Date: Tue, 1 Aug 2017 14:07:31 -0400
From: Jon Mason <jdmason@kudzu.us>
To: Logan Gunthorpe <logang@deltatee.com>
Cc: linux-ntb@googlegroups.com, linux-pci@vger.kernel.org,
        linux-kernel@vger.kernel.org, Dave Jiang <dave.jiang@intel.com>,
        Allen Hubbe <Allen.Hubbe@emc.com>, Bjorn Helgaas <bhelgaas@google.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Kurt Schwemmer <kurt.schwemmer@microsemi.com>,
        Stephen Bates <sbates@raithlin.com>,
        Serge Semin <fancer.lancer@gmail.com>
Subject: Re: [PATCH v3 05/16] ntb: ntb_test: ensure the link is up before
 trying to configure the mws
Message-ID: <20170801180731.GC4186@kudzu.us>
References: <20170725205753.4735-1-logang@deltatee.com>
 <20170725205753.4735-6-logang@deltatee.com>
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On Tue, Jul 25, 2017 at 02:57:42PM -0600, Logan Gunthorpe wrote:
> After the link tests, there is a race on one side of the test for
> the link coming up. It's possible, in some cases, for the test script
> to write to the 'peer_trans' files before the link has come up.
> 
> To fix this, we simply use the link event file to ensure both sides
> see the link as up before continuning.
> 
> Signed-off-by: Logan Gunthorpe <logang@deltatee.com>

This looks like a bug fix.  Assuming this is the case, I can pull it
out, add a "Fixes" line, and add it to my bug fixes branch.  Is this
the case?

Thanks,
Jon

> ---
>  tools/testing/selftests/ntb/ntb_test.sh | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/tools/testing/selftests/ntb/ntb_test.sh b/tools/testing/selftests/ntb/ntb_test.sh
> index 1c12b5855e4f..5fc7ad359e21 100755
> --- a/tools/testing/selftests/ntb/ntb_test.sh
> +++ b/tools/testing/selftests/ntb/ntb_test.sh
> @@ -333,6 +333,10 @@ function ntb_tool_tests()
>  	link_test $LOCAL_TOOL $REMOTE_TOOL
>  	link_test $REMOTE_TOOL $LOCAL_TOOL
>  
> +	#Ensure the link is up on both sides before continuing
> +	write_file Y $LOCAL_TOOL/link_event
> +	write_file Y $REMOTE_TOOL/link_event
> +
>  	for PEER_TRANS in $(ls $LOCAL_TOOL/peer_trans*); do
>  		PT=$(basename $PEER_TRANS)
>  		write_file $MW_SIZE $LOCAL_TOOL/$PT
> -- 
> 2.11.0
> 
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