spi: move common spi_setup() functionality into core

Start moving some spi_setup() functionality into the SPI core from the
various spi_master controller drivers:

 - Make that function stop being an inline;

 - Move two common idioms from drivers into that new function:
    * Default bits_per_word to 8 if that field isn't set
    * Issue a standardized dev_dbg() message

This is a net minor source code shrink, and supports enhancments found in
some follow-up patches.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/spi/spi_imx.c b/drivers/spi/spi_imx.c
index 0671aeef5792..26d5ef06dbd9 100644
--- a/drivers/spi/spi_imx.c
+++ b/drivers/spi/spi_imx.c
@@ -1286,10 +1286,7 @@ static int setup(struct spi_device *spi)
 
         /* SPI word width */
         tmp = spi->bits_per_word;
-        if (tmp == 0) {
-                tmp = 8;
-                spi->bits_per_word = 8;
-        } else if (tmp > 16) {
+        if (tmp > 16) {
                 status = -EINVAL;
                 dev_err(&spi->dev,
                         "setup - "