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@@ -654,7 +654,7 @@ static ssize_t stk_read(struct file *fp, char __user *buf,
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if (!is_present(dev))
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return -EIO;
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- if (dev->owner && dev->owner != fp)
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+ if (dev->owner && (!dev->reading || dev->owner != fp))
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return -EBUSY;
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dev->owner = fp;
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if (!is_streaming(dev)) {
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@@ -662,6 +662,7 @@ static ssize_t stk_read(struct file *fp, char __user *buf,
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|| stk_allocate_buffers(dev, 3)
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|| stk_start_stream(dev))
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return -ENOMEM;
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+ dev->reading = 1;
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spin_lock_irqsave(&dev->spinlock, flags);
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for (i = 0; i < dev->n_sbufs; i++) {
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list_add_tail(&dev->sio_bufs[i].list, &dev->sio_avail);
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