[PATCH] s390/cio: Remove the invalid condition on IO_SCH_UNREG

[Vineeth Vijayan <vneethv@linux.ibm.com>]

The condition to check the cdev pointer validity on
css_sch_device_unregister() is a leftover from the 'commit c97cd8c81d4a
("s390/cio: Remove pm support from ccw bus driver")'. This could lead to a
situation, where detaching the disk is not happening completely. Remove
this invalid condition in the IO_SCH_UNREG case.

Fixes: 8cc0dcfdc1c0 ("s390/cio: remove pm support from ccw bus driver")
Reported-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Suggested-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com>
---
 drivers/s390/cio/device.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 3f026021e95e..84f659cafe76 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1532,8 +1532,7 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process)
 	switch (action) {
 	case IO_SCH_ORPH_UNREG:
 	case IO_SCH_UNREG:
-		if (!cdev)
-			css_sch_device_unregister(sch);
+		css_sch_device_unregister(sch);
 		break;
 	case IO_SCH_ORPH_ATTACH:
 	case IO_SCH_UNREG_ATTACH:
-- 
2.25.1