Messages in this thread | | | Date | Tue, 5 Apr 2016 13:50:24 -0400 | Subject | Re: [PATCH] bnx2fc: Fix locking requirements in bnx2fc_init_tgt | From | Bastien Bastien Philbert <> |
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On Tue, Apr 5, 2016 at 1:43 PM, Chad Dupuis <chad.dupuis@qlogic.com> wrote: > > > On Tue, 5 Apr 2016, Bastien Philbert wrote: > >> This fixes the locking around the call to bnx2fc_alloc_id to comply >> with the comments about this particular function's definition about >> requiring the need to hold the hba mutex before and after calling >> it. >> Signed-off-by: Bastien Philbert <bastienphilbert@gmail.com> >> --- >> drivers/scsi/bnx2fc/bnx2fc_tgt.c | 6 +++++- >> 1 file changed, 5 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/scsi/bnx2fc/bnx2fc_tgt.c >> b/drivers/scsi/bnx2fc/bnx2fc_tgt.c >> index 08ec318..f2988cd 100644 >> --- a/drivers/scsi/bnx2fc/bnx2fc_tgt.c >> +++ b/drivers/scsi/bnx2fc/bnx2fc_tgt.c >> @@ -368,9 +368,13 @@ static int bnx2fc_init_tgt(struct bnx2fc_rport *tgt, >> return -1; >> } >> >> + mutex_lock(&hba->hba_mutex); >> tgt->fcoe_conn_id = bnx2fc_alloc_conn_id(hba, tgt); >> - if (tgt->fcoe_conn_id == -1) >> + if (tgt->fcoe_conn_id == -1) { >> + mutex_unlock(&hba->hba_mutex); >> return -1; >> + } >> + mutex_unlock(&hba->hba_mutex); >> >> BNX2FC_TGT_DBG(tgt, "init_tgt - conn_id = 0x%x\n", >> tgt->fcoe_conn_id); >> >> > > Taking the mutex here is not needed as it is already taken in > bnx2fc_rport_event_handler() in the call chain > bnx2fc_rport_event_handler->bnx2fc_offload_session->bnx2fc_init_tgt->bnx2fc_alloc_conn_id Ok thanks and good to known. Bastien
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