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authorAlexander Shishkin <alexander.shishkin@linux.intel.com>2017-02-24 16:04:15 +0200
committerAlexander Shishkin <alexander.shishkin@linux.intel.com>2017-03-15 14:54:57 +0200
commite609ccef5222c73b46b322be7d3796d60bff353d (patch)
tree3f96ebd7672d7571b7b7c014f169ef6124ecfad2 /drivers/hwtracing
parent4495c08e84729385774601b5146d51d9e5849f81 (diff)
intel_th: Don't leak module refcount on failure to activate
Output 'activation' may fail for the reasons of the output driver, for example, if msc's buffer is not allocated. We forget, however, to drop the module reference in this case. So each attempt at activation in this case leaks a reference, preventing the module from ever unloading. This patch adds the missing module_put() in the activation error path. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: stable@vger.kernel.org # v4.8+
Diffstat (limited to 'drivers/hwtracing')
-rw-r--r--drivers/hwtracing/intel_th/core.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c
index cdd9b3b26195..7563eceeaaea 100644
--- a/drivers/hwtracing/intel_th/core.c
+++ b/drivers/hwtracing/intel_th/core.c
@@ -221,8 +221,10 @@ static int intel_th_output_activate(struct intel_th_device *thdev)
else
intel_th_trace_enable(thdev);
- if (ret)
+ if (ret) {
pm_runtime_put(&thdev->dev);
+ module_put(thdrv->driver.owner);
+ }
return ret;
}