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@xxxxxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_init.c | 7 +++++++
1 file changed, 7 insertions(+)
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
--
2.38.0
