This patch is based on a problem and solution from Maurizio Lombardi where bnx2fc isn't consistent in which device struct we using for DMA map and unmap operations. Make them consistent by using dma_sg_unmap in bnx2fc_unmap_sg_list like bnx2fc_map_sg.
Reviewed-by: Eddie Wai <[email protected]> Signed-off-by: Chad Dupuis <[email protected]> --- drivers/scsi/bnx2fc/bnx2fc_io.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c index 4c5891e..0679782 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_io.c +++ b/drivers/scsi/bnx2fc/bnx2fc_io.c @@ -1654,6 +1654,10 @@ static int bnx2fc_map_sg(struct bnx2fc_cmd *io_req) u64 addr; int i; + /* + * Use dma_map_sg directly to ensure we're using the correct + * dev struct off of pcidev. + */ sg_count = dma_map_sg(&hba->pcidev->dev, scsi_sglist(sc), scsi_sg_count(sc), sc->sc_data_direction); scsi_for_each_sg(sc, sg, sg_count, i) { @@ -1703,9 +1707,16 @@ static int bnx2fc_build_bd_list_from_sg(struct bnx2fc_cmd *io_req) static void bnx2fc_unmap_sg_list(struct bnx2fc_cmd *io_req) { struct scsi_cmnd *sc = io_req->sc_cmd; + struct bnx2fc_interface *interface = io_req->port->priv; + struct bnx2fc_hba *hba = interface->hba; - if (io_req->bd_tbl->bd_valid && sc) { - scsi_dma_unmap(sc); + /* + * Use dma_unmap_sg directly to ensure we're using the correct + * dev struct off of pcidev. + */ + if (io_req->bd_tbl->bd_valid && sc && scsi_sg_count(sc)) { + dma_unmap_sg(&hba->pcidev->dev, scsi_sglist(sc), + scsi_sg_count(sc), sc->sc_data_direction); io_req->bd_tbl->bd_valid = 0; } } -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
