>
[Jack Wang]
Sorry, I forget to mention the patch are based on dan's V2 libsas fix.
> Hi all,
>
> For detecting a failure to transmit initial dev to host FIS as described
in
> section G.5 of sas-2 r 04b , In order to generate the dev to host FIS, we
> send a link reset to the expander port, but this may still fail for some
> device, when this happened , we should ignore this , do not set the phy,
let
> libsas find the device later .
>
> >From a315c8ee6f6b7ad000d6dc72d31dfb576ecbceb5 Mon Sep 17 00:00:00 2001
> From: Jack Wang <jack_wang@xxxxxxxxx>
> Date: Tue, 27 Dec 2011 02:25:19 -0500
> Subject: [PATCH] don't set the invalid phy
>
> Signed-off-by: Lindar Liu <Lindar_liu@xxxxxxxxx>
> Signed-off-by: Jack Wang <jack_wang@xxxxxxxxx>
> ---
> drivers/scsi/libsas/sas_expander.c | 6 ++++++
> 1 files changed, 6 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/scsi/libsas/sas_expander.c
> b/drivers/scsi/libsas/sas_expander.c
> index e47599b..c7a27c7 100644
> --- a/drivers/scsi/libsas/sas_expander.c
> +++ b/drivers/scsi/libsas/sas_expander.c
> @@ -304,6 +304,12 @@ static int sas_ex_phy_discover_helper(struct
> domain_device *dev, u8 *disc_req,
> /* Wait for the reset to trigger the negotiation */
> msleep(500);
> }
> + if ((dr->attached_dev_type == 0 &&
> + dr->attached_sata_dev)) {
> + sas_printk("Found sata attached_dev_type = 0, ignore it to
> let it found later!\n");
> + return 0;
> + }
> +
> sas_set_ex_phy(dev, single, disc_resp);
> return 0;
> }
> --
> 1.7.1
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