From 53969c730f4b9c417eed63486f9a1fa898d89ba1 Mon Sep 17 00:00:00 2001
From: The-going <48602507+The-going@users.noreply.github.com>
Date: Wed, 2 Feb 2022 11:56:51 +0300
Subject: [PATCH 055/169] drv:spi:spidev remove warnings

---
 drivers/spi/spidev.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 53a551714..be1bdd509 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -681,6 +681,7 @@ static const struct file_operations spidev_fops = {
 static struct class *spidev_class;
 
 static const struct spi_device_id spidev_spi_ids[] = {
+	{ .name = "spi-dev" },
 	{ .name = "dh2228fv" },
 	{ .name = "ltc2488" },
 	{ .name = "sx1301" },
@@ -695,6 +696,7 @@ MODULE_DEVICE_TABLE(spi, spidev_spi_ids);
 
 #ifdef CONFIG_OF
 static const struct of_device_id spidev_dt_ids[] = {
+	{ .compatible = "armbian,spi-dev" },
 	{ .compatible = "rohm,dh2228fv" },
 	{ .compatible = "lineartechnology,ltc2488" },
 	{ .compatible = "semtech,sx1301" },
@@ -757,9 +759,14 @@ static int spidev_probe(struct spi_device *spi)
 	 * spidev should never be referenced in DT without a specific
 	 * compatible string, it is a Linux implementation thing
 	 * rather than a description of the hardware.
+	 * But people don't care and use DT overlays to activate SPIdev
+	 * on demand. Armbian has added a compatible string alias "spi-dev"
+	 * for this module.
 	 */
+
 	if (spi->dev.of_node && of_device_is_compatible(spi->dev.of_node, "spidev")) {
 		dev_err(&spi->dev, "spidev listed directly in DT is not supported\n");
+		dev_info(&spi->dev, "Use a compatible alias string like spi-dev in DT\n");
 		return -EINVAL;
 	}
 
-- 
2.35.3