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| author |   Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2020-03-26 16:58:12 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2020-03-26 10:28:19 -0600 |
| commit | 6eab1bc0eecb541f4c383a0823902dc8f5d99861 (patch) | |
| tree | 1f8cd4aa01eaa38e586e5473adfa372dda459793 /include/linux/libata.h | |
| parent | ata: start separating SATA specific code from libata-core.c (diff) | |
| download | linux-dev-6eab1bc0eecb541f4c383a0823902dc8f5d99861.tar.xz linux-dev-6eab1bc0eecb541f4c383a0823902dc8f5d99861.zip | |
ata: move sata_scr_*() to libata-sata.c
* move sata_scr_*() to libata-sata.c
* add static inlines for CONFIG_SATA_HOST=n case
Code size savings on m68k arch using (modified) atari_defconfig:
text data bss dec hex filename
before:
35642 572 40 36254 8d9e drivers/ata/libata-core.o
16607 18 0 16625 40f1 drivers/ata/libata-eh.o
after:
32846 572 40 33458 82b2 drivers/ata/libata-core.o
16243 18 0 16261 3f85 drivers/ata/libata-eh.o
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/libata.h')
| -rw-r--r-- | include/linux/libata.h | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index b419d7412f71..86703ce5a33e 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1125,10 +1125,6 @@ extern void ata_sas_tport_delete(struct ata_port *ap); extern void ata_sas_port_stop(struct ata_port *ap); extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *); extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap); -extern int sata_scr_valid(struct ata_link *link); -extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); -extern int sata_scr_write(struct ata_link *link, int reg, u32 val); -extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); extern bool ata_link_online(struct ata_link *link); extern bool ata_link_offline(struct ata_link *link); #ifdef CONFIG_PM @@ -1193,6 +1189,26 @@ extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port * /* * SATA specific code - drivers/ata/libata-sata.c */ +#ifdef CONFIG_SATA_HOST +extern int sata_scr_valid(struct ata_link *link); +extern int sata_scr_read(struct ata_link *link, int reg, u32 *val); +extern int sata_scr_write(struct ata_link *link, int reg, u32 val); +extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); +#else +static inline int sata_scr_valid(struct ata_link *link) { return 0; } +static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val) +{ + return -EOPNOTSUPP; +} +static inline int sata_scr_write(struct ata_link *link, int reg, u32 val) +{ + return -EOPNOTSUPP; +} +static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val) +{ + return -EOPNOTSUPP; +} +#endif extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, bool spm_wakeup); extern int ata_slave_link_init(struct ata_port *ap); |