diff options
| author | Chad Dupuis <chad.dupuis@qlogic.com> | 2014-09-02 22:34:58 +0400 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-09-16 20:10:14 +0400 |
| commit | 5565461e30c15525c431814dd612118a78d05992 (patch) | |
| tree | 6bc1fd956899655443cc607e0b367bead8a222a7 | |
| parent | fd10ccfa8dfe740f61471b212c200fbdb5de82f5 (diff) | |
| download | linux-5565461e30c15525c431814dd612118a78d05992.tar.xz | |
bnx2fc: fix incorrect DMA memory mapping in bnx2fc_unmap_sg_list()
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 <eddie.wai@broadcom.com>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | drivers/scsi/bnx2fc/bnx2fc_io.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c index 4c5891e66038..0679782d9d15 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; } } |