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

From: Greg Kroah-Hartman
Date: Fri Nov 06 2015 - 15:48:00 EST

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


From: Vinod Koul <vinod.koul@xxxxxxxxx>

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@xxxxxxxxx>
Suggested-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Vinod Koul <vinod.koul@xxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

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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