diff --git a/configs/mcu123-lpc214x/src/up_spi.c b/configs/mcu123-lpc214x/src/up_spi.c
index 0997aa01b1e..f517939c48b 100644
--- a/configs/mcu123-lpc214x/src/up_spi.c
+++ b/configs/mcu123-lpc214x/src/up_spi.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * config/mcu123-lpc214x/src/up_spi.c
  *
- *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
  *
  * This logic emulates the Prolific PL2303 serial/USB converter
@@ -88,7 +88,7 @@
  * Private Function Prototypes
  ****************************************************************************/
 
-static void   spi_select(FAR struct spi_dev_s *dev, boolean selected);
+static void   spi_select(FAR struct spi_dev_s *dev, enum spidev_e devid, boolean selected);
 static uint32 spi_setfrequency(FAR struct spi_dev_s *dev, uint32 frequency);
 static ubyte  spi_status(FAR struct spi_dev_s *dev);
 static ubyte  spi_sndbyte(FAR struct spi_dev_s *dev, ubyte ch);
@@ -123,17 +123,21 @@ static struct spi_dev_s g_spidev = { &g_spiops };
  * Name: spi_select
  *
  * Description:
- *   Enable/disable the SPI slave select
+ *   Enable/disable the SPI slave select.   The implementation of this method
+ *   must include handshaking:  If a device is selected, it must hold off
+ *   all other attempts to select the device until the device is deselecte.
  *
  * Input Parameters:
- *   selected: TRUE: slave selected, FALSE: slave de-selected
+ *   dev -      Device-specific state data
+ *   devid -    Identifies the device to select
+ *   selected - TRUE: slave selected, FALSE: slave de-selected
  *
  * Returned Value:
  *   None
  *
  ****************************************************************************/
 
-static void spi_select(FAR struct spi_dev_s *dev, boolean selected)
+static void spi_select(FAR struct spi_dev_s *dev, enum spidev_e devid, boolean selected)
 {
   uint32 bit = 1 << 20;
 
diff --git a/configs/olimex-strp711/src/up_spi.c b/configs/olimex-strp711/src/up_spi.c
index 43a166b2abe..b30b426fd4b 100644
--- a/configs/olimex-strp711/src/up_spi.c
+++ b/configs/olimex-strp711/src/up_spi.c
@@ -265,7 +265,7 @@ static inline void   spi_putreg(FAR struct str71x_spidev_s *priv, ubyte offset,
 
 /* SPI methods */
 
-static void   spi_select(FAR struct spi_dev_s *dev, boolean selected);
+static void   spi_select(FAR struct spi_dev_s *dev, enum spidev_e devid, boolean selected);
 static uint32 spi_setfrequency(FAR struct spi_dev_s *dev, uint32 frequency);
 static ubyte  spi_status(FAR struct spi_dev_s *dev);
 static ubyte  spi_sndbyte(FAR struct spi_dev_s *dev, ubyte ch);
@@ -357,17 +357,21 @@ static inline void spi_putreg(FAR struct str71x_spidev_s *priv, ubyte offset, ui
  * Name: spi_select
  *
  * Description:
- *   Enable/disable the SPI slave select
+ *   Enable/disable the SPI slave select.  The implementation of this method
+ *   must include handshaking:  If a device is selected, it must hold off
+ *   all other attempts to select the device until the device is deselected.
  *
  * Input Parameters:
- *   selected: TRUE: slave selected, FALSE: slave de-selected
+ *   dev -      Device-specific state data
+ *   devid -    Identifies the device to select
+ *   selected - TRUE: slave selected, FALSE: slave de-selected
  *
  * Returned Value:
  *   None
  *
  ****************************************************************************/
 
-static void spi_select(FAR struct spi_dev_s *dev, boolean selected)
+static void spi_select(FAR struct spi_dev_s *dev, enum spidev_e devid, boolean selected)
 {
   FAR struct str71x_spidev_s *priv = (FAR struct str71x_spidev_s *)dev;
   uint16 reg16;