Commit 1f67096c authored by Krishna Gudipati's avatar Krishna Gudipati Committed by James Bottomley
Browse files

[SCSI] bfa: Modify ISR to process pending completions 



Made changes to the driver ISR to process any pending completions even if
the RME bit is not set in the interrupt status register.

Signed-off-by: default avatarKrishna Gudipati <kgudipat@brocade.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent acea2415

drivers/scsi/bfa/bfa_core.c

+10 −3
Original line number Diff line number Diff line
@@ -231,16 +231,19 @@ bfa_reqq_resume(struct bfa_s *bfa, int qid) 
	}

}



static inline void

bfa_boolean_t

bfa_isr_rspq(struct bfa_s *bfa, int qid)

{

	struct bfi_msg_s *m;

	u32	pi, ci;

	struct list_head *waitq;

	bfa_boolean_t ret;



	ci = bfa_rspq_ci(bfa, qid);

	pi = bfa_rspq_pi(bfa, qid);



	ret = (ci != pi);



	while (ci != pi) {

		m = bfa_rspq_elem(bfa, qid, ci);

		WARN_ON(m->mhdr.msg_class >= BFI_MC_MAX);
@@ -260,6 +263,8 @@ bfa_isr_rspq(struct bfa_s *bfa, int qid) 
	waitq = bfa_reqq(bfa, qid);

	if (!list_empty(waitq))

		bfa_reqq_resume(bfa, qid);



	return ret;

}



static inline void
@@ -320,6 +325,7 @@ bfa_intx(struct bfa_s *bfa) 
{

	u32 intr, qintr;

	int queue;

	bfa_boolean_t rspq_comp = BFA_FALSE;



	intr = readl(bfa->iocfc.bfa_regs.intr_status);
@@ -332,11 +338,12 @@ bfa_intx(struct bfa_s *bfa) 
	 */

	if (bfa->queue_process) {

		for (queue = 0; queue < BFI_IOC_MAX_CQS; queue++)

			bfa_isr_rspq(bfa, queue);

			if (bfa_isr_rspq(bfa, queue))

				rspq_comp = BFA_TRUE;

	}



	if (!intr)

		return BFA_TRUE;

		return (qintr | rspq_comp) ? BFA_TRUE : BFA_FALSE;



	/*

	 * CPE completion queue interrupt