4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Martin Wilck <mwilck@xxxxxxxx>
commit dfb7513374c1f8e7cd595106fbdba3fd07ebaf30 upstream.
Since f44ac12f1dcc, BG enablement is tracked with the LPFC_SLI3_BG_ENABLED
bit, which is set in lpfc_get_cfgparam before lpfc_sli_config_sli_port() is
called. The bit shouldn't be cleared before checking the feature. Based on
problem analysis by David Bond.
Fixes: f44ac12f1dcc "scsi: lpfc: Memory allocation error during driver start-up on power8"
Tested-by: David Bond <dbond@xxxxxxxx>
Signed-off-by: Martin Wilck <mwilck@xxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # 4.17.x
Cc: stable@xxxxxxxxxxxxxxx # 4.18.x
Cc: stable@xxxxxxxxxxxxxxx # 4.19.x
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx>
Acked-by: James Smart <jsmart2021@xxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_init.c | 6 +++++-
drivers/scsi/lpfc/lpfc_sli.c | 1 -
2 files changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -167,7 +167,11 @@ lpfc_config_port_prep(struct lpfc_hba *p
sizeof(phba->wwpn));
}
- phba->sli3_options = 0x0;
+ /*
+ * Clear all option bits except LPFC_SLI3_BG_ENABLED,
+ * which was already set in lpfc_get_cfgparam()
+ */
+ phba->sli3_options &= (uint32_t)LPFC_SLI3_BG_ENABLED;
/* Setup and issue mailbox READ REV command */
lpfc_read_rev(phba, pmb);
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -4969,7 +4969,6 @@ lpfc_sli_config_port(struct lpfc_hba *ph
phba->sli3_options &= ~(LPFC_SLI3_NPIV_ENABLED |
LPFC_SLI3_HBQ_ENABLED |
LPFC_SLI3_CRP_ENABLED |
- LPFC_SLI3_BG_ENABLED |
LPFC_SLI3_DSS_ENABLED);
if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
