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[SCSI] ibmvscsi: Correct DMA mapping leak

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The ibmvscsi client driver is not unmapping the SCSI command after
encountering a DMA mapping error while trying to map an indirect
scattergather list for the event pool.  This leads to a leak of DMA
entitlement that could result in the device failing future DMA operations
in a CMO environment.

Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Robert Jennings 2009-01-22 13:40:09 -06:00 committed by James Bottomley
parent 4c098bcd55
commit e637d55319
1 changed files with 1 additions and 0 deletions
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drivers/scsi/ibmvscsi/ibmvscsi.c
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@ -432,6 +432,7 @@ static int map_sg_data(struct scsi_cmnd *cmd,
sdev_printk(KERN_ERR, cmd->device,
"Can't allocate memory "
"for indirect table\n");
scsi_dma_unmap(cmd);
return 0;
}
}