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Input: cypress-sf - register a callback to disable the regulators

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When the driver fails to probe, we will get the following splat:

[   19.311970] ------------[ cut here ]------------
[   19.312566] WARNING: CPU: 3 PID: 375 at drivers/regulator/core.c:2257 _regulator_put+0x3ec/0x4e0
[   19.317591] RIP: 0010:_regulator_put+0x3ec/0x4e0
[   19.328831] Call Trace:
[   19.329112]  <TASK>
[   19.329369]  regulator_bulk_free+0x82/0xe0
[   19.329860]  devres_release_group+0x319/0x3d0
[   19.330357]  i2c_device_probe+0x766/0x940

Fix this by adding a callback that will deal with the disabling when the
driver fails to probe.

Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Link: https://lore.kernel.org/r/20220409022629.3493557-1-zheyuma97@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Zheyu Ma 2022-04-08 19:30:49 -07:00 committed by Dmitry Torokhov
parent 8b188fba75
commit fd0a4b3987
1 changed files with 14 additions and 0 deletions
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14
drivers/input/keyboard/cypress-sf.c
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@ -61,6 +61,14 @@ static irqreturn_t cypress_sf_irq_handler(int irq, void *devid)
return IRQ_HANDLED;
}
static void cypress_sf_disable_regulators(void *arg)
{
struct cypress_sf_data *touchkey = arg;
regulator_bulk_disable(ARRAY_SIZE(touchkey->regulators),
touchkey->regulators);
}
static int cypress_sf_probe(struct i2c_client *client)
{
struct cypress_sf_data *touchkey;
@ -121,6 +129,12 @@ static int cypress_sf_probe(struct i2c_client *client)
return error;
}
error = devm_add_action_or_reset(&client->dev,
cypress_sf_disable_regulators,
touchkey);
if (error)
return error;
touchkey->input_dev = devm_input_allocate_device(&client->dev);
if (!touchkey->input_dev) {
dev_err(&client->dev, "Failed to allocate input device\n");