4.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: Keith Busch <keith.busch@xxxxxxxxx>
commit 7065906096273b39b90a512a7170a6697ed94b23 upstream.
The driver was decrementing the online_queues prior to attempting to
delete those IO queues, so the driver ended up not requesting the
controller delete any. This patch saves the online_queues prior to
suspending them, and adds that parameter for deleting io queues.
Fixes: c21377f8 ("nvme: Suspend all queues before deletion")
Signed-off-by: Keith Busch <keith.busch@xxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/nvme/host/pci.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1531,9 +1531,9 @@ static int nvme_delete_queue(struct nvme
return 0;
}
-static void nvme_disable_io_queues(struct nvme_dev *dev)
+static void nvme_disable_io_queues(struct nvme_dev *dev, int queues)
{
- int pass, queues = dev->online_queues - 1;
+ int pass;
unsigned long timeout;
u8 opcode = nvme_admin_delete_sq;
@@ -1678,7 +1678,7 @@ static void nvme_pci_disable(struct nvme
static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown)
{
- int i;
+ int i, queues;
u32 csts = -1;
del_timer_sync(&dev->watchdog_timer);
@@ -1689,6 +1689,7 @@ static void nvme_dev_disable(struct nvme
csts = readl(dev->bar + NVME_REG_CSTS);
}
+ queues = dev->online_queues - 1;
for (i = dev->queue_count - 1; i > 0; i--)
nvme_suspend_queue(dev->queues[i]);
@@ -1700,7 +1701,7 @@ static void nvme_dev_disable(struct nvme
if (dev->queue_count)
nvme_suspend_queue(dev->queues[0]);
} else {
- nvme_disable_io_queues(dev);
+ nvme_disable_io_queues(dev, queues);
nvme_disable_admin_queue(dev, shutdown);
}
nvme_pci_disable(dev);
--
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