[S390] dasd: forward internal errors to dasd_sleep_on caller

If a DASD requests is started with dasd_sleep_on and fails, then the
calling function may need to know the reason for the failure.
In cases of hardware errors it can inspect the sense data in the irb,
but when the reason is internal (e.g. start_IO failed) then it needs
a meaningfull return code.

Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 3ab69b5a41f..f97ceb79507 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -173,6 +173,7 @@ struct dasd_ccw_req {
         void *data;                     /* pointer to data area */
 
         /* these are important for recovering erroneous requests          */
+        int intrc;                      /* internal error, e.g. from start_IO */
         struct irb irb;                 /* device status in case of an error */
         struct dasd_ccw_req *refers;    /* ERP-chain queueing. */
         void *function;                 /* originating ERP action */