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[SCSI] bfa: Modify ISR to process pending completions

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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: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Krishna Gudipati 2012-03-13 17:38:15 -07:00 committed by James Bottomley
parent acea241510
commit 1f67096ca5
1 changed files with 10 additions and 3 deletions
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13
drivers/scsi/bfa/bfa_core.c
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@ -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