linux-kernel - [PATCH] tile: provide default ioremap declaration

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Date:   Wed, 24 May 2017 16:02:07 -0600
From:   Logan Gunthorpe <logang@...tatee.com>
To:     linux-kernel@...r.kernel.org
Cc:     Logan Gunthorpe <logang@...tatee.com>,
        Stephen Bates <sbates@...thlin.com>,
        Chris Metcalf <cmetcalf@...lanox.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Michal Hocko <mhocko@...e.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Vlastimil Babka <vbabka@...e.cz>
Subject: [PATCH] tile: provide default ioremap declaration

Add a default ioremap function which was not provided in all
circumstances. (Only when CONFIG_PCI and CONFIG_TILEGX was set).

I have designs to use them in scatterlist.c where they'd likely never
be called with this architecture, but it is needed to compile.

Signed-off-by: Logan Gunthorpe <logang@...tatee.com>
Signed-off-by: Stephen Bates <sbates@...thlin.com>
Cc: Chris Metcalf <cmetcalf@...lanox.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Mel Gorman <mgorman@...hsingularity.net>
Cc: Michal Hocko <mhocko@...e.com>
Cc: Johannes Weiner <hannes@...xchg.org>
Cc: Vlastimil Babka <vbabka@...e.cz>
---
 arch/tile/mm/pgtable.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/tile/mm/pgtable.c b/arch/tile/mm/pgtable.c
index 492a736..c61df18 100644
--- a/arch/tile/mm/pgtable.c
+++ b/arch/tile/mm/pgtable.c
@@ -503,6 +503,19 @@ void __iomem *ioremap_prot(resource_size_t phys_addr, unsigned long size,
 }
 EXPORT_SYMBOL(ioremap_prot);
 
+#if !defined(CONFIG_PCI) || !defined(CONFIG_TILEGX)
+/* ioremap is conditionally declared in pci_gx.c */
+
+void __iomem *ioremap(resource_size_t phys_addr, unsigned long size)
+{
+	pgprot_t pgprot = {};
+
+	return ioremap_prot(phys_addr, size, pgprot);
+}
+EXPORT_SYMBOL(ioremap);
+
+#endif
+
 /* Unmap an MMIO VA mapping. */
 void iounmap(volatile void __iomem *addr_in)
 {
-- 
2.1.4