[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: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/bfa/bfa_core.c b/drivers/scsi/bfa/bfa_core.c
index 4bd546bcc240740fdadd04fd435828b4dc94f4f6..035c9d5caf01ce62453991dd46e62c35dd802863 100644 (file)
--- a/drivers/scsi/bfa/bfa_core.c
+++ b/drivers/scsi/bfa/bfa_core.c
@@ -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