spi/bitbang: don't error out if there is no setup callback provided

It's perfectly valid not to have a setup callback when the probe routine
does all the needed things. So don't even check for this case and trust
the caller.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/spi/spi-bitbang.c b/drivers/spi/spi-bitbang.c
index a89178dc8498..dd2e5d7332f8 100644
--- a/drivers/spi/spi-bitbang.c
+++ b/drivers/spi/spi-bitbang.c
@@ -446,8 +446,7 @@ int spi_bitbang_start(struct spi_bitbang *bitbang)
                         master->setup = spi_bitbang_setup;
                         master->cleanup = spi_bitbang_cleanup;
                 }
-        } else if (!master->setup)
-                return -EINVAL;
+        }
 
         /* driver may get busy before register() returns, especially
          * if someone registered boardinfo for devices