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| author |   James Smart <jsmart2021@gmail.com> | 2019-03-12 16:30:15 -0700 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2019-03-19 12:57:02 -0400 |
| commit | e2ffe4d5dc3f45a8bb9e96790583530dfae7b8af (patch) | |
| tree | 7b63cae8d74982b2faf5843a06fbb4a45d2043d7 /drivers/scsi/lpfc/lpfc_sli.c | |
| parent | scsi: lpfc: Coordinate adapter error handling with offline handling (diff) | |
| download | linux-dev-e2ffe4d5dc3f45a8bb9e96790583530dfae7b8af.tar.xz linux-dev-e2ffe4d5dc3f45a8bb9e96790583530dfae7b8af.zip | |
scsi: lpfc: Convert bootstrap mbx polling from msleep to udelay
Current code is using msleep when polling for hw ready. Unfortunately the
msleep routine isn't very accurate on rescheduling. In fact, on a busy
systems which reset the adapter, it became 10s of seconds before it was
rescheduled.
Fix by busy waiting using udelay. As we're now busy waiting, significantly
reduce the wait time so that we can exit the pool loop as soon as possible.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 4b084a408e71..5c162ab25a89 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -8507,7 +8507,7 @@ lpfc_sli4_wait_bmbx_ready(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr); db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg); if (!db_ready) - msleep(2); + mdelay(2); if (time_after(jiffies, timeout)) return MBXERR_ERROR; |