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spi: fix device-node leaks 

Make sure to release the device-node reference taken in
of_register_spi_device() on errors and when deregistering the device.

Fixes: 284b018973 ("spi: Add OF binding support for SPI busses")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Johan Hovold 2017-01-30 17:47:05 +01:00 committed by Mark Brown
parent 31ae779421
commit 8324147f38
1 changed files with 6 additions and 2 deletions
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8
drivers/spi/spi.c
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@ -621,8 +621,10 @@ void spi_unregister_device(struct spi_device *spi)
if (!spi)
return;
if (spi->dev.of_node)
if (spi->dev.of_node) {
of_node_clear_flag(spi->dev.of_node, OF_POPULATED);
of_node_put(spi->dev.of_node);
}
if (ACPI_COMPANION(&spi->dev))
acpi_device_clear_enumerated(ACPI_COMPANION(&spi->dev));
device_unregister(&spi->dev);
@ -1603,11 +1605,13 @@ of_register_spi_device(struct spi_master *master, struct device_node *nc)
if (rc) {
dev_err(&master->dev, "spi_device register error %s\n",
nc->full_name);
goto err_out;
goto err_of_node_put;
}
return spi;
err_of_node_put:
of_node_put(nc);
err_out:
spi_dev_put(spi);
return ERR_PTR(rc);