From: Cezary Rojewski <cezary.rojewski@xxxxxxxxx> To prevent rmmod and similar behave unexpectedly when invoked on snd_soc_avs module while the AudioDSP firmware tracing is ongoing, increase the module refcount until the tracing is stopped. Signed-off-by: Cezary Rojewski <cezary.rojewski@xxxxxxxxx> Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx> --- sound/soc/intel/avs/debugfs.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sound/soc/intel/avs/debugfs.c b/sound/soc/intel/avs/debugfs.c index bdd388ec01ea..4dfbff0ce508 100644 --- a/sound/soc/intel/avs/debugfs.c +++ b/sound/soc/intel/avs/debugfs.c @@ -236,6 +236,9 @@ static int strace_open(struct inode *inode, struct file *file) struct avs_dev *adev = inode->i_private; int ret; + if (!try_module_get(adev->dev->driver->owner)) + return -ENODEV; + if (kfifo_initialized(&adev->trace_fifo)) return -EBUSY; @@ -270,6 +273,7 @@ static int strace_release(struct inode *inode, struct file *file) spin_unlock_irqrestore(&adev->trace_lock, flags); + module_put(adev->dev->driver->owner); return 0; } -- 2.34.1
