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| author | FUJITA Tomonori <tomof@acm.org> | 2007-07-04 06:03:11 -0700 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.localdomain> | 2007-07-14 17:13:02 -0500 |
| commit | c59fd9ebc46da8d48b76955d4d48e3597f8c8726 (patch) | |
| tree | 17310b76cc57476b10b735603d3acc5b824ddecb /drivers/scsi/lpfc | |
| parent | d4bd4cd0630060a64681590b9405b87e43c11f14 (diff) | |
| download | linux-c59fd9ebc46da8d48b76955d4d48e3597f8c8726.tar.gz linux-c59fd9ebc46da8d48b76955d4d48e3597f8c8726.tar.bz2 linux-c59fd9ebc46da8d48b76955d4d48e3597f8c8726.zip | |
[SCSI] lpfc: fix NPIV mapping problems
This patch uses dma_map_sg with phba->pcidev->dev instead of
scsi_dma_map.
scsi_dma_map doesn't work for NPIV since fc_vport->dev isn't fully
initialized. check_addr() in arch/x86_64/kernel/pci-nommu.c leads to
the crash since dev->dma_mask is NULL.
For more details:
http://marc.info/?l=linux-scsi&m=118312448030633&w=2
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: James Smart <James.Smart@Emulex.Com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/lpfc')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_scsi.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 3d35eae01475..8f45bbc42126 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -332,8 +332,7 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) * data bde entry. */ bpl += 2; - nseg = scsi_dma_map(scsi_cmnd); - if (nseg > 0) { + if (scsi_sg_count(scsi_cmnd)) { /* * The driver stores the segment count returned from pci_map_sg * because this a count of dma-mappings used to map the use_sg @@ -341,6 +340,11 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) * architectures that implement an IOMMU. */ + nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), + scsi_sg_count(scsi_cmnd), datadir); + if (unlikely(!nseg)) + return 1; + lpfc_cmd->seg_cnt = nseg; if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { printk(KERN_ERR "%s: Too many sg segments from " @@ -370,8 +374,7 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) bpl++; num_bde++; } - } else if (nseg < 0) - return 1; + } /* * Finish initializing those IOCB fields that are dependent on the |