spi: sc18is602: Don't leak SPI master in probe error path
commit5.4-rM2-2.2.x-imx-squashed5b8c88462d
upstream. If the call to devm_gpiod_get_optional() fails on probe of the NXP SC18IS602/603 SPI driver, the spi_master struct is erroneously not freed. Fix by switching over to the new devm_spi_alloc_master() helper. Fixes:f99008013e
("spi: sc18is602: Add reset control via gpio pin.") Signed-off-by: Lukas Wunner <lukas@wunner.de> Cc: <stable@vger.kernel.org> # v4.9+: 5e844cc37a5c: spi: Introduce device-managed SPI controller allocation Cc: <stable@vger.kernel.org> # v4.9+ Cc: Phil Reid <preid@electromag.com.au> Link: https://lore.kernel.org/r/d5f715527b894b91d530fe11a86f51b3184a4e1a.1607286887.git.lukas@wunner.de Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
819f9edaae
commit
3c0e28f288
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@ -239,13 +239,12 @@ static int sc18is602_probe(struct i2c_client *client,
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struct sc18is602_platform_data *pdata = dev_get_platdata(dev);
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struct sc18is602_platform_data *pdata = dev_get_platdata(dev);
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struct sc18is602 *hw;
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struct sc18is602 *hw;
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struct spi_master *master;
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struct spi_master *master;
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int error;
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C |
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C |
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I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
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I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
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return -EINVAL;
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return -EINVAL;
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master = spi_alloc_master(dev, sizeof(struct sc18is602));
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master = devm_spi_alloc_master(dev, sizeof(struct sc18is602));
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if (!master)
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if (!master)
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return -ENOMEM;
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return -ENOMEM;
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@ -299,15 +298,7 @@ static int sc18is602_probe(struct i2c_client *client,
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master->min_speed_hz = hw->freq / 128;
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master->min_speed_hz = hw->freq / 128;
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master->max_speed_hz = hw->freq / 4;
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master->max_speed_hz = hw->freq / 4;
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error = devm_spi_register_master(dev, master);
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return devm_spi_register_master(dev, master);
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if (error)
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goto error_reg;
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return 0;
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error_reg:
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spi_master_put(master);
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return error;
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}
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}
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static const struct i2c_device_id sc18is602_id[] = {
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static const struct i2c_device_id sc18is602_id[] = {
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