[S390] cio: handle ssch() return codes correctly.

ssch() has two classes of return codes:
- condition codes (0-3) which need to be translated to Linux
  error codes
- Linux error codes (-EIO on exceptions) which should be passed
  to the caller (instead of erronously being handled like
  condition code 3)

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 33bff8fec7d10b0a5b02cb0ed0824cdd210b2256..5954b905e3cab9723116646069356ad7928c31d8 100644 (file)
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -208,8 +208,10 @@ cio_start_key (struct subchannel *sch,     /* subchannel structure */
        case 1:         /* status pending */
        case 2:         /* busy */
                return -EBUSY;
-       default:                /* device/path not operational */
+       case 3:         /* device/path not operational */
                return cio_start_handle_notoper(sch, lpm);
+       default:
+               return ccode;
        }
 }