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| author | Harish Zunjarrao <harish.zunjarrao@qlogic.com> | 2010-03-19 17:04:00 -0700 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-04-11 09:45:50 -0500 |
| commit | d5459083af5b6e01796797edd12555ab586c6092 (patch) | |
| tree | 5384b2bd1bc40ea0e5ec6aefc0b9d6e74f9ae36a /drivers/scsi/qla2xxx | |
| parent | 09ff701a177b116c6c15b6e501e58fbfb306b424 (diff) | |
| download | linux-d5459083af5b6e01796797edd12555ab586c6092.tar.gz linux-d5459083af5b6e01796797edd12555ab586c6092.tar.bz2 linux-d5459083af5b6e01796797edd12555ab586c6092.zip | |
[SCSI] qla2xxx: Free DMA memory only if it is allocated in vendor specific BSG command
The qla84xx_mgmt_cmd function supports multiple subcommands.
Some subcommands require DMA memory and some do not.
Therefore check before freeing DMA memory whether it is allocated or not.
Signed-off-by: Harish Zunjarrao <harish.zunjarrao@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/qla2xxx')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_bsg.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c index 3c3a86ca6cbd..584c52d134fa 100644 --- a/drivers/scsi/qla2xxx/qla_bsg.c +++ b/drivers/scsi/qla2xxx/qla_bsg.c @@ -804,7 +804,7 @@ qla84xx_mgmt_cmd(struct fc_bsg_job *bsg_job) int rval = 0; struct qla_bsg_a84_mgmt *ql84_mgmt; uint32_t sg_cnt; - uint32_t data_len; + uint32_t data_len = 0; uint32_t dma_direction = DMA_NONE; if (test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) || @@ -980,9 +980,11 @@ qla84xx_mgmt_cmd(struct fc_bsg_job *bsg_job) } bsg_job->job_done(bsg_job); - dma_free_coherent(&ha->pdev->dev, data_len, mgmt_b, mgmt_dma); done_unmap_sg: + if (mgmt_b) + dma_free_coherent(&ha->pdev->dev, data_len, mgmt_b, mgmt_dma); + if (dma_direction == DMA_TO_DEVICE) dma_unmap_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list, bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE); |