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stm class: Fix master deallocation in device unregistering 

The device unregister path uses wrong master index range when it tries
to free the allocated masters, it should, as does the rest of the stm
class code, use real master IDs.

This patch fixes the device unregister path to use real master IDs to
avoid memory leaks after unloading the stm driver.

Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
[alexander.shishkin@intel.com: re-wrote the commit message]
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunyan Zhang 2016-02-15 19:11:52 +02:00 committed by Greg Kroah-Hartman
parent f45f40ad65
commit 73a3ed1903
1 changed files with 1 additions and 1 deletions
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2
drivers/hwtracing/stm/core.c
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@ -690,7 +690,7 @@ void stm_unregister_device(struct stm_data *stm_data)
stp_policy_unbind(stm->policy);
mutex_unlock(&stm->policy_mutex);
for (i = 0; i < stm->sw_nmasters; i++)
for (i = stm->data->sw_start; i <= stm->data->sw_end; i++)
stp_master_free(stm, i);
device_unregister(&stm->dev);