linux-kernel - [PATCH v2 1/2] vdpa-sim: depend on HAS

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Date:   Mon, 6 Apr 2020 08:12:42 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Ard Biesheuvel <ardb@...nel.org>,
        "richard.henderson@...aro.org" <richard.henderson@...aro.org>,
        "christophe.lyon@...com" <christophe.lyon@...com>,
        kbuild test robot <lkp@...el.com>,
        "daniel.santos@...ox.com" <daniel.santos@...ox.com>,
        Jason Wang <jasowang@...hat.com>,
        "kbuild-all@...ts.01.org" <kbuild-all@...ts.01.org>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        virtualization@...ts.linux-foundation.org
Subject: [PATCH v2 1/2] vdpa-sim: depend on HAS_DMA

set_dma_ops isn't available on all architectures:

        make ARCH=um
...

   drivers/vdpa/vdpa_sim/vdpa_sim.c: In function 'vdpasim_create':
>> drivers/vdpa/vdpa_sim/vdpa_sim.c:324:2: error: implicit declaration of function 'set_dma_ops'; did you mean 'set_groups'?
+[-Werror=implicit-function-declaration]
     set_dma_ops(dev, &vdpasim_dma_ops);
     ^~~~~~~~~~~
     set_groups

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 drivers/vdpa/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vdpa/Kconfig b/drivers/vdpa/Kconfig
index 08b615f2da39..d0cb0e583a5d 100644
--- a/drivers/vdpa/Kconfig
+++ b/drivers/vdpa/Kconfig
@@ -14,7 +14,7 @@ if VDPA_MENU
 
 config VDPA_SIM
 	tristate "vDPA device simulator"
-	depends on RUNTIME_TESTING_MENU
+	depends on RUNTIME_TESTING_MENU && HAS_DMA
 	select VDPA
 	select VHOST_RING
 	select VHOST_IOTLB
-- 
MST