linux-kernel - [PATCH 4.2 025/110] ALSA: hdac: Explicitly add io.h

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Date:	Fri,  6 Nov 2015 11:18:32 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, kbuild test robot <lkp@...el.com>,
	Mark Brown <broonie@...nel.org>,
	Vinod Koul <vinod.koul@...el.com>, Takashi Iwai <tiwai@...e.de>
Subject: [PATCH 4.2 025/110] ALSA: hdac: Explicitly add io.h

4.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vinod Koul <vinod.koul@...el.com>

commit 42f2bb1c494543084b764e1ca253c73db910daf2 upstream.

Compiling the hdac extended core on arm fails with below error:

  sound/hda/ext/hdac_ext_bus.c: In function 'hdac_ext_writel':
>> sound/hda/ext/hdac_ext_bus.c:29:2: error: implicit declaration of
>> function
+'writel' [-Werror=implicit-function-declaration]
     writel(value, addr);
     ^
   sound/hda/ext/hdac_ext_bus.c: In function 'hdac_ext_readl':
>> sound/hda/ext/hdac_ext_bus.c:34:2: error: implicit declaration of
>> function
+'readl' [-Werror=implicit-function-declaration]
     return readl(addr);

This is fixed by explicitly including io.h

Fixes: 99463b3a3994 - ('ALSA: hda: provide default bus io ops extended hdac')
Reported-by: kbuild test robot <lkp@...el.com>
Suggested-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Vinod Koul <vinod.koul@...el.com>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/hda/ext/hdac_ext_bus.c |    1 +
 1 file changed, 1 insertion(+)

--- a/sound/hda/ext/hdac_ext_bus.c
+++ b/sound/hda/ext/hdac_ext_bus.c
@@ -19,6 +19,7 @@
 
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/io.h>
 #include <sound/hdaudio_ext.h>
 
 MODULE_DESCRIPTION("HDA extended core");


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