The sensor is powered by three supplies. Use the bulk regulator API to enable and disable them instead of performing the operations manually. This fixes a warning caused by ignoring the return value of regulator_enable().
Signed-off-by: Laurent Pinchart <[email protected]> --- drivers/media/i2c/mt9p031.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) Changes since v1: - Return the devm_regulator_bulk_get() return code instead of -ENODEV diff --git a/drivers/media/i2c/mt9p031.c b/drivers/media/i2c/mt9p031.c index 6187416..c93640b 100644 --- a/drivers/media/i2c/mt9p031.c +++ b/drivers/media/i2c/mt9p031.c @@ -126,9 +126,7 @@ struct mt9p031 { int power_count; struct clk *clk; - struct regulator *vaa; - struct regulator *vdd; - struct regulator *vdd_io; + struct regulator_bulk_data regulators[3]; enum mt9p031_model model; struct aptina_pll pll; @@ -273,6 +271,8 @@ static inline int mt9p031_pll_disable(struct mt9p031 *mt9p031) static int mt9p031_power_on(struct mt9p031 *mt9p031) { + int ret; + /* Ensure RESET_BAR is low */ if (gpio_is_valid(mt9p031->reset)) { gpio_set_value(mt9p031->reset, 0); @@ -280,9 +280,10 @@ static int mt9p031_power_on(struct mt9p031 *mt9p031) } /* Bring up the supplies */ - regulator_enable(mt9p031->vdd); - regulator_enable(mt9p031->vdd_io); - regulator_enable(mt9p031->vaa); + ret = regulator_bulk_enable(ARRAY_SIZE(mt9p031->regulators), + mt9p031->regulators); + if (ret < 0) + return ret; /* Emable clock */ if (mt9p031->clk) @@ -304,9 +305,8 @@ static void mt9p031_power_off(struct mt9p031 *mt9p031) usleep_range(1000, 2000); } - regulator_disable(mt9p031->vaa); - regulator_disable(mt9p031->vdd_io); - regulator_disable(mt9p031->vdd); + regulator_bulk_disable(ARRAY_SIZE(mt9p031->regulators), + mt9p031->regulators); if (mt9p031->clk) clk_disable_unprepare(mt9p031->clk); @@ -986,14 +986,14 @@ static int mt9p031_probe(struct i2c_client *client, mt9p031->model = did->driver_data; mt9p031->reset = -1; - mt9p031->vaa = devm_regulator_get(&client->dev, "vaa"); - mt9p031->vdd = devm_regulator_get(&client->dev, "vdd"); - mt9p031->vdd_io = devm_regulator_get(&client->dev, "vdd_io"); + mt9p031->regulators[0].supply = "vdd"; + mt9p031->regulators[1].supply = "vdd_io"; + mt9p031->regulators[2].supply = "vaa"; - if (IS_ERR(mt9p031->vaa) || IS_ERR(mt9p031->vdd) || - IS_ERR(mt9p031->vdd_io)) { + ret = devm_regulator_bulk_get(&client->dev, 3, mt9p031->regulators); + if (ret < 0) { dev_err(&client->dev, "Unable to get regulators\n"); - return -ENODEV; + return ret; } v4l2_ctrl_handler_init(&mt9p031->ctrls, ARRAY_SIZE(mt9p031_ctrls) + 6); -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
