diff options
| author | Takashi Iwai <tiwai@suse.de> | 2021-05-30 21:43:36 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2021-05-30 21:53:48 -0700 |
| commit | b9c0ebb867d67cc4e9e1a7a2abf0ac9a2cc02051 (patch) | |
| tree | 22976d83803d6e850ca8d2d2a1c43bca21449dc0 /drivers/input | |
| parent | 0b1d6c8c00157cbfcf343925c4de81af0187a7b7 (diff) | |
Input: elants_i2c - fix NULL dereference at probing
The recent change in elants_i2c driver to support more chips
introduced a regression leading to Oops at probing. The driver reads
id->driver_data, but the id may be NULL depending on the device type
the driver gets bound.
Replace the driver data extraction with the device_get_match_data()
helper, and define the driver data in OF table, too.
Fixes: 9517b95bdc46 ("Input: elants_i2c - add support for eKTF3624")
BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1186454
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210528071024.26450-1-tiwai@suse.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/touchscreen/elants_i2c.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c index 17540bdb1eaf..0f9e3ec99aae 100644 --- a/drivers/input/touchscreen/elants_i2c.c +++ b/drivers/input/touchscreen/elants_i2c.c @@ -1396,7 +1396,7 @@ static int elants_i2c_probe(struct i2c_client *client, init_completion(&ts->cmd_done); ts->client = client; - ts->chip_id = (enum elants_chip_id)id->driver_data; + ts->chip_id = (enum elants_chip_id)(uintptr_t)device_get_match_data(&client->dev); i2c_set_clientdata(client, ts); ts->vcc33 = devm_regulator_get(&client->dev, "vcc33"); @@ -1636,8 +1636,8 @@ MODULE_DEVICE_TABLE(acpi, elants_acpi_id); #ifdef CONFIG_OF static const struct of_device_id elants_of_match[] = { - { .compatible = "elan,ekth3500" }, - { .compatible = "elan,ektf3624" }, + { .compatible = "elan,ekth3500", .data = (void *)EKTH3500 }, + { .compatible = "elan,ektf3624", .data = (void *)EKTF3624 }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, elants_of_match); |