[PATCH] libata: add FIXME above ata_dev_xfermask()

Add FIXME above ata_dev_xfermask noting that the current
implementation limits all transfer modes to the fastest of the slowest
device on a port which isn't necessary.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 64f71df19ed..1cb98137532 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -2633,6 +2633,10 @@ static int ata_dma_blacklisted(const struct ata_device *dev)
  *      known limits including host controller limits, device
  *      blacklist, etc...
  *
+ *      FIXME: The current implementation limits all transfer modes to
+ *      the fastest of the lowested device on the port.  This is not
+ *      required on most controllers. 
+ *
  *      LOCKING:
  *      None.
  */