From: Lukas Wunner lukas@wunner.de
commit 5b8c88462d83331dacb48aeaec8388117fef82e0 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: f99008013e19 ("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.160728688... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/spi/spi-sc18is602.c | 13 ++----------- 1 file changed, 2 insertions(+), 11 deletions(-)
--- a/drivers/spi/spi-sc18is602.c +++ b/drivers/spi/spi-sc18is602.c @@ -239,13 +239,12 @@ static int sc18is602_probe(struct i2c_cl struct sc18is602_platform_data *pdata = dev_get_platdata(dev); struct sc18is602 *hw; struct spi_master *master; - int error;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C | I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) return -EINVAL;
- master = spi_alloc_master(dev, sizeof(struct sc18is602)); + master = devm_spi_alloc_master(dev, sizeof(struct sc18is602)); if (!master) return -ENOMEM;
@@ -299,15 +298,7 @@ static int sc18is602_probe(struct i2c_cl master->min_speed_hz = hw->freq / 128; master->max_speed_hz = hw->freq / 4;
- error = devm_spi_register_master(dev, master); - if (error) - goto error_reg; - - return 0; - -error_reg: - spi_master_put(master); - return error; + return devm_spi_register_master(dev, master); }
static const struct i2c_device_id sc18is602_id[] = {