[PATCH] iio: pressure: dps310: fix NULL pointer dereference on ACPI probe

[Rupesh Majhi]

When the device is enumerated through its ACPI HID (IFX3100),
i2c_client_get_device_id() returns NULL: the ACPI-derived client name
does not match the driver's i2c_device_id table. dps310_probe() then
dereferences that NULL pointer in "iio->name = id->name" and crashes the
kernel during probe.

The IIO device name is always "dps310", so set it directly and drop the
now-unused device-id lookup.

Fixes: 72ff282819d0 ("iio: pressure: dps310: Add ACPI HID table")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Rupesh Majhi <zoone.rupert@xxxxxxxxx>
---
 drivers/iio/pressure/dps310.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/iio/pressure/dps310.c b/drivers/iio/pressure/dps310.c
index f45af72a0554..45bdb8c7670f 100644
--- a/drivers/iio/pressure/dps310.c
+++ b/drivers/iio/pressure/dps310.c
@@ -845,7 +845,6 @@ static const struct iio_info dps310_info = {
 
 static int dps310_probe(struct i2c_client *client)
 {
-	const struct i2c_device_id *id = i2c_client_get_device_id(client);
 	struct dps310_data *data;
 	struct iio_dev *iio;
 	int rc;
@@ -858,7 +857,7 @@ static int dps310_probe(struct i2c_client *client)
 	data->client = client;
 	mutex_init(&data->lock);
 
-	iio->name = id->name;
+	iio->name = DPS310_DEV_NAME;
 	iio->channels = dps310_channels;
 	iio->num_channels = ARRAY_SIZE(dps310_channels);
 	iio->info = &dps310_info;
-- 
2.43.0