From: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@xxxxxxx>
commit 106b391e1b859100a3f38f0ad874236e9be06bde upstream.
The 0 value used for INV_CHIP_ICM42600 was not working since the
match in i2c/spi was checking against NULL value.
To keep this check, add a first INV_CHIP_INVALID 0 value as safe
guard.
Fixes: 31c24c1e93c3 ("iio: imu: inv_icm42600: add core of new inv_icm42600 driver")
Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@xxxxxxx>
Link: https://lore.kernel.org/r/20220609102301.4794-1-jmaneyrol@xxxxxxxxxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/imu/inv_icm42600/inv_icm42600.h | 1 +
drivers/iio/imu/inv_icm42600/inv_icm42600_core.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600.h
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600.h
@@ -17,6 +17,7 @@
#include "inv_icm42600_buffer.h"
enum inv_icm42600_chip {
+ INV_CHIP_INVALID,
INV_CHIP_ICM42600,
INV_CHIP_ICM42602,
INV_CHIP_ICM42605,
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
@@ -565,7 +565,7 @@ int inv_icm42600_core_probe(struct regma
bool open_drain;
int ret;
- if (chip < 0 || chip >= INV_CHIP_NB) {
+ if (chip <= INV_CHIP_INVALID || chip >= INV_CHIP_NB) {
dev_err(dev, "invalid chip = %d\n", chip);
return -ENODEV;
}
