PCI: dwc: Use the bitmap API to allocate bitmaps

Use devm_bitmap_zalloc() instead of hand-writing them.

It is less verbose and it improves the semantic.

Link: https://lore.kernel.org/r/bc6586a603abc0db7d4531308b698fbe7a6d7083.1657375829.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index 627c4b6..cf16276 100644 (file)
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -715,17 +715,13 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep)
 
        dw_pcie_iatu_detect(pci);
 
-       ep->ib_window_map = devm_kcalloc(dev,
-                                        BITS_TO_LONGS(pci->num_ib_windows),
-                                        sizeof(long),
-                                        GFP_KERNEL);
+       ep->ib_window_map = devm_bitmap_zalloc(dev, pci->num_ib_windows,
+                                              GFP_KERNEL);
        if (!ep->ib_window_map)
                return -ENOMEM;
 
-       ep->ob_window_map = devm_kcalloc(dev,
-                                        BITS_TO_LONGS(pci->num_ob_windows),
-                                        sizeof(long),
-                                        GFP_KERNEL);
+       ep->ob_window_map = devm_bitmap_zalloc(dev, pci->num_ob_windows,
+                                              GFP_KERNEL);
        if (!ep->ob_window_map)
                return -ENOMEM;