[PATCH 6.1.y] iio: pressure: dps310: fix NULL pointer dereference on ACPI probe

[Sasha Levin <sashal@kernel.org>]

From: Rupesh Majhi <zoone.rupert@gmail.com>

[ Upstream commit 26e9213898fc949923188ef0aeea31fc87708836 ]

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@vger.kernel.org
Signed-off-by: Rupesh Majhi <zoone.rupert@gmail.com>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iio/pressure/dps310.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/pressure/dps310.c b/drivers/iio/pressure/dps310.c
index 519fcd425b6a3..0057e14a45ddc 100644
--- a/drivers/iio/pressure/dps310.c
+++ b/drivers/iio/pressure/dps310.c
@@ -843,7 +843,7 @@ 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;
-- 
2.53.0