From: Eli Billauer <eli.billauer@gmail.com>
Date: Tue, 17 Dec 2013 19:36:29 +0000 (+0200)
Subject: staging: xillybus: Return -EIO if *_iomap fails, instead of 0
X-Git-Tag: firefly_0821_release~176^2~4489^2~254
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9340e9dc9d000781a396917d3ca8e5a705cae765;p=firefly-linux-kernel-4.4.55.git

staging: xillybus: Return -EIO if *_iomap fails, instead of 0

This patch replicates the correction made by Wei Yongjun on a second
occurrence of the same bug.

The first correction was in commit 8eec4555511bfa1f8a2e0a2de45c988fd30c3efb.

Bug fixed: The error code was not set, so the error condition wasn't reflected
in the return value.

Reported-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Eli Billauer <eli.billauer@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/xillybus/xillybus_of.c b/drivers/staging/xillybus/xillybus_of.c
index 394bfea1af6e..3b25b0e100b4 100644
--- a/drivers/staging/xillybus/xillybus_of.c
+++ b/drivers/staging/xillybus/xillybus_of.c
@@ -131,10 +131,10 @@ static int xilly_drv_probe(struct platform_device *op)
 	}
 
 	endpoint->registers = of_iomap(dev->of_node, 0);
-
 	if (!endpoint->registers) {
 		dev_err(endpoint->dev,
 			"Failed to map I/O memory. Aborting.\n");
+		rc = -EIO;
 		goto failed_iomap0;
 	}