From 3076066bb5076411627f9dffd9d59ff2497f7eac Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Fri, 24 Feb 2017 16:04:15 +0200 Subject: [PATCH] intel_th: Don't leak module refcount on failure to activate commit e609ccef5222c73b46b322be7d3796d60bff353d upstream. 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 Signed-off-by: Greg Kroah-Hartman --- drivers/hwtracing/intel_th/core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c index 6f0a51a2c6ec..d439736c789b 100644 --- a/drivers/hwtracing/intel_th/core.c +++ b/drivers/hwtracing/intel_th/core.c @@ -218,8 +218,10 @@ 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; } -- 2.17.1