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author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2020-03-26 16:58:12 +0100 |
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committer | Jens Axboe <axboe@kernel.dk> | 2020-03-26 10:28:19 -0600 |
commit | 6eab1bc0eecb541f4c383a0823902dc8f5d99861 (patch) | |
tree | 1f8cd4aa01eaa38e586e5473adfa372dda459793 /drivers/ata/libata-core.c | |
parent | 7fe183c773c42f9814cd361c45a0233f441bc4fc (diff) | |
download | linux-stable-6eab1bc0eecb541f4c383a0823902dc8f5d99861.tar.gz linux-stable-6eab1bc0eecb541f4c383a0823902dc8f5d99861.tar.bz2 linux-stable-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 'drivers/ata/libata-core.c')
-rw-r--r-- | drivers/ata/libata-core.c | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index b4a952dce7ab..ba1e5c4d3c09 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5216,115 +5216,6 @@ err: } /** - * sata_scr_valid - test whether SCRs are accessible - * @link: ATA link to test SCR accessibility for - * - * Test whether SCRs are accessible for @link. - * - * LOCKING: - * None. - * - * RETURNS: - * 1 if SCRs are accessible, 0 otherwise. - */ -int sata_scr_valid(struct ata_link *link) -{ - struct ata_port *ap = link->ap; - - return (ap->flags & ATA_FLAG_SATA) && ap->ops->scr_read; -} -EXPORT_SYMBOL_GPL(sata_scr_valid); - -/** - * sata_scr_read - read SCR register of the specified port - * @link: ATA link to read SCR for - * @reg: SCR to read - * @val: Place to store read value - * - * Read SCR register @reg of @link into *@val. This function is - * guaranteed to succeed if @link is ap->link, the cable type of - * the port is SATA and the port implements ->scr_read. - * - * LOCKING: - * None if @link is ap->link. Kernel thread context otherwise. - * - * RETURNS: - * 0 on success, negative errno on failure. - */ -int sata_scr_read(struct ata_link *link, int reg, u32 *val) -{ - if (ata_is_host_link(link)) { - if (sata_scr_valid(link)) - return link->ap->ops->scr_read(link, reg, val); - return -EOPNOTSUPP; - } - - return sata_pmp_scr_read(link, reg, val); -} -EXPORT_SYMBOL_GPL(sata_scr_read); - -/** - * sata_scr_write - write SCR register of the specified port - * @link: ATA link to write SCR for - * @reg: SCR to write - * @val: value to write - * - * Write @val to SCR register @reg of @link. This function is - * guaranteed to succeed if @link is ap->link, the cable type of - * the port is SATA and the port implements ->scr_read. - * - * LOCKING: - * None if @link is ap->link. Kernel thread context otherwise. - * - * RETURNS: - * 0 on success, negative errno on failure. - */ -int sata_scr_write(struct ata_link *link, int reg, u32 val) -{ - if (ata_is_host_link(link)) { - if (sata_scr_valid(link)) - return link->ap->ops->scr_write(link, reg, val); - return -EOPNOTSUPP; - } - - return sata_pmp_scr_write(link, reg, val); -} -EXPORT_SYMBOL_GPL(sata_scr_write); - -/** - * sata_scr_write_flush - write SCR register of the specified port and flush - * @link: ATA link to write SCR for - * @reg: SCR to write - * @val: value to write - * - * This function is identical to sata_scr_write() except that this - * function performs flush after writing to the register. - * - * LOCKING: - * None if @link is ap->link. Kernel thread context otherwise. - * - * RETURNS: - * 0 on success, negative errno on failure. - */ -int sata_scr_write_flush(struct ata_link *link, int reg, u32 val) -{ - if (ata_is_host_link(link)) { - int rc; - - if (sata_scr_valid(link)) { - rc = link->ap->ops->scr_write(link, reg, val); - if (rc == 0) - rc = link->ap->ops->scr_read(link, reg, &val); - return rc; - } - return -EOPNOTSUPP; - } - - return sata_pmp_scr_write(link, reg, val); -} -EXPORT_SYMBOL_GPL(sata_scr_write_flush); - -/** * ata_phys_link_online - test whether the given link is online * @link: ATA link to test * |