L4lx: make block stub driver SMP safe (fix #514)
We have to take the block queue's spin lock before invoking the interrupt routine, otherwise the AVL tree og Genode's block packet stream gets corrupted.
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@ -141,7 +141,7 @@ genode_end_request(void *request, short write,
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blk_end_request_all(req, 0);
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__blk_end_request_all(req, 0);
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if (dev->stopped) {
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if (dev->stopped) {
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dev->stopped = 0;
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dev->stopped = 0;
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@ -173,8 +173,11 @@ static struct block_device_operations genode_blk_ops = {
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static irqreturn_t event_interrupt(int irq, void *data)
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static irqreturn_t event_interrupt(int irq, void *data)
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{
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{
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unsigned long flags;
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struct genode_blk_device *dev = (struct genode_blk_device *)data;
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struct genode_blk_device *dev = (struct genode_blk_device *)data;
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spin_lock_irqsave(dev->queue->queue_lock, flags);
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genode_block_collect_responses(dev->idx);
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genode_block_collect_responses(dev->idx);
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spin_unlock_irqrestore(dev->queue->queue_lock, flags);
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return IRQ_HANDLED;
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return IRQ_HANDLED;
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}
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}
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