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ASoC: Intel: avs: Keep module refcount up when gathering traces

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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@intel.com>
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Link: https://lore.kernel.org/r/20230929112436.787058-5-amadeuszx.slawinski@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Cezary Rojewski 2023-09-29 13:24:34 +02:00 committed by Mark Brown
parent 28a21cb264
commit 0a5fb3cc28
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1 changed files with 4 additions and 0 deletions
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4
sound/soc/intel/avs/debugfs.c
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@ -236,6 +236,9 @@ static int strace_open(struct inode *inode, struct file *file)
struct avs_dev *adev = inode->i_private; struct avs_dev *adev = inode->i_private;
int ret; int ret;
if (!try_module_get(adev->dev->driver->owner))
return -ENODEV;
if (kfifo_initialized(&adev->trace_fifo)) if (kfifo_initialized(&adev->trace_fifo))
return -EBUSY; return -EBUSY;
@ -270,6 +273,7 @@ static int strace_release(struct inode *inode, struct file *file)
spin_unlock_irqrestore(&adev->trace_lock, flags); spin_unlock_irqrestore(&adev->trace_lock, flags);
module_put(adev->dev->driver->owner);
return 0; return 0;
} }