}
 
@@ -506,58 +514,25 @@ static int ad7291_probe(struct i2c_client *client,
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	ret = ad7291_i2c_write(chip, AD7291_COMMAND, AD7291_RESET);
-	if (ret) {
-		ret = -EIO;
-		goto error_disable_reg;
-	}
+	if (ret)
+		return -EIO;
 
 	ret = ad7291_i2c_write(chip, AD7291_COMMAND, chip->command);
-	if (ret) {
-		ret = -EIO;
-		goto error_disable_reg;
-	}
+	if (ret)
+		return -EIO;
 
 	if (client->irq > 0) {
-		ret = request_threaded_irq(client->irq,
-					   NULL,
-					   &ad7291_event_handler,
-					   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
-					   id->name,
-					   indio_dev);
+		ret = devm_request_threaded_irq(&client->dev, client->irq,
+						NULL,
+						&ad7291_event_handler,
+						IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+						id->name,
+						indio_dev);
 		if (ret)
-			goto error_disable_reg;
+			return ret;
 	}
 
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_unreg_irq;
-
-	return 0;
-
-error_unreg_irq:
-	if (client->irq)
-		free_irq(client->irq, indio_dev);
-error_disable_reg:
-	if (chip->reg)
-		regulator_disable(chip->reg);
-
-	return ret;
-}
-
-static int ad7291_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	struct ad7291_chip_info *chip = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-
-	if (client->irq)
-		free_irq(client->irq, indio_dev);
-
-	if (chip->reg)
-		regulator_disable(chip->reg);
-
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
 static const struct i2c_device_id ad7291_id[] = {
@@ -579,7 +554,6 @@ static struct i2c_driver ad7291_driver = {
 		.of_match_table = ad7291_of_match,
 	},
 	.probe = ad7291_probe,
-	.remove = ad7291_remove,
 	.id_table = ad7291_id,
 };
 module_i2c_driver(ad7291_driver);