linux-kernel - [PATCH] PCI: dwc: Use the bitmap API to allocate bitmaps

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Date:   Sat,  9 Jul 2022 16:10:52 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Jingoo Han <jingoohan1@...il.com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-pci@...r.kernel.org
Subject: [PATCH] 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.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/pci/controller/dwc/pcie-designware-ep.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index fb887495f53e..ad54aaa71a02 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -721,17 +721,13 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep)
 	ep->phys_base = res->start;
 	ep->addr_size = resource_size(res);
 
-	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;
 
-- 
2.34.1