diff options
author | Martin Peschke <mp3@de.ibm.com> | 2007-05-09 13:01:20 +0400 |
---|---|---|
committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-05-16 18:01:38 +0400 |
commit | 869b2b444c58302e3233ce0b671fabf28135a37d (patch) | |
tree | 9673d7c57c1c3a44dee35a920953834badf9ff92 /drivers | |
parent | 7b104bcb8e460e45a1aebe3da9b86aacdb4cab12 (diff) | |
download | linux-869b2b444c58302e3233ce0b671fabf28135a37d.tar.xz |
[SCSI] zfcp: avoid clutter in erp_dbf
avoid clutter in erp_dbf
cleanup zfcp_fsf_req_dismiss functions:
- avoid clutter in erp_dbf (reqs_active is always 0)
- fold called three-line function into calling function
- add meaningful comment
- coding style
Signed-off-by: Martin Peschke <mp3@de.ibm.com>
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/s390/scsi/zfcp_fsf.c | 40 |
1 files changed, 13 insertions, 27 deletions
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index a8b02542ac2d..0eb31e162b15 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -156,44 +156,30 @@ zfcp_fsf_req_free(struct zfcp_fsf_req *fsf_req) kfree(fsf_req); } -/** - * zfcp_fsf_req_dismiss - dismiss a single fsf request - */ -static void zfcp_fsf_req_dismiss(struct zfcp_adapter *adapter, - struct zfcp_fsf_req *fsf_req, - unsigned int counter) -{ - u64 dbg_tmp[2]; - - dbg_tmp[0] = (u64) atomic_read(&adapter->reqs_active); - dbg_tmp[1] = (u64) counter; - debug_event(adapter->erp_dbf, 4, (void *) dbg_tmp, 16); - list_del(&fsf_req->list); - fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; - zfcp_fsf_req_complete(fsf_req); -} - -/** - * zfcp_fsf_req_dismiss_all - dismiss all remaining fsf requests +/* + * Never ever call this without shutting down the adapter first. + * Otherwise the adapter would continue using and corrupting s390 storage. + * Included BUG_ON() call to ensure this is done. + * ERP is supposed to be the only user of this function. */ void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter) { - struct zfcp_fsf_req *request, *tmp; + struct zfcp_fsf_req *fsf_req, *tmp; unsigned long flags; LIST_HEAD(remove_queue); - unsigned int i, counter; + unsigned int i; + BUG_ON(atomic_test_mask(ZFCP_STATUS_ADAPTER_QDIOUP, &adapter->status)); spin_lock_irqsave(&adapter->req_list_lock, flags); atomic_set(&adapter->reqs_active, 0); - for (i=0; i<REQUEST_LIST_SIZE; i++) + for (i = 0; i < REQUEST_LIST_SIZE; i++) list_splice_init(&adapter->req_list[i], &remove_queue); - spin_unlock_irqrestore(&adapter->req_list_lock, flags); - counter = 0; - list_for_each_entry_safe(request, tmp, &remove_queue, list) { - zfcp_fsf_req_dismiss(adapter, request, counter); - counter++; + list_for_each_entry_safe(fsf_req, tmp, &remove_queue, list) { + list_del(&fsf_req->list); + fsf_req->status |= ZFCP_STATUS_FSFREQ_DISMISSED; + zfcp_fsf_req_complete(fsf_req); } } |