From: Rui Miguel Silva <rui.silva@linaro.org>
Date: Tue, 15 Dec 2015 19:09:55 +0000 (+0000)
Subject: greybus: spi: validate spi master register
X-Git-Tag: v4.14-rc1~2366^2~378^2~21^2~920
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a92a2d46acd0bfb97ba409d9d663c270cb240715;p=platform%2Fkernel%2Flinux-rpi.git

greybus: spi: validate spi master register

Check for error in registering spi master, even though the current code
will fail a little more ahead when trying to register devices in the
master.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Reported-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
---

diff --git a/drivers/staging/greybus/spi.c b/drivers/staging/greybus/spi.c
index 41aa0ec..6e1146d 100644
--- a/drivers/staging/greybus/spi.c
+++ b/drivers/staging/greybus/spi.c
@@ -360,6 +360,8 @@ static int gb_spi_connection_init(struct gb_connection *connection)
 	master->transfer_one_message = gb_spi_transfer_one_message;
 
 	ret = spi_register_master(master);
+	if (ret < 0)
+		goto out_put_master;
 
 	/* now, fetch the devices configuration */
 	for (i = 0; i < spi->num_chipselect; i++) {