linux-kernel - Re: linux-next: build failure after merge of the rdma tree

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Date:   Wed, 28 Sep 2016 11:43:48 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Doug Ledford <dledford@...hat.com>
Cc:     linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
        Christoph Hellwig <hch@....de>, Greg KH <greg@...ah.com>,
        Oleg Drokin <oleg.drokin@...el.com>,
        Andreas Dilger <andreas.dilger@...el.com>
Subject: Re: linux-next: build failure after merge of the rdma tree

Hi Stephen,

On Tue, 27 Sep 2016 11:23:34 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> Hi Doug,
> 
> After merging the rdma tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
> 
> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c: In function 'kiblnd_hdev_setup_mrs':
> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c:2317:7: error: implicit declaration of function 'ib_get_dma_mr' [-Werror=implicit-function-declaration]
>   mr = ib_get_dma_mr(hdev->ibh_pd, acflags);
>        ^
> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c:2317:5: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
>   mr = ib_get_dma_mr(hdev->ibh_pd, acflags);
>      ^
> 
> Caused by commit
> 
>   5ef990f06bd7 ("IB/core: remove ib_get_dma_mr")
> 
> I have used the rdma tree from next-20160923 for today.

As pointed out by Christoph, I should have just disabled the driver in
staging, so today I just applied the patch below.  Doug, that should
probably be applied to the rdma tree so that you don't break Linus'
tree when it gets merged.

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Wed, 28 Sep 2016 11:35:28 +1000
Subject: [PATCH] starging/lustre: disable LNET infiniband support

Commit 5ef990f06bd7 ("IB/core: remove ib_get_dma_mr") broke the
lustre LNET infiniband support.  Since this is in drivers/staging,
lets just disable it for now until ti can be fixed properly.

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 drivers/staging/lustre/lnet/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/lustre/lnet/Kconfig b/drivers/staging/lustre/lnet/Kconfig
index 2b5930150cda..13b43278a38d 100644
--- a/drivers/staging/lustre/lnet/Kconfig
+++ b/drivers/staging/lustre/lnet/Kconfig
@@ -35,6 +35,7 @@ config LNET_SELFTEST
 config LNET_XPRT_IB
 	tristate "LNET infiniband support"
 	depends on LNET && INFINIBAND && INFINIBAND_ADDR_TRANS
+	depends on BROKEN
 	default LNET && INFINIBAND
 	help
 	  This option allows the LNET users to use infiniband as an
-- 
2.8.1

-- 
Cheers,
Stephen Rothwell