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authorCornelia Huck <cornelia.huck@de.ibm.com>2008-01-26 14:10:40 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-01-26 14:10:57 +0100
commit98c13c283a4e8b7f844f1f470abd7c756248fcc4 (patch)
treed48ed417849c6dbe938c7e18d93066ec66fb129a /drivers/s390/cio/css.c
parent602b20f2bf335d0d5fce11cb2ade22aa74e7ba25 (diff)
[S390] cio: Reset sch->driver.
sch->driver needs to be reset to NULL on failed probe and after remove. We also need to check for sch->driver on shutdown. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/css.c')
-rw-r--r--drivers/s390/cio/css.c22
1 files changed, 13 insertions, 9 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 614cc694184e..f558686a66dd 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -796,32 +796,36 @@ css_bus_match (struct device *dev, struct device_driver *drv)
return 0;
}
-static int
-css_probe (struct device *dev)
+static int css_probe(struct device *dev)
{
struct subchannel *sch;
+ int ret;
sch = to_subchannel(dev);
sch->driver = to_cssdriver(dev->driver);
- return (sch->driver->probe ? sch->driver->probe(sch) : 0);
+ ret = sch->driver->probe ? sch->driver->probe(sch) : 0;
+ if (ret)
+ sch->driver = NULL;
+ return ret;
}
-static int
-css_remove (struct device *dev)
+static int css_remove(struct device *dev)
{
struct subchannel *sch;
+ int ret;
sch = to_subchannel(dev);
- return (sch->driver->remove ? sch->driver->remove(sch) : 0);
+ ret = sch->driver->remove ? sch->driver->remove(sch) : 0;
+ sch->driver = NULL;
+ return ret;
}
-static void
-css_shutdown (struct device *dev)
+static void css_shutdown(struct device *dev)
{
struct subchannel *sch;
sch = to_subchannel(dev);
- if (sch->driver->shutdown)
+ if (sch->driver && sch->driver->shutdown)
sch->driver->shutdown(sch);
}