iio:imu:mpu6050: Fixed segfault in Invensens MPU driver due to null dereference (b9b3a418) · Commits · 戴 / test

The driver segfaults when the kernel boots with device tree as the platform data is then not present and the pointer is deferenced without checking it is not null. This patch introduces such a check avoiding the crash. Signed-off-by:

Atilla Filiz <atilla.filiz@essensium.com> Signed-off-by:

Jonathan Cameron <jic23@kernel.org> Cc: Stable@vger.kernel.org

drivers/iio/imu/inv_mpu6050/inv_mpu_core.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -660,6 +660,7 @@ static int inv_mpu_probe(struct i2c_client *client,
		{
		struct inv_mpu6050_state *st;
		struct iio_dev *indio_dev;
		struct inv_mpu6050_platform_data *pdata;
		int result;

		if (!i2c_check_functionality(client->adapter,
		@@ -672,8 +673,10 @@ static int inv_mpu_probe(struct i2c_client *client,

		st = iio_priv(indio_dev);
		st->client = client;
		st->plat_data = *(struct inv_mpu6050_platform_data
		pdata = (struct inv_mpu6050_platform_data
		*)dev_get_platdata(&client->dev);
		if (pdata)
		st->plat_data = *pdata;
		/* power is turned on inside check chip type*/
		result = inv_check_and_setup_chip(st, id);
		if (result)

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