linux-kernel - [RFC PATCH 05/16] tile: provide default ioremap declaration

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Date:   Wed, 24 May 2017 15:42:16 -0600
From:   Logan Gunthorpe <logang@...tatee.com>
To:     linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        linux-nvdimm@...ts.01.org, linux-nvme@...ts.infradead.org,
        linux-rdma@...r.kernel.org
Cc:     Christoph Hellwig <hch@....de>,
        Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
        Jens Axboe <axboe@...nel.dk>,
        Dan Williams <dan.j.williams@...el.com>,
        Ross Zwisler <ross.zwisler@...ux.intel.com>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Ming Lei <ming.lei@...onical.com>,
        Johannes Berg <johannes.berg@...el.com>,
        Stephen Bates <sbates@...thlin.com>,
        Sagi Grimberg <sagi@...mberg.me>,
        Keith Busch <keith.busch@...el.com>,
        Christian König <christian.koenig@....com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Jerome Glisse <jglisse@...hat.com>,
        Logan Gunthorpe <logang@...tatee.com>
Subject: [RFC PATCH 05/16] 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>
---
 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