linux-kernel - [PATCH v2 01/27] staging: unisys: visorbus change -1 return values

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Message-ID: <1464748013-31309-2-git-send-email-david.kershner@unisys.com>
Date:	Tue, 31 May 2016 22:26:27 -0400
From:	David Kershner <david.kershner@...sys.com>
To:	<corbet@....net>, <tglx@...utronix.de>, <mingo@...hat.com>,
	<hpa@...or.com>, <david.kershner@...sys.com>,
	<gregkh@...uxfoundation.org>, <erik.arfvidson@...sys.com>,
	<timothy.sell@...sys.com>, <hofrat@...dl.org>,
	<dzickus@...hat.com>, <jes.sorensen@...hat.com>,
	<alexander.curtin@...sys.com>, <janani.rvchndrn@...il.com>,
	<sudipm.mukherjee@...il.com>, <prarit@...hat.com>,
	<david.binder@...sys.com>, <nhorman@...hat.com>,
	<dan.j.williams@...el.com>, <linux-kernel@...r.kernel.org>,
	<linux-doc@...r.kernel.org>,
	<driverdev-devel@...uxdriverproject.org>,
	<sparmaintainer@...sys.com>
Subject: [PATCH v2 01/27] staging: unisys: visorbus change -1 return values

From: Erik Arfvidson <erik.arfvidson@...sys.com>

This patch changes the vague -1 return values to -EFAULT since
it would be the most appropriate, given that this error
would only occur in an unexpected bad offset field.
Resulting in a bad address.

Signed-off-by: Erik Arfvidson <erik.arfvidson@...sys.com>
Signed-off-by: David Kershner <david.kershner@...sys.com>
Reviewed-by: Tim Sell <Timothy.Sell@...sys.com>
---
 drivers/staging/unisys/visorbus/visorbus_main.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/unisys/visorbus/visorbus_main.c b/drivers/staging/unisys/visorbus/visorbus_main.c
index 3a147db..d32b898 100644
--- a/drivers/staging/unisys/visorbus/visorbus_main.c
+++ b/drivers/staging/unisys/visorbus/visorbus_main.c
@@ -876,10 +876,10 @@ write_vbus_chp_info(struct visorchannel *chan,
 	int off = sizeof(struct channel_header) + hdr_info->chp_info_offset;
 
 	if (hdr_info->chp_info_offset == 0)
-		return -1;
+		return -EFAULT;
 
 	if (visorchannel_write(chan, off, info, sizeof(*info)) < 0)
-		return -1;
+		return -EFAULT;
 	return 0;
 }
 
@@ -895,10 +895,10 @@ write_vbus_bus_info(struct visorchannel *chan,
 	int off = sizeof(struct channel_header) + hdr_info->bus_info_offset;
 
 	if (hdr_info->bus_info_offset == 0)
-		return -1;
+		return -EFAULT;
 
 	if (visorchannel_write(chan, off, info, sizeof(*info)) < 0)
-		return -1;
+		return -EFAULT;
 	return 0;
 }
 
@@ -915,10 +915,10 @@ write_vbus_dev_info(struct visorchannel *chan,
 	    (hdr_info->device_info_struct_bytes * devix);
 
 	if (hdr_info->dev_info_offset == 0)
-		return -1;
+		return -EFAULT;
 
 	if (visorchannel_write(chan, off, info, sizeof(*info)) < 0)
-		return -1;
+		return -EFAULT;
 	return 0;
 }
 
-- 
1.9.1