[SCSI] lpfc 8.3.35: Fix interrupt delay multipler conversion for eq_create
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 219bf53..f0e5aea 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -12099,6 +12099,7 @@
struct lpfc_queue *eq;
int cnt, rc, length, status = 0;
uint32_t shdr_status, shdr_add_status;
+ uint32_t result;
int fcp_eqidx;
union lpfc_sli4_cfg_shdr *shdr;
uint16_t dmult;
@@ -12117,8 +12118,11 @@
eq_delay = &mbox->u.mqe.un.eq_delay;
/* Calculate delay multiper from maximum interrupt per second */
- dmult = phba->cfg_fcp_imax / phba->cfg_fcp_io_channel;
- dmult = LPFC_DMULT_CONST/dmult - 1;
+ result = phba->cfg_fcp_imax / phba->cfg_fcp_io_channel;
+ if (result > LPFC_DMULT_CONST)
+ dmult = 0;
+ else
+ dmult = LPFC_DMULT_CONST/result - 1;
cnt = 0;
for (fcp_eqidx = startq; fcp_eqidx < phba->cfg_fcp_io_channel;
@@ -12174,7 +12178,7 @@
* fails this function will return -ENXIO.
**/
uint32_t
-lpfc_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint16_t imax)
+lpfc_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint32_t imax)
{
struct lpfc_mbx_eq_create *eq_create;
LPFC_MBOXQ_t *mbox;
@@ -12206,7 +12210,10 @@
LPFC_EQE_SIZE);
bf_set(lpfc_eq_context_valid, &eq_create->u.request.context, 1);
/* Calculate delay multiper from maximum interrupt per second */
- dmult = LPFC_DMULT_CONST/imax - 1;
+ if (imax > LPFC_DMULT_CONST)
+ dmult = 0;
+ else
+ dmult = LPFC_DMULT_CONST/imax - 1;
bf_set(lpfc_eq_context_delay_multi, &eq_create->u.request.context,
dmult);
switch (eq->entry_count) {