From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Date: Thu, 8 Aug 2013 14:09:49 +0000 (+0200)
Subject: spi/bitbang: don't error out if there is no setup callback provided
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=52ade736215fb4421a6dc2b6900703a6fadba9e9;p=openwrt%2Fstaging%2Fblogic.git

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>
---

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