6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Nuno Sa <nuno.sa@xxxxxxxxxx>
commit fb5cc65f973661241e4a2b7390b429aa7b330c69 upstream.
We register a devm action to call adp5589_clear_config() and then pass
the i2c client as argument so that we can call i2c_get_clientdata() in
order to get our device object. However, i2c_set_clientdata() is only
being set at the end of the probe function which means that we'll get a
NULL pointer dereference in case the probe function fails early.
Fixes: 30df385e35a4 ("Input: adp5589-keys - use devm_add_action_or_reset() for register clear")
Signed-off-by: Nuno Sa <nuno.sa@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20241001-b4-dev-adp5589-fw-conversion-v1-1-fca0149dfc47@xxxxxxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/input/keyboard/adp5589-keys.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
--- a/drivers/input/keyboard/adp5589-keys.c
+++ b/drivers/input/keyboard/adp5589-keys.c
@@ -936,10 +936,9 @@ static int adp5589_keypad_add(struct adp
static void adp5589_clear_config(void *data)
{
- struct i2c_client *client = data;
- struct adp5589_kpad *kpad = i2c_get_clientdata(client);
+ struct adp5589_kpad *kpad = data;
- adp5589_write(client, kpad->var->reg(ADP5589_GENERAL_CFG), 0);
+ adp5589_write(kpad->client, kpad->var->reg(ADP5589_GENERAL_CFG), 0);
}
static int adp5589_probe(struct i2c_client *client)
@@ -983,7 +982,7 @@ static int adp5589_probe(struct i2c_clie
}
error = devm_add_action_or_reset(&client->dev, adp5589_clear_config,
- client);
+ kpad);
if (error)
return error;
@@ -1010,8 +1009,6 @@ static int adp5589_probe(struct i2c_clie
if (error)
return error;
- i2c_set_clientdata(client, kpad);
-
dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
return 0;
}
