diff options
Diffstat (limited to 'drivers/nvme/host/pci.c')
| -rw-r--r-- | drivers/nvme/host/pci.c | 34 |
1 files changed, 13 insertions, 21 deletions
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 87ad57bc..a64d0ba 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -1559,23 +1559,6 @@ static void nvme_create_io_queues(struct nvme_dev *dev) } } -static int set_queue_count(struct nvme_dev *dev, int count) -{ - int status; - u32 result; - u32 q_count = (count - 1) | ((count - 1) << 16); - - status = nvme_set_features(&dev->ctrl, NVME_FEAT_NUM_QUEUES, q_count, 0, - &result); - if (status < 0) - return status; - if (status > 0) { - dev_err(dev->dev, "Could not set queue count (%d)\n", status); - return 0; - } - return min(result & 0xffff, result >> 16) + 1; -} - static void __iomem *nvme_map_cmb(struct nvme_dev *dev) { u64 szu, size, offset; @@ -1640,11 +1623,20 @@ static int nvme_setup_io_queues(struct nvme_dev *dev) int result, i, vecs, nr_io_queues, size; nr_io_queues = num_possible_cpus(); - result = set_queue_count(dev, nr_io_queues); - if (result <= 0) + result = nvme_set_queue_count(&dev->ctrl, &nr_io_queues); + if (result < 0) return result; - if (result < nr_io_queues) - nr_io_queues = result; + + /* + * Degraded controllers might return an error when setting the queue + * count. We still want to be able to bring them online and offer + * access to the admin queue, as that might be only way to fix them up. + */ + if (result > 0) { + dev_err(dev->dev, "Could not set queue count (%d)\n", result); + nr_io_queues = 0; + result = 0; + } if (dev->cmb && NVME_CMB_SQS(dev->cmbsz)) { result = nvme_cmb_qdepth(dev, nr_io_queues, |
