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authorBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2020-03-26 18:58:12 +0300
committerJens Axboe <axboe@kernel.dk>2020-03-26 19:28:19 +0300
commit6eab1bc0eecb541f4c383a0823902dc8f5d99861 (patch)
tree1f8cd4aa01eaa38e586e5473adfa372dda459793 /include/linux/libata.h
parent7fe183c773c42f9814cd361c45a0233f441bc4fc (diff)
downloadlinux-6eab1bc0eecb541f4c383a0823902dc8f5d99861.tar.xz
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.h24
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);