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Subject[PATCH 2/3] spi: of: allow instantiating slaves without a driver
Date
SPI slave devices are not created when looking up driver for the slave
fails. Create a device anyway so it can be manually bound to a driver.

Signed-off-by: Michal Suchanek <hramrach@gmail.com>
---
drivers/spi/spi.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 0239b45..73b1125 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1477,9 +1477,8 @@ of_register_spi_device(struct spi_master *master, struct device_node *nc)
rc = of_modalias_node(nc, spi->modalias,
sizeof(spi->modalias));
if (rc < 0) {
- dev_err(&master->dev, "cannot find modalias for %s\n",
+ dev_warn(&master->dev, "cannot find modalias for %s\n",
nc->full_name);
- goto err_out;
}

/* Device address */
@@ -1543,11 +1542,10 @@ of_register_spi_device(struct spi_master *master, struct device_node *nc)
/* Device speed */
rc = of_property_read_u32(nc, "spi-max-frequency", &value);
if (rc) {
- dev_err(&master->dev, "%s has no valid 'spi-max-frequency' property (%d)\n",
+ dev_warn(&master->dev, "%s has no valid 'spi-max-frequency' property (%d)\n",
nc->full_name, rc);
- goto err_out;
- }
- spi->max_speed_hz = value;
+ } else
+ spi->max_speed_hz = value;

/* Store a pointer to the node in the device structure */
of_node_get(nc);
--
2.8.1
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