staging: unisys: visorbus change -1 return values

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@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/unisys/visorbus/visorbus_main.c b/drivers/staging/unisys/visorbus/visorbus_main.c
index 3a147db..d32b898 100644 (file)
--- 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;
 }