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libata: Protect DMA core code by #ifdef CONFIG_HAS_DMA
authorGeert Uytterhoeven <geert@linux-m68k.org>
Tue, 3 Jan 2017 18:09:49 +0000 (19:09 +0100)
committerTejun Heo <tj@kernel.org>
Fri, 6 Jan 2017 16:32:44 +0000 (11:32 -0500)
commit2874d5ee6c06ab72f2729968926b3d5ef8fca897
tree1f0157a5837d36d047311e1bab03b7732b965107tree | snapshot
parent6cf32ed9eee2d34db441ba6ebad3ec2d67952688commit | diff
libata: Protect DMA core code by #ifdef CONFIG_HAS_DMA

If NO_DMA=y:

    ERROR: "bad_dma_ops" [drivers/ata/libata.ko] undefined!

To fix this, protect the DMA code by #ifdef CONFIG_HAS_DMA, and provide
dummies of ata_sg_clean() and ata_sg_setup() for the !CONFIG_HAS_DMA
case.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
drivers/ata/libata-core.c diff | blob | history
Domain: System / Kernel;