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To:     virtualization@lists.linux-foundation.org,
        LKML <linux-kernel@vger.kernel.org>,
        "netdev@vger.kernel.org" <netdev@vger.kernel.org>
Cc:     "Michael S. Tsirkin" <mst@redhat.com>,
        Jason Wang <jasowang@redhat.com>,
        Saeed Mahameed <saeedm@nvidia.com>,
        Leon Romanovsky <leonro@nvidia.com>
From:   Randy Dunlap <rdunlap@infradead.org>
Subject: [PATCH v3 -next] vdpa: mlx5: change Kconfig depends to fix build
 errors
Message-ID: <73f7e48b-8d16-6b20-07d3-41dee0e3d3bd@infradead.org>
Date:   Thu, 17 Sep 2020 19:35:03 -0700
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From: Randy Dunlap <rdunlap@infradead.org>

drivers/vdpa/mlx5/ uses vhost_iotlb*() interfaces, so add a dependency
on VHOST to eliminate build errors.

ld: drivers/vdpa/mlx5/core/mr.o: in function `add_direct_chain':
mr.c:(.text+0x106): undefined reference to `vhost_iotlb_itree_first'
ld: mr.c:(.text+0x1cf): undefined reference to `vhost_iotlb_itree_next'
ld: mr.c:(.text+0x30d): undefined reference to `vhost_iotlb_itree_first'
ld: mr.c:(.text+0x3e8): undefined reference to `vhost_iotlb_itree_next'
ld: drivers/vdpa/mlx5/core/mr.o: in function `_mlx5_vdpa_create_mr':
mr.c:(.text+0x908): undefined reference to `vhost_iotlb_itree_first'
ld: mr.c:(.text+0x9e6): undefined reference to `vhost_iotlb_itree_next'
ld: drivers/vdpa/mlx5/core/mr.o: in function `mlx5_vdpa_handle_set_map':
mr.c:(.text+0xf1d): undefined reference to `vhost_iotlb_itree_first'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Cc: Saeed Mahameed <saeedm@nvidia.com>
Cc: Leon Romanovsky <leonro@nvidia.com>
Cc: netdev@vger.kernel.org
---
v2: change from select to depends on VHOST (Saeed)
v3: change to depends on VHOST_IOTLB (Jason)

 drivers/vdpa/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20200917.orig/drivers/vdpa/Kconfig
+++ linux-next-20200917/drivers/vdpa/Kconfig
@@ -31,7 +31,7 @@ config IFCVF
 
 config MLX5_VDPA
 	bool "MLX5 VDPA support library for ConnectX devices"
-	depends on MLX5_CORE
+	depends on VHOST_IOTLB && MLX5_CORE
 	default n
 	help
 	  Support library for Mellanox VDPA drivers. Provides code that is