[PATCH] media: fsl-viu: Use proper check for presence of {out, in}_be32()

From: Fabio Estevam <festevam@gmail.com>
To: mchehab@kernel.org
Cc: hverkuil@xs4all.nl, paulus@samba.org,
	Fabio Estevam <festevam@gmail.com>,
	geert@linux-m68k.org, linuxppc-dev@lists.ozlabs.org,
	linux-media@vger.kernel.org
Subject: [PATCH] media: fsl-viu: Use proper check for presence of {out, in}_be32()
Date: Thu, 19 Nov 2020 21:15:09 -0300	[thread overview]
Message-ID: <20201120001509.15155-1-festevam@gmail.com> (raw)

From: Geert Uytterhoeven <geert@linux-m68k.org>

When compile-testing on m68k or microblaze:

    drivers/media/platform/fsl-viu.c:41:1: warning: "out_be32" redefined
    drivers/media/platform/fsl-viu.c:42:1: warning: "in_be32" redefined

Fix this by replacing the check for PowerPC by checks for the presence
of {out,in}_be32().

As PowerPC implements the be32 accessors using inline functions instead
of macros, identity definions are added for all accessors to make the
above checks work.

Fixes: 29d750686331a1a9 ("media: fsl-viu: allow building it with COMPILE_TEST")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
[fabio: adapt to mainline]
Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
 arch/powerpc/include/asm/io.h    | 14 ++++++++++++++
 drivers/media/platform/fsl-viu.c |  5 +++--
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 58635960403c..fcb250db110d 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -194,6 +194,20 @@ static inline void out_be64(volatile u64 __iomem *addr, u64 val)
 #endif
 #endif /* __powerpc64__ */
 
+#define in_be16 in_be16
+#define in_be32 in_be32
+#define in_be64 in_be64
+#define in_le16 in_le16
+#define in_le32 in_le32
+#define in_le64 in_le64
+
+#define out_be16 out_be16
+#define out_be32 out_be32
+#define out_be64 out_be64
+#define out_le16 out_le16
+#define out_le32 out_le32
+#define out_le64 out_le64
+
 /*
  * Low level IO stream instructions are defined out of line for now
  */
diff --git a/drivers/media/platform/fsl-viu.c b/drivers/media/platform/fsl-viu.c
index 4f2a0f992905..bb6c291ed6dc 100644
--- a/drivers/media/platform/fsl-viu.c
+++ b/drivers/media/platform/fsl-viu.c
@@ -31,9 +31,10 @@
 #define DRV_NAME		"fsl_viu"
 #define VIU_VERSION		"0.5.1"
 
-/* Allow building this driver with COMPILE_TEST */
-#if !defined(CONFIG_PPC) && !defined(CONFIG_MICROBLAZE) && !defined(CONFIG_M68K)
+#ifndef out_be32
 #define out_be32(v, a)	iowrite32be(a, (void __iomem *)v)
+#endif
+#ifndef in_be32
 #define in_be32(a)	ioread32be((void __iomem *)a)
 #endif
 
-- 
2.17.1

