提交 2659e57b 编写于 作者: C Christoph Hellwig 提交者: Jens Axboe

nvme: properly handle partially initialized queues in nvme_create_io_queues

This avoids having to clean up later in a seemingly unrelated place.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NKeith Busch <keith.busch@intel.com>
Signed-off-by: NJens Axboe <axboe@fb.com>
上级 3cf519b5
......@@ -2189,6 +2189,13 @@ static void nvme_alloc_ns(struct nvme_dev *dev, unsigned nsid)
kfree(ns);
}
/*
* Create I/O queues. Failing to create an I/O queue is not an issue,
* we can continue with less than the desired amount of queues, and
* even a controller without I/O queues an still be used to issue
* admin commands. This might be useful to upgrade a buggy firmware
* for example.
*/
static void nvme_create_io_queues(struct nvme_dev *dev)
{
unsigned i;
......@@ -2198,8 +2205,10 @@ static void nvme_create_io_queues(struct nvme_dev *dev)
break;
for (i = dev->online_queues; i <= dev->queue_count - 1; i++)
if (nvme_create_queue(dev->queues[i], i))
if (nvme_create_queue(dev->queues[i], i)) {
nvme_free_queues(dev, i);
break;
}
}
static int set_queue_count(struct nvme_dev *dev, int count)
......@@ -2994,9 +3003,12 @@ static void nvme_probe_work(struct work_struct *work)
dev->event_limit = 1;
/*
* Keep the controller around but remove all namespaces if we don't have
* any working I/O queue.
*/
if (dev->online_queues < 2) {
dev_warn(dev->dev, "IO queues not created\n");
nvme_free_queues(dev, 1);
nvme_dev_remove(dev);
} else {
nvme_unfreeze_queues(dev);
......
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