Merge tag 'spi-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "This release sees some exciting changes from David Lechner which
  implements some optimisations that have been talked about for a long
  time which allows client drivers to pre-prepare SPI messages for
  repeated or low latency use. This lets us move work out of latency
  sensitive paths and avoid repeating work for frequently performed
  operations. As well as being useful in itself this will also be used
  in future to allow controllers to directly trigger SPI operations (eg,
  from interrupts).

  Otherwise this release has mostly been focused on cleanups, plus a
  couple of new devices:

   - Support for pre-optimising messages

   - A big set of updates from Uwe Kleine-König moving drivers to use
     APIs with more modern terminology for controllers

   - Major overhaul of the s3c64xx driver

   - Support for Google GS101 and Samsung Exynos850"

* tag 'spi-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (122 commits)
  spi: Introduce SPI_INVALID_CS and is_valid_cs()
  spi: Fix types of the last chip select storage variables
  spi: Consistently use BIT for cs_index_mask
  spi: Exctract spi_dev_check_cs() helper
  spi: Exctract spi_set_all_cs_unused() helper
  spi: s3c64xx: switch exynos850 to new port config data
  spi: s3c64xx: switch gs101 to new port config data
  spi: s3c64xx: deprecate fifo_lvl_mask, rx_lvl_offset and port_id
  spi: s3c64xx: get rid of the OF alias ID dependency
  spi: s3c64xx: introduce s3c64xx_spi_set_port_id()
  spi: s3c64xx: let the SPI core determine the bus number
  spi: s3c64xx: allow FIFO depth to be determined from the compatible
  spi: s3c64xx: retrieve the FIFO depth from the device tree
  spi: s3c64xx: determine the fifo depth only once
  spi: s3c64xx: allow full FIFO masks
  spi: s3c64xx: define a magic value
  spi: dt-bindings: introduce FIFO depth properties
  spi: axi-spi-engine: use struct_size() macro
  spi: axi-spi-engine: use __counted_by() attribute
  spi: axi-spi-engine: remove p from struct spi_engine_message_state
  ...

1 files changed, 16 insertions, 6 deletions

diff --git a/drivers/spi/spi-cs42l43.c b/drivers/spi/spi-cs42l43.c
index adf19e8c4c8a..27c995b657f2 100644
--- a/drivers/spi/spi-cs42l43.c
+++ b/drivers/spi/spi-cs42l43.c
@@ -201,6 +201,11 @@ static size_t cs42l43_spi_max_length(struct spi_device *spi)
 	return CS42L43_SPI_MAX_LENGTH;
 }
 
+static void cs42l43_release_of_node(void *data)
+{
+	fwnode_handle_put(data);
+}
+
 static int cs42l43_spi_probe(struct platform_device *pdev)
 {
 	struct cs42l43 *cs42l43 = dev_get_drvdata(pdev->dev.parent);
@@ -227,12 +232,6 @@ static int cs42l43_spi_probe(struct platform_device *pdev)
 	priv->ctlr->transfer_one = cs42l43_transfer_one;
 	priv->ctlr->set_cs = cs42l43_set_cs;
 	priv->ctlr->max_transfer_size = cs42l43_spi_max_length;
-
-	if (is_of_node(fwnode))
-		fwnode = fwnode_get_named_child_node(fwnode, "spi");
-
-	device_set_node(&priv->ctlr->dev, fwnode);
-
 	priv->ctlr->mode_bits = SPI_3WIRE | SPI_MODE_X_MASK;
 	priv->ctlr->flags = SPI_CONTROLLER_HALF_DUPLEX;
 	priv->ctlr->bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16) |
@@ -256,6 +255,17 @@ static int cs42l43_spi_probe(struct platform_device *pdev)
 	regmap_write(priv->regmap, CS42L43_SPI_CONFIG3, 0);
 	regmap_write(priv->regmap, CS42L43_SPI_CONFIG4, CS42L43_SPI_STALL_ENA_MASK);
 
+	if (is_of_node(fwnode)) {
+		fwnode = fwnode_get_named_child_node(fwnode, "spi");
+		ret = devm_add_action(priv->dev, cs42l43_release_of_node, fwnode);
+		if (ret) {
+			fwnode_handle_put(fwnode);
+			return ret;
+		}
+	}
+
+	device_set_node(&priv->ctlr->dev, fwnode);
+
 	ret = devm_spi_register_controller(priv->dev, priv->ctlr);
 	if (ret) {
 		dev_err(priv->dev, "Failed to register SPI controller: %d\n", ret);