From: Niklas Schnelle <schnelle@linux.ibm.com>
Date: Mon, 10 May 2021 14:52:32 +0000 (+0200)
Subject: sparc: explicitly set PCI_IOBASE to 0
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=a5f7166b58cda2430123eb9bb96d60340e699ae4;p=users%2Fjedix%2Flinux-maple.git

sparc: explicitly set PCI_IOBASE to 0

Instead of relying on the fallback in asm-generic/io.h which sets
PCI_IOBASE 0 if it is not defined set it explicitly.

Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Link: https://lore.kernel.org/lkml/CAK8P3a3PK9zyeP4ymELtc2ZYnymECoACiigw9Za+pvSJpCk5=g@mail.gmail.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---

diff --git a/arch/sparc/include/asm/io.h b/arch/sparc/include/asm/io.h
index 2eefa526b38f0..c019e50702c11 100644
--- a/arch/sparc/include/asm/io.h
+++ b/arch/sparc/include/asm/io.h
@@ -1,6 +1,14 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef ___ASM_SPARC_IO_H
 #define ___ASM_SPARC_IO_H
+
+/*
+ * On LEON PCI addresses below 64k are converted to IO accesses.
+ * io_remap_xxx() returns a kernel virtual address in the PCI window so
+ * inb() doesn't need to add an offset.
+ */
+#define PCI_IOBASE ((void __iomem *)0)
+
 #if defined(__sparc__) && defined(__arch64__)
 #include <asm/io_64.h>
 #else