Commit e637d553 authored Jan 22, 2009 by Robert Jennings Committed by James Bottomley Feb 10, 2009

[SCSI] ibmvscsi: Correct DMA mapping leak



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>

parent 4c098bcd

drivers/scsi/ibmvscsi/ibmvscsi.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -432,6 +432,7 @@ static int map_sg_data(struct scsi_cmnd *cmd,
	sdev_printk(KERN_ERR, cmd->device,		sdev_printk(KERN_ERR, cmd->device,
	"Can't allocate memory "		"Can't allocate memory "
	"for indirect table\n");		"for indirect table\n");
			scsi_dma_unmap(cmd);
	return 0;		return 0;
	}		}
	}		}