redonkable/alistair23-linux
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[S390] cio: ccw group online store - report rcs to the caller.

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In case the ccw group driver refuses to set a device [on|off]line,
we should transmit the return code to the caller.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2009-03-26 15:24:13 +01:00 committed by Martin Schwidefsky
parent a1f640734a
commit 40c9f9992b
1 changed files with 8 additions and 7 deletions
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15
drivers/s390/cio/ccwgroup.c
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@ -391,27 +391,28 @@ ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const
unsigned long value;
int ret;
gdev = to_ccwgroupdev(dev);
if (!dev->driver)
return count;
return -ENODEV;
gdev = to_ccwgroupdev(dev);
gdrv = to_ccwgroupdrv(dev->driver);
gdrv = to_ccwgroupdrv (gdev->dev.driver);
if (!try_module_get(gdrv->owner))
return -EINVAL;
ret = strict_strtoul(buf, 0, &value);
if (ret)
goto out;
ret = count;
if (value == 1)
ccwgroup_set_online(gdev);
ret = ccwgroup_set_online(gdev);
else if (value == 0)
ccwgroup_set_offline(gdev);
ret = ccwgroup_set_offline(gdev);
else
ret = -EINVAL;
out:
module_put(gdrv->owner);
return ret;
return (ret == 0) ? count : ret;
}
static ssize_t