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authorTrent Piepho <tpiepho@impinj.com>2018-09-20 22:18:34 +0300
committerMark Brown <broonie@kernel.org>2018-10-10 15:46:54 +0300
commit605b3bec73cbd74b4ac937b580cd0b47d1300484 (patch)
tree0779d01514d4268bb580f3eca5666cde20205eb4 /drivers/spi/spidev.c
parent5039563e7c25eccd7fec1de6706011009d1c5665 (diff)
downloadlinux-605b3bec73cbd74b4ac937b580cd0b47d1300484.tar.xz
spi: spidev: Fix OF tree warning logic
spidev will make a big fuss if a device tree node binds a device by using "spidev" as the node's compatible property. However, the logic for this isn't looking for "spidev" in the compatible, but rather checking that the device is NOT compatible with spidev's list of devices. This causes a false positive if a device not named "rohm,dh2228fv", etc. binds to spidev, even if a means other than putting "spidev" in the device tree was used. E.g., the sysfs driver_override attribute. Signed-off-by: Trent Piepho <tpiepho@impinj.com> Reviewed-by: Jan Kundrát <jan.kundrat@cesnet.cz> Tested-by: Jan Kundrát <jan.kundrat@cesnet.cz> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spidev.c')
-rw-r--r--drivers/spi/spidev.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 07f4d05563ea..b0c76e2626ce 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -725,11 +725,9 @@ static int spidev_probe(struct spi_device *spi)
* compatible string, it is a Linux implementation thing
* rather than a description of the hardware.
*/
- if (spi->dev.of_node && !of_match_device(spidev_dt_ids, &spi->dev)) {
- dev_err(&spi->dev, "buggy DT: spidev listed directly in DT\n");
- WARN_ON(spi->dev.of_node &&
- !of_match_device(spidev_dt_ids, &spi->dev));
- }
+ WARN(spi->dev.of_node &&
+ of_device_is_compatible(spi->dev.of_node, "spidev"),
+ "%pOF: buggy DT: spidev listed directly in DT\n", spi->dev.of_node);
spidev_probe_acpi(spi);