NVMe: Use pci_(request|release)_mem_regions

Now that we do have pci_request_mem_regions() and pci_release_mem_regions()
at hand, use it in the NVMe driver.

Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
CC: Keith Busch <keith.busch@intel.com>
CC: Jens Axboe <axboe@fb.com>

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 78dca31..7e4d812 100644 (file)
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1681,7 +1681,7 @@ static void nvme_dev_unmap(struct nvme_dev *dev)
 {
        if (dev->bar)
                iounmap(dev->bar);
-       pci_release_regions(to_pci_dev(dev->dev));
+       pci_release_mem_regions(to_pci_dev(dev->dev));
 }
 
 static void nvme_pci_disable(struct nvme_dev *dev)
@@ -1909,13 +1909,9 @@ static const struct nvme_ctrl_ops nvme_pci_ctrl_ops = {
 
 static int nvme_dev_map(struct nvme_dev *dev)
 {
-       int bars;
        struct pci_dev *pdev = to_pci_dev(dev->dev);
 
-       bars = pci_select_bars(pdev, IORESOURCE_MEM);
-       if (!bars)
-               return -ENODEV;
-       if (pci_request_selected_regions(pdev, bars, "nvme"))
+       if (pci_request_mem_regions(pdev, "nvme"))
                return -ENODEV;
 
        dev->bar = ioremap(pci_resource_start(pdev, 0), 8192);
@@ -1924,7 +1920,7 @@ static int nvme_dev_map(struct nvme_dev *dev)
 
        return 0;
   release:
-       pci_release_regions(pdev);
+       pci_release_mem_regions(pdev);
        return -ENODEV;
 }