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-rw-r--r--drivers/comedi/drivers/comedi_8254.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/comedi/drivers/comedi_8254.c b/drivers/comedi/drivers/comedi_8254.c
index 696596944506..6beca2a6d66e 100644
--- a/drivers/comedi/drivers/comedi_8254.c
+++ b/drivers/comedi/drivers/comedi_8254.c
@@ -122,6 +122,8 @@
#include <linux/comedi/comedidev.h>
#include <linux/comedi/comedi_8254.h>
+#ifdef CONFIG_HAS_IOPORT
+
static unsigned int i8254_io8_cb(struct comedi_8254 *i8254, int dir,
unsigned int reg, unsigned int val)
{
@@ -164,6 +166,8 @@ static unsigned int i8254_io32_cb(struct comedi_8254 *i8254, int dir,
}
}
+#endif /* CONFIG_HAS_IOPORT */
+
static unsigned int i8254_mmio8_cb(struct comedi_8254 *i8254, int dir,
unsigned int reg, unsigned int val)
{
@@ -648,6 +652,8 @@ static struct comedi_8254 *__i8254_init(comedi_8254_iocb_fn *iocb,
return i8254;
}
+#ifdef CONFIG_HAS_IOPORT
+
/**
* comedi_8254_io_alloc - allocate and initialize the 8254 device for pio access
* @iobase: port I/O base address
@@ -682,6 +688,8 @@ struct comedi_8254 *comedi_8254_io_alloc(unsigned long iobase,
}
EXPORT_SYMBOL_GPL(comedi_8254_io_alloc);
+#endif /* CONFIG_HAS_IOPORT */
+
/**
* comedi_8254_mm_alloc - allocate and initialize the 8254 device for mmio access
* @mmio: memory mapped I/O base address