diff mbox series

[04/12] lpfc: Set max dma segment size to hba supported SGE length

Message ID 20230109233317.54737-5-justintee8345@gmail.com
State New
Headers show
Series lpfc: Update lpfc to revision 14.2.0.10 | expand

Commit Message

Justin Tee Jan. 9, 2023, 11:33 p.m. UTC 
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: Justin Tee <justin.tee@broadcom.com>
---
 drivers/scsi/lpfc/lpfc_init.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 25ba20e42825..4d58373f6ab6 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -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