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authorStefan Haberland <stefan.haberland@de.ibm.com>2008-02-05 16:50:46 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-02-05 16:50:59 +0100
commit6c5f57c7884a7e0806ae9af86de243321cab4953 (patch)
tree40794edbe388da6e9da03ce42ec13e520914a022 /drivers/s390/block/dasd.c
parenta3afe70b83fdbbd4d757d2911900d168bc798a31 (diff)
[S390] dasd: add ifcc handling
Adding interface control check (ifcc) handling in error recovery. First retry up to 255 times and if all retries fail try an alternate path if possible. Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/block/dasd.c')
-rw-r--r--drivers/s390/block/dasd.c17
1 files changed, 6 insertions, 11 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index d640427c74c..ab4f64c4982 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1057,12 +1057,11 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
if (device->features & DASD_FEATURE_ERPLOG) {
dasd_log_sense(cqr, irb);
}
- /* If we have no sense data, or we just don't want complex ERP
- * for this request, but if we have retries left, then just
- * reset this request and retry it in the fastpath
+ /*
+ * If we don't want complex ERP for this request, then just
+ * reset this and retry it in the fastpath
*/
- if (!(cqr->irb.esw.esw0.erw.cons &&
- test_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags)) &&
+ if (!test_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags) &&
cqr->retries > 0) {
DEV_MESSAGE(KERN_DEBUG, device,
"default ERP in fastpath (%i retries left)",
@@ -1742,12 +1741,8 @@ restart:
/* Process requests that may be recovered */
if (cqr->status == DASD_CQR_NEED_ERP) {
- if (cqr->irb.esw.esw0.erw.cons &&
- test_bit(DASD_CQR_FLAGS_USE_ERP,
- &cqr->flags)) {
- erp_fn = base->discipline->erp_action(cqr);
- erp_fn(cqr);
- }
+ erp_fn = base->discipline->erp_action(cqr);
+ erp_fn(cqr);
goto restart;
}