From: James Smart Date: Thu, 31 Mar 2016 21:12:28 +0000 (-0700) Subject: lpfc: Fix DMA faults observed upon plugging loopback connector X-Git-Tag: v4.7-rc1~131^2~96 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ae09c765109293b600ba9169aa3d632e1ac1a843;p=karo-tx-linux.git lpfc: Fix DMA faults observed upon plugging loopback connector Driver didn't program the REG_VFI mailbox correctly, giving the adapter bad addresses. Signed-off-by: Dick Kennedy Signed-off-by: James Smart Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/lpfc/lpfc_mbox.c b/drivers/scsi/lpfc/lpfc_mbox.c index f87f90e9b7df..1e34b5408a29 100644 --- a/drivers/scsi/lpfc/lpfc_mbox.c +++ b/drivers/scsi/lpfc/lpfc_mbox.c @@ -2145,10 +2145,12 @@ lpfc_reg_vfi(struct lpfcMboxq *mbox, struct lpfc_vport *vport, dma_addr_t phys) reg_vfi->wwn[1] = cpu_to_le32(reg_vfi->wwn[1]); reg_vfi->e_d_tov = phba->fc_edtov; reg_vfi->r_a_tov = phba->fc_ratov; - reg_vfi->bde.addrHigh = putPaddrHigh(phys); - reg_vfi->bde.addrLow = putPaddrLow(phys); - reg_vfi->bde.tus.f.bdeSize = sizeof(vport->fc_sparam); - reg_vfi->bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; + if (phys) { + reg_vfi->bde.addrHigh = putPaddrHigh(phys); + reg_vfi->bde.addrLow = putPaddrLow(phys); + reg_vfi->bde.tus.f.bdeSize = sizeof(vport->fc_sparam); + reg_vfi->bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; + } bf_set(lpfc_reg_vfi_nport_id, reg_vfi, vport->fc_myDID); /* Only FC supports upd bit */