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authorJenx Axboe <axboe@suse.de>2006-02-05 16:36:23 +0100
committer <jejb@mulgrave.il.steeleye.com>2006-02-05 12:59:29 -0600
commit40cdc840dc337cb17d81bcf028b40834e78c1038 (patch)
tree6d8bb794620cfe0c1daf3d35cb7ac8ab5d95ebf9
parentf9876f0b67c3f0b04ee2167602df54e7ae139ad7 (diff)
[SCSI] gdth: don't map zero-length requests
Don't map zero-length requests in gdth, zome architectures don't like that in their dma mapping routines. [ I'm pretty sure Jens posted this before, but for some reason it got forgotten --hch ] Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
-rw-r--r--drivers/scsi/gdth.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index bd3ffdf6c80..62e3cda859a 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -2816,7 +2816,7 @@ static int gdth_fill_cache_cmd(int hanum,Scsi_Cmnd *scp,ushort hdrive)
}
#endif
- } else {
+ } else if (scp->request_bufflen) {
scp->SCp.Status = GDTH_MAP_SINGLE;
scp->SCp.Message = (read_write == 1 ?
PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);