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| author | Nick Vaccaro <nvaccaro@google.com> | 2014-03-17 13:05:09 -0700 |
|---|---|---|
| committer | Nick Vaccaro <nvaccaro@google.com> | 2014-03-17 13:05:09 -0700 |
| commit | 93bf99647b0d33dfe12deecef828b6bcb568cafe (patch) | |
| tree | edc8be7e80237de512a54fa9a76a1c894737da36 /modules/sensors/multihal.cpp | |
| parent | 98add8956b1a346425df40d2f70a9ca33500f01c (diff) | |
| download | hardware_libhardware-93bf99647b0d33dfe12deecef828b6bcb568cafe.zip hardware_libhardware-93bf99647b0d33dfe12deecef828b6bcb568cafe.tar.gz hardware_libhardware-93bf99647b0d33dfe12deecef828b6bcb568cafe.tar.bz2 | |
Fix sensor multi hal crash when sub-HAL reports an error
Fix a null pointer dereference bug that caused the multihal to crash
in an endless loop continuously trying to open a sensor HAL when it
reports back an error.
Change-Id: I6d82e8fdd9acde53f378a5fb3dfdb02c39d7b433
Diffstat (limited to 'modules/sensors/multihal.cpp')
| -rw-r--r-- | modules/sensors/multihal.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/modules/sensors/multihal.cpp b/modules/sensors/multihal.cpp index a145c37..36345f9 100644 --- a/modules/sensors/multihal.cpp +++ b/modules/sensors/multihal.cpp @@ -214,9 +214,11 @@ int sensors_poll_context_t::get_device_version_by_handle(int handle) { } int sensors_poll_context_t::activate(int handle, int enabled) { + int retval = -EINVAL; ALOGV("activate"); sensors_poll_device_t* v0 = this->get_v0_device_by_handle(handle); - int retval = v0->activate(v0, get_local_handle(handle), enabled); + if (v0) + retval = v0->activate(v0, get_local_handle(handle), enabled); ALOGV("retval %d", retval); return retval; } @@ -576,7 +578,8 @@ static int open_sensors(const struct hw_module_t* hw_module, const char* name, sensors_module_t *sensors_module = (sensors_module_t*) *it; struct hw_device_t* sub_hw_device; int sub_open_result = sensors_module->common.methods->open(*it, name, &sub_hw_device); - dev->addSubHwDevice(sub_hw_device); + if (!sub_open_result) + dev->addSubHwDevice(sub_hw_device); } // Prepare the output param and return |