diff options
| author | Geert Uytterhoeven <geert@linux-m68k.org> | 2018-03-16 16:25:44 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-03-16 21:58:28 +0300 |
| commit | bff739b6559e2fcec37cd0465c7aa37663f4baeb (patch) | |
| tree | b93dd685f674fead91c6506a4183d94d2119fb9e /include | |
| parent | c1ce6c2beea38171a57c56e55875318cef9a2ad5 (diff) | |
| download | linux-bff739b6559e2fcec37cd0465c7aa37663f4baeb.tar.xz | |
scsi: Add NO_DMA dummies for SCSI DMA mapping API
Add dummies for scsi_dma_{,un}map(), to allow compile-testing if
NO_DMA=y.
This prevents the following from showing up later:
ERROR: "scsi_dma_unmap" [drivers/firewire/firewire-sbp2.ko] undefined!
ERROR: "scsi_dma_map" [drivers/firewire/firewire-sbp2.ko] undefined!
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/scsi/scsi_cmnd.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index 2280b2351739..aaf1e971c6a3 100644 --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -174,8 +174,13 @@ extern void scsi_kunmap_atomic_sg(void *virt); extern int scsi_init_io(struct scsi_cmnd *cmd); +#ifdef CONFIG_SCSI_DMA extern int scsi_dma_map(struct scsi_cmnd *cmd); extern void scsi_dma_unmap(struct scsi_cmnd *cmd); +#else /* !CONFIG_SCSI_DMA */ +static inline int scsi_dma_map(struct scsi_cmnd *cmd) { return -ENOSYS; } +static inline void scsi_dma_unmap(struct scsi_cmnd *cmd) { } +#endif /* !CONFIG_SCSI_DMA */ static inline unsigned scsi_sg_count(struct scsi_cmnd *cmd) { |