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, 1 deletions

diff --git a/drivers/spi/spi_txx9.c b/drivers/spi/spi_txx9.c
index 29cbb065618a..8e36b2153d9a 100644
--- a/drivers/spi/spi_txx9.c
+++ b/drivers/spi/spi_txx9.c
@@ -126,7 +126,7 @@ static int txx9spi_setup(struct spi_device *spi)
                         || spi->max_speed_hz < c->min_speed_hz)
                 return -EINVAL;
 
-        bits_per_word = spi->bits_per_word ? : 8;
+        bits_per_word = spi->bits_per_word;
         if (bits_per_word != 8 && bits_per_word != 16)
                 return -EINVAL;