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iio: hid_Sensors: fix crash during trigger unregister

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We can't store the trigger instance created by iio_trigger_alloc, in
trig field of iio_device structure. This needs to be stored in the
driver private data. Othewise it can result in crash during module
unload. Hence created a trig_ptr in the common data structure
for each HID sensor IIO driver and storing here.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Srinivas Pandruvada 2013-10-30 22:48:00 +00:00 • committed by Jonathan Cameron
parent 00582bf8e7
commit ec7f68e07b
7 changed files with 20 additions and 14 deletions
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3
include/linux/hid-sensor-hub.h
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@ -21,6 +21,8 @@
#include <linux/hid.h>
#include <linux/hid-sensor-ids.h>
#include <linux/iio/iio.h>
#include <linux/iio/trigger.h>
/**
* struct hid_sensor_hub_attribute_info - Attribute info
@ -184,6 +186,7 @@ struct hid_sensor_common {
struct platform_device *pdev;
unsigned usage_id;
bool data_ready;
struct iio_trigger *trigger;
struct hid_sensor_hub_attribute_info poll;
struct hid_sensor_hub_attribute_info report_state;
struct hid_sensor_hub_attribute_info power_state;