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lightnvm: Simplify config when disabled

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We shouldn't compile an object file to get empty implementations;
conforms to linux coding style on conditional compilation.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Keith Busch 2015-11-28 16:49:22 +01:00 committed by Jens Axboe
parent 77032ca66f
commit c4699e70d1
3 changed files with 16 additions and 14 deletions
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3
drivers/nvme/host/Makefile
View File

@ -1,4 +1,5 @@
obj-$(CONFIG_BLK_DEV_NVME) += nvme.o
nvme-y += pci.o scsi.o lightnvm.o
lightnvm-$(CONFIG_NVM) := lightnvm.o
nvme-y += pci.o scsi.o $(lightnvm-y)

13
drivers/nvme/host/lightnvm.c
View File

@ -22,8 +22,6 @@
#include "nvme.h"
#ifdef CONFIG_NVM
#include <linux/nvme.h>
#include <linux/bitops.h>
#include <linux/lightnvm.h>
@ -588,14 +586,3 @@ int nvme_nvm_ns_supported(struct nvme_ns *ns, struct nvme_id_ns *id)
return 0;
}
#else
int nvme_nvm_register(struct request_queue *q, char *disk_name)
{
return 0;
}
void nvme_nvm_unregister(struct request_queue *q, char *disk_name) {};
int nvme_nvm_ns_supported(struct nvme_ns *ns, struct nvme_id_ns *id)
{
return 0;
}
#endif /* CONFIG_NVM */

14
drivers/nvme/host/nvme.h
View File

@ -136,8 +136,22 @@ int nvme_sg_io(struct nvme_ns *ns, struct sg_io_hdr __user *u_hdr);
int nvme_sg_io32(struct nvme_ns *ns, unsigned long arg);
int nvme_sg_get_version_num(int __user *ip);
#ifdef CONFIG_NVM
int nvme_nvm_ns_supported(struct nvme_ns *ns, struct nvme_id_ns *id);
int nvme_nvm_register(struct request_queue *q, char *disk_name);
void nvme_nvm_unregister(struct request_queue *q, char *disk_name);
#else
static inline int nvme_nvm_register(struct request_queue *q, char *disk_name)
{
return 0;
}
static inline void nvme_nvm_unregister(struct request_queue *q, char *disk_name) {};
static inline int nvme_nvm_ns_supported(struct nvme_ns *ns, struct nvme_id_ns *id)
{
return 0;
}
#endif /* CONFIG_NVM */
#endif /* _NVME_H */