[SCSI] zfcp: fix compile warning

Get rid of this one:

drivers/s390/scsi/zfcp_erp.c: In function 'zfcp_erp_thread':
drivers/s390/scsi/zfcp_erp.c:1400: warning: ignoring return value of
'down_interruptible', declared with attribute warn_unused_result

zfcp_erp_thread is a kernel thread which can't receive any signals.
So introduce a dummy variable and get rid of the warning.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 4ed4950..495a4a3 100644 (file)
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -1385,6 +1385,7 @@ static int zfcp_erp_thread(void *data)
        struct list_head *next;
        struct zfcp_erp_action *act;
        unsigned long flags;
+       int ignore;
 
        daemonize("zfcperp%s", dev_name(&adapter->ccw_device->dev));
        /* Block all signals */
@@ -1407,7 +1408,7 @@ static int zfcp_erp_thread(void *data)
                }
 
                zfcp_rec_dbf_event_thread_lock(4, adapter);
-               down_interruptible(&adapter->erp_ready_sem);
+               ignore = down_interruptible(&adapter->erp_ready_sem);
                zfcp_rec_dbf_event_thread_lock(5, adapter);
        }