From: Ewan D. Milne Date: Thu, 13 Dec 2018 20:25:16 +0000 (-0500) Subject: scsi: lpfc: do not set queue->page_count to 0 if pc_sli4_params.wqpcnt is invalid X-Git-Tag: v4.14.93~53 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0840feb396aa78cdcac7f9b30f7678b68e22fddb;p=platform%2Fkernel%2Flinux-exynos.git scsi: lpfc: do not set queue->page_count to 0 if pc_sli4_params.wqpcnt is invalid commit 4e87eb2f46ea547d12a276b2e696ab934d16cfb6 upstream. Certain older adapters such as the OneConnect OCe10100 may not have a valid wqpcnt value. In this case, do not set queue->page_count to 0 in lpfc_sli4_queue_alloc() as this will prevent the driver from initializing. Fixes: 895427bd01 ("scsi: lpfc: NVME Initiator: Base modifications") Cc: stable@vger.kernel.org # 4.11+ Signed-off-by: Ewan D. Milne Reviewed-by: Laurence Oberman Tested-by: Laurence Oberman Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 24b6e56..6c2b098 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -13941,7 +13941,8 @@ lpfc_sli4_queue_alloc(struct lpfc_hba *phba, uint32_t entry_size, hw_page_size))/hw_page_size; /* If needed, Adjust page count to match the max the adapter supports */ - if (queue->page_count > phba->sli4_hba.pc_sli4_params.wqpcnt) + if (phba->sli4_hba.pc_sli4_params.wqpcnt && + (queue->page_count > phba->sli4_hba.pc_sli4_params.wqpcnt)) queue->page_count = phba->sli4_hba.pc_sli4_params.wqpcnt; INIT_LIST_HEAD(&queue->list);