From: Peter Hurley <peter@hurleysoftware.com>
To: Rob Herring <robh@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Fengguang Wu <fengguang.wu@intel.com>,
linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
Peter Hurley <peter@hurleysoftware.com>,
Kevin Cernekee <cernekee@gmail.com>
Subject: [PATCH] m32r: Add ioreadXX/iowriteXX big-endian mmio accessors
Date: Wed, 8 Jul 2015 23:10:06 -0400 [thread overview]
Message-ID: <1436411406-6466-1-git-send-email-peter@hurleysoftware.com> (raw)
commit c627f2ceb692 ("serial: 8250: Add support for big-endian MMIO accesses")
added support for 32-bit big-endian mmio to the 8250 driver. Support for
ioreadXXbe/iowriteXXbe io accessors was missing from m32r arch, which caused
build errors.
Add trivial macro mmio accessors.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
arch/m32r/include/asm/io.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/m32r/include/asm/io.h b/arch/m32r/include/asm/io.h
index 9cc00db..d7a034d 100644
--- a/arch/m32r/include/asm/io.h
+++ b/arch/m32r/include/asm/io.h
@@ -173,6 +173,11 @@ static inline void _writel(unsigned long l, unsigned long addr)
#define iowrite16 writew
#define iowrite32 writel
+#define ioread16be(addr) be16_to_cpu(readw(addr))
+#define ioread32be(addr) be32_to_cpu(readl(addr))
+#define iowrite16be(v, addr) writew(cpu_to_be16(v), (addr))
+#define iowrite32be(v, addr) writel(cpu_to_be32(v), (addr))
+
#define mmiowb()
#define flush_write_buffers() do { } while (0) /* M32R_FIXME */
--
2.4.5
reply other threads:[~2015-07-09 3:10 UTC|newest]
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