Commit b5c894cf authored by Justin Tee's avatar Justin Tee Committed by Martin K. Petersen
Browse files

scsi: lpfc: Set max DMA segment size to HBA supported SGE length 



During I/O, the following warning message occasionally appears:

DMA-API: lpfc 0000:04:00.0: mapping sg segment longer than device claims to
support [len=131072] [max=65536]

The HBA is capable of supporting 131,072 bytes, so notify DMA layer via the
dma_set_max_seg_size() API during hba initialization.

Signed-off-by: default avatarJustin Tee <justin.tee@broadcom.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 7ab07683

drivers/scsi/lpfc/lpfc_init.c

+7 −0
Original line number Diff line number Diff line
@@ -13917,6 +13917,13 @@ lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) 
	if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)

		sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;



	rc = dma_set_max_seg_size(&phba->pcidev->dev, sli4_params->sge_supp_len);

	if (unlikely(rc)) {

		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,

				"6400 Can't set dma maximum segment size\n");

		return rc;

	}



	/*

	 * Check whether the adapter supports an embedded copy of the

	 * FCP CMD IU within the WQE for FCP_Ixxx commands. In order