diff mbox series

[v5,4/4] spi: s3c64xx: allow controller-data to be optional

Message ID 20220120175747.43403-5-krzysztof.kozlowski@canonical.com
State Accepted
Commit 7db7a24657c969291921d6580d62748b1320dd2f
Headers show
Series spi: dt-bindings: samsung: convert to dtschema | expand

Commit Message

Krzysztof Kozlowski Jan. 20, 2022, 5:57 p.m. UTC 
The Samsung SoC SPI driver requires to provide controller-data node
for each of SPI peripheral device nodes.  Make this controller-data node
optional, so DTS could be simpler.

Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Andi Shyti <andi@etezian.org>
---
 drivers/spi/spi-s3c64xx.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 8755cd85e83c..386550fca81c 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -796,16 +796,14 @@  static struct s3c64xx_spi_csinfo *s3c64xx_get_slave_ctrldata(
 		return ERR_PTR(-EINVAL);
 	}
 
-	data_np = of_get_child_by_name(slave_np, "controller-data");
-	if (!data_np) {
-		dev_err(&spi->dev, "child node 'controller-data' not found\n");
-		return ERR_PTR(-EINVAL);
-	}
-
 	cs = kzalloc(sizeof(*cs), GFP_KERNEL);
-	if (!cs) {
-		of_node_put(data_np);
+	if (!cs)
 		return ERR_PTR(-ENOMEM);
+
+	data_np = of_get_child_by_name(slave_np, "controller-data");
+	if (!data_np) {
+		dev_info(&spi->dev, "feedback delay set to default (0)\n");
+		return cs;
 	}
 
 	of_property_read_u32(data_np, "samsung,spi-feedback-delay", &fb_delay);