2.6.29-stable review patch. If anyone has any objections, please let us know. ------------------ From: adam radford commit 7b14f58ad65f9d74e4273fb45360cfea824495aa upstream. This patch fixes the following regression that occurred during the scsi_dma_map()/unmap() changes when compiling with CONFIG_DMA_API_DEBUG=y : WARNING: at lib/dma-debug.c:496 check_unmap+0x142/0x542() Hardware name: 3w-xxxx 0000:02:02.0: DMA-API: device driver tries to free DMA memory it has not allocated [device address=0x0000000000000000] [size=36 bytes] Signed-off-by: Adam Radford Signed-off-by: James Bottomley Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/3w-xxxx.c | 5 +++-- drivers/scsi/3w-xxxx.h | 2 +- 2 files changed, 4 insertions(+), 3 deletions(-) --- a/drivers/scsi/3w-xxxx.c +++ b/drivers/scsi/3w-xxxx.c @@ -6,7 +6,7 @@ Arnaldo Carvalho de Melo Brad Strand - Copyright (C) 1999-2007 3ware Inc. + Copyright (C) 1999-2009 3ware Inc. Kernel compatiblity By: Andre Hedrick Non-Copyright (C) 2000 Andre Hedrick @@ -1294,7 +1294,8 @@ static void tw_unmap_scsi_data(struct pc { dprintk(KERN_WARNING "3w-xxxx: tw_unmap_scsi_data()\n"); - scsi_dma_unmap(cmd); + if (cmd->SCp.phase == TW_PHASE_SGLIST) + scsi_dma_unmap(cmd); } /* End tw_unmap_scsi_data() */ /* This function will reset a device extension */ --- a/drivers/scsi/3w-xxxx.h +++ b/drivers/scsi/3w-xxxx.h @@ -6,7 +6,7 @@ Arnaldo Carvalho de Melo Brad Strand - Copyright (C) 1999-2007 3ware Inc. + Copyright (C) 1999-2009 3ware Inc. Kernel compatiblity By: Andre Hedrick Non-Copyright (C) 2000 Andre Hedrick -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/