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[SCSI] 3w-9xxx: scsi_dma_unmap fix 

This patch fixes the following regression the occurred during the
scsi_dma_map()/unmap() changes:

3w-9xxx 0001:45:00.0: DMA-API: device driver tries to free DMA memory
it has not allocated [device address=0x0000000000000000] [size=36
bytes]

Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
adam radford 2009-05-05 11:45:37 -07:00 committed by James Bottomley
parent 5e43754fd9
commit 8454e9888c
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/3w-9xxx.c
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@ -1978,7 +1978,8 @@ static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id)
{
struct scsi_cmnd *cmd = tw_dev->srb[request_id];
scsi_dma_unmap(cmd);
if (cmd->SCp.phase == TW_PHASE_SGLIST)
scsi_dma_unmap(cmd);
} /* End twa_unmap_scsi_data() */
/* scsi_host_template initializer */