From 92636b152f3b58e459988934f689619af9e04dbc Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Fri, 12 Jun 2009 10:26:37 +0200 Subject: [S390] dasd: check_characteristics cleanup Fix a broken memset (sizeof pointer vs sizeof the underlying structure) by cleaning up the involved functions. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- drivers/s390/block/dasd_int.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/s390/block/dasd_int.h') diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index c1e487f774c6..3ab69b5a41f6 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -578,7 +578,7 @@ int dasd_generic_set_offline (struct ccw_device *cdev); int dasd_generic_notify(struct ccw_device *, int); void dasd_generic_handle_state_change(struct dasd_device *); -int dasd_generic_read_dev_chars(struct dasd_device *, char *, void **, int); +int dasd_generic_read_dev_chars(struct dasd_device *, char *, void *, int); char *dasd_get_sense(struct irb *); /* externals in dasd_devmap.c */ -- cgit v1.2.3 From 6cc7f168954fe8b3d8988a90b2478a9c11c5ebcb Mon Sep 17 00:00:00 2001 From: Stefan Weinhuber Date: Fri, 12 Jun 2009 10:26:39 +0200 Subject: [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 Signed-off-by: Martin Schwidefsky --- drivers/s390/block/dasd.c | 30 ++++++++++++++++++++++++------ drivers/s390/block/dasd_diag.c | 1 + drivers/s390/block/dasd_eckd.c | 8 +++++--- drivers/s390/block/dasd_int.h | 1 + 4 files changed, 31 insertions(+), 9 deletions(-) (limited to 'drivers/s390/block/dasd_int.h') diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 35f43bea5d07..442bb98a2821 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -851,8 +851,10 @@ int dasd_start_IO(struct dasd_ccw_req *cqr) /* Check the cqr */ rc = dasd_check_cqr(cqr); - if (rc) + if (rc) { + cqr->intrc = rc; return rc; + } device = (struct dasd_device *) cqr->startdev; if (cqr->retries < 0) { /* internal error 14 - start_IO run out of retries */ @@ -915,6 +917,7 @@ int dasd_start_IO(struct dasd_ccw_req *cqr) BUG(); break; } + cqr->intrc = rc; return rc; } @@ -1454,8 +1457,12 @@ int dasd_sleep_on(struct dasd_ccw_req *cqr) dasd_add_request_tail(cqr); wait_event(generic_waitq, _wait_for_wakeup(cqr)); - /* Request status is either done or failed. */ - rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO; + if (cqr->status == DASD_CQR_DONE) + rc = 0; + else if (cqr->intrc) + rc = cqr->intrc; + else + rc = -EIO; return rc; } @@ -1477,8 +1484,15 @@ int dasd_sleep_on_interruptible(struct dasd_ccw_req *cqr) dasd_cancel_req(cqr); /* wait (non-interruptible) for final status */ wait_event(generic_waitq, _wait_for_wakeup(cqr)); + cqr->intrc = rc; } - rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO; + + if (cqr->status == DASD_CQR_DONE) + rc = 0; + else if (cqr->intrc) + rc = cqr->intrc; + else + rc = -EIO; return rc; } @@ -1523,8 +1537,12 @@ int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr) wait_event(generic_waitq, _wait_for_wakeup(cqr)); - /* Request status is either done or failed. */ - rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO; + if (cqr->status == DASD_CQR_DONE) + rc = 0; + else if (cqr->intrc) + rc = cqr->intrc; + else + rc = -EIO; return rc; } diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c index 2efaddfae560..644086ba2ede 100644 --- a/drivers/s390/block/dasd_diag.c +++ b/drivers/s390/block/dasd_diag.c @@ -202,6 +202,7 @@ dasd_start_diag(struct dasd_ccw_req * cqr) rc = -EIO; break; } + cqr->intrc = rc; return rc; } diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 216c09bcd222..cf0cfdba1244 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -3017,8 +3017,9 @@ static void dasd_eckd_dump_sense_ccw(struct dasd_device *device, " I/O status report for device %s:\n", dev_name(&device->cdev->dev)); len += sprintf(page + len, KERN_ERR PRINTK_HEADER - " in req: %p CS: 0x%02X DS: 0x%02X\n", req, - scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw)); + " in req: %p CS: 0x%02X DS: 0x%02X CC: 0x%02X RC: %d\n", + req, scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw), + scsw_cc(&irb->scsw), req->intrc); len += sprintf(page + len, KERN_ERR PRINTK_HEADER " device %s: Failing CCW: %p\n", dev_name(&device->cdev->dev), @@ -3119,9 +3120,10 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device, " I/O status report for device %s:\n", dev_name(&device->cdev->dev)); len += sprintf(page + len, KERN_ERR PRINTK_HEADER - " in req: %p CS: 0x%02X DS: 0x%02X " + " in req: %p CS: 0x%02X DS: 0x%02X CC: 0x%02X RC: %d " "fcxs: 0x%02X schxs: 0x%02X\n", req, scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw), + scsw_cc(&irb->scsw), req->intrc, irb->scsw.tm.fcxs, irb->scsw.tm.schxs); len += sprintf(page + len, KERN_ERR PRINTK_HEADER " device %s: Failing TCW: %p\n", diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index 3ab69b5a41f6..f97ceb795078 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 */ -- cgit v1.2.3