linux-kernel - [RFC 2/5] of: Move of_dma_get_range to of

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Date:   Fri, 23 Jul 2021 14:40:28 -0700
From:   Atish Patra <atish.patra@....com>
To:     linux-kernel@...r.kernel.org
Cc:     Atish Patra <atish.patra@....com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Christoph Hellwig <hch@....de>, devicetree@...r.kernel.org,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Frank Rowand <frowand.list@...il.com>,
        Guo Ren <guoren@...ux.alibaba.com>,
        iommu@...ts.linux-foundation.org, linux-riscv@...ts.infradead.org,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Rob Herring <robh+dt@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Tobias Klauser <tklauser@...tanz.ch>
Subject: [RFC 2/5] of: Move of_dma_get_range to of_address.h

Currently, of_dma_get_range is kept in of_private.h as it is used by only
OF support code.

Move it to of_address.h so that it can be used by the code outside OF
support code.

Signed-off-by: Atish Patra <atish.patra@....com>
---
 drivers/of/of_private.h    | 10 ----------
 include/linux/of_address.h | 12 ++++++++++++
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h
index 631489f7f8c0..f65f801e3aae 100644
--- a/drivers/of/of_private.h
+++ b/drivers/of/of_private.h
@@ -160,16 +160,6 @@ extern int of_bus_n_addr_cells(struct device_node *np);
 extern int of_bus_n_size_cells(struct device_node *np);
 
 struct bus_dma_region;
-#if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_HAS_DMA)
-int of_dma_get_range(struct device_node *np,
-		const struct bus_dma_region **map);
-#else
-static inline int of_dma_get_range(struct device_node *np,
-		const struct bus_dma_region **map)
-{
-	return -ENODEV;
-}
-#endif
 
 void fdt_init_reserved_mem(void);
 void fdt_reserved_mem_save_node(unsigned long node, const char *uname,
diff --git a/include/linux/of_address.h b/include/linux/of_address.h
index 45598dbec269..0e20f85850fc 100644
--- a/include/linux/of_address.h
+++ b/include/linux/of_address.h
@@ -154,4 +154,16 @@ static inline const __be32 *of_get_pci_address(struct device_node *dev, int bar_
 	return __of_get_address(dev, -1, bar_no, size, flags);
 }
 
+struct bus_dma_region;
+#if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_HAS_DMA)
+int of_dma_get_range(struct device_node *np,
+		const struct bus_dma_region **map);
+#else
+static inline int of_dma_get_range(struct device_node *np,
+		const struct bus_dma_region **map)
+{
+	return -ENODEV;
+}
+#endif
+
 #endif /* __OF_ADDRESS_H */
-- 
2.31.1