From: Vijaya Mohan Guvva Date: Thu, 21 Nov 2013 09:37:46 +0000 (-0800) Subject: [SCSI] bfa: Fix for bcu or hcm faa query hang X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=7593e524254a8e477e28dc662ca27b8b0ab9f1d7;p=deliverable%2Flinux.git [SCSI] bfa: Fix for bcu or hcm faa query hang This patch set fixes the issue of brocade management utility hang (bcu/HCM) when faa attributes are queried from multiple application threads. Hang was due to race between the threads and completion handler corruption. Signed-off-by: Vijaya Mohan Guvva Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/bfa/bfa_core.c b/drivers/scsi/bfa/bfa_core.c index 520540a5fef6..e3f67b097a5c 100644 --- a/drivers/scsi/bfa/bfa_core.c +++ b/drivers/scsi/bfa/bfa_core.c @@ -1367,10 +1367,6 @@ bfa_faa_query(struct bfa_s *bfa, struct bfa_faa_attr_s *attr, struct bfa_iocfc_s *iocfc = &bfa->iocfc; bfa_status_t status; - iocfc->faa_args.faa_attr = attr; - iocfc->faa_args.faa_cb.faa_cbfn = cbfn; - iocfc->faa_args.faa_cb.faa_cbarg = cbarg; - status = bfa_faa_validate_request(bfa); if (status != BFA_STATUS_OK) return status; @@ -1378,6 +1374,10 @@ bfa_faa_query(struct bfa_s *bfa, struct bfa_faa_attr_s *attr, if (iocfc->faa_args.busy == BFA_TRUE) return BFA_STATUS_DEVBUSY; + iocfc->faa_args.faa_attr = attr; + iocfc->faa_args.faa_cb.faa_cbfn = cbfn; + iocfc->faa_args.faa_cb.faa_cbarg = cbarg; + iocfc->faa_args.busy = BFA_TRUE; memset(&faa_attr_req, 0, sizeof(struct bfi_faa_query_s)); bfi_h2i_set(faa_attr_req.mh, BFI_MC_IOCFC,