From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Subject: [PATCH v2 5/5] scsi: Add NO_DMA dummies for SCSI DMA mapping API Date: Fri, 16 Mar 2018 14:25:44 +0100 Message-ID: <1521206744-1504-6-git-send-email-geert@linux-m68k.org> References: <1521206744-1504-1-git-send-email-geert@linux-m68k.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1521206744-1504-1-git-send-email-geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Christoph Hellwig , Marek Szyprowski , Robin Murphy , Felipe Balbi , Greg Kroah-Hartman , "James E . J . Bottomley" , "Martin K . Petersen" , Andrew Morton Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Geert Uytterhoeven , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-scsi@vger.kernel.org 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 Reviewed-by: Mark Brown Acked-by: Robin Murphy --- v2: - Add Reviewed-by, Acked-by, - Drop RFC state. --- include/scsi/scsi_cmnd.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h index 2280b2351739572c..aaf1e971c6a368d1 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) { -- 2.7.4