linux-kernel - [PATCH 1/7] lightnvm: NVM should depend on HAS

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Message-Id: <1474028709-30260-2-git-send-email-m@bjorling.me>
Date:   Fri, 16 Sep 2016 14:25:03 +0200
From:   Matias Bjørling <m@...rling.me>
To:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        axboe@...com
Cc:     keith.busch@...el.com, Geert Uytterhoeven <geert@...ux-m68k.org>,
        Matias Bjørling <m@...rling.me>
Subject: [PATCH 1/7] lightnvm: NVM should depend on HAS_DMA

From: Geert Uytterhoeven <geert@...ux-m68k.org>

If NO_DMA=y:

    drivers/built-in.o: In function `nvme_nvm_dev_dma_free':
    lightnvm.c:(.text+0x23df1a): undefined reference to `dma_pool_free'
    drivers/built-in.o: In function `nvme_nvm_dev_dma_alloc':
    lightnvm.c:(.text+0x23df38): undefined reference to `dma_pool_alloc'
    drivers/built-in.o: In function `nvme_nvm_destroy_dma_pool':
    lightnvm.c:(.text+0x23df4c): undefined reference to `dma_pool_destroy'
    drivers/built-in.o: In function `nvme_nvm_create_dma_pool':
    lightnvm.c:(.text+0x23df7e): undefined reference to `dma_pool_create'

and

    ERROR: "dma_pool_destroy" [drivers/nvme/host/nvme-core.ko] undefined!
    ERROR: "dma_pool_free" [drivers/nvme/host/nvme-core.ko] undefined!
    ERROR: "dma_pool_alloc" [drivers/nvme/host/nvme-core.ko] undefined!
    ERROR: "dma_pool_create" [drivers/nvme/host/nvme-core.ko] undefined!

Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
Signed-off-by: Matias Bjørling <m@...rling.me>
---
 drivers/lightnvm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/lightnvm/Kconfig b/drivers/lightnvm/Kconfig
index 61c68a1..2f5d5f4 100644
--- a/drivers/lightnvm/Kconfig
+++ b/drivers/lightnvm/Kconfig
@@ -4,7 +4,7 @@
 
 menuconfig NVM
 	bool "Open-Channel SSD target support"
-	depends on BLOCK
+	depends on BLOCK && HAS_DMA
 	help
 	  Say Y here to get to enable Open-channel SSDs.
 
-- 
2.1.4