@@ -87,6 +87,39 @@ void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf)
}
EXPORT_SYMBOL_GPL(ata_tf_from_fis);
+int ata_do_link_spd_horkage(struct ata_device *dev)
+{
+ struct ata_link *plink = ata_dev_phys_link(dev);
+ u32 target, target_limit;
+
+ if (!sata_scr_valid(plink))
+ return 0;
+
+ if (dev->horkage & ATA_HORKAGE_1_5_GBPS)
+ target = 1;
+ else
+ return 0;
+
+ target_limit = (1 << target) - 1;
+
+ /* if already on stricter limit, no need to push further */
+ if (plink->sata_spd_limit <= target_limit)
+ return 0;
+
+ plink->sata_spd_limit = target_limit;
+
+ /* Request another EH round by returning -EAGAIN if link is
+ * going faster than the target speed. Forward progress is
+ * guaranteed by setting sata_spd_limit to target_limit above.
+ */
+ if (plink->sata_spd > target) {
+ ata_dev_info(dev, "applying link speed limit horkage to %s\n",
+ sata_spd_string(target));
+ return -EAGAIN;
+ }
+ return 0;
+}
+
/**
* sata_link_scr_lpm - manipulate SControl IPM and SPM fields
* @link: ATA link to manipulate SControl for
@@ -2074,39 +2074,6 @@ static bool ata_identify_page_supported(struct ata_device *dev, u8 page)
return false;
}
-static int ata_do_link_spd_horkage(struct ata_device *dev)
-{
- struct ata_link *plink = ata_dev_phys_link(dev);
- u32 target, target_limit;
-
- if (!sata_scr_valid(plink))
- return 0;
-
- if (dev->horkage & ATA_HORKAGE_1_5_GBPS)
- target = 1;
- else
- return 0;
-
- target_limit = (1 << target) - 1;
-
- /* if already on stricter limit, no need to push further */
- if (plink->sata_spd_limit <= target_limit)
- return 0;
-
- plink->sata_spd_limit = target_limit;
-
- /* Request another EH round by returning -EAGAIN if link is
- * going faster than the target speed. Forward progress is
- * guaranteed by setting sata_spd_limit to target_limit above.
- */
- if (plink->sata_spd > target) {
- ata_dev_info(dev, "applying link speed limit horkage to %s\n",
- sata_spd_string(target));
- return -EAGAIN;
- }
- return 0;
-}
-
static inline u8 ata_dev_knobble(struct ata_device *dev)
{
struct ata_port *ap = dev->link->ap;
@@ -87,6 +87,13 @@ extern unsigned int ata_read_log_page(struct ata_device *dev, u8 log,
#define to_ata_port(d) container_of(d, struct ata_port, tdev)
+/* libata-core-sata.c */
+#ifdef CONFIG_SATA_HOST
+int ata_do_link_spd_horkage(struct ata_device *dev);
+#else
+static inline int ata_do_link_spd_horkage(struct ata_device *dev) { return 0; }
+#endif
+
/* libata-acpi.c */
#ifdef CONFIG_ATA_ACPI
extern unsigned int ata_acpi_gtf_filter;
* move ata_do_link_spd_horkage() to libata-core-sata.c * add static inline for CONFIG_SATA_HOST=n case Code size savings on m68k arch using atari_defconfig: text data bss dec hex filename before: 36762 572 40 37374 91fe drivers/ata/libata-core.o after: 36627 572 40 37239 9177 drivers/ata/libata-core.o Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> --- drivers/ata/libata-core-sata.c | 33 +++++++++++++++++++++++++++++++++ drivers/ata/libata-core.c | 33 --------------------------------- drivers/ata/libata.h | 7 +++++++ 3 files changed, 40 insertions(+), 33 deletions(-)