…
> +++ b/drivers/iio/industrialio-buffer.c
…
> static int iio_buffer_chrdev_release(struct inode *inode, struct file *filep)
> {
…
> wake_up(&buffer->pollq);
>
> + mutex_lock(&buffer->dmabufs_mutex);
> +
> + /* Close all attached DMABUFs */
…
> + mutex_unlock(&buffer->dmabufs_mutex);
> +
> kfree(ib);
…
Would you become interested to apply a statement like “guard(mutex)(&buffer->dmabufs_mutex);”?
https://elixir.bootlin.com/linux/v6.10-rc3/source/include/linux/mutex.h#L196
Regards,
Markus
