linux-kernel - [PATCH v5 22/27] ata: move sata_deb_timing

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Date:   Thu, 26 Mar 2020 16:58:17 +0100
From:   Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Michael Schmitz <schmitzmic@...il.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Christoph Hellwig <hch@....de>, linux-ide@...r.kernel.org,
        linux-m68k@...ts.linux-m68k.org, linux-kernel@...r.kernel.org,
        b.zolnierkie@...sung.com
Subject: [PATCH v5 22/27] ata: move sata_deb_timing_*() to libata-sata.c

* move sata_deb_timing_*() to libata-sata.c

* add static inline for sata_ehc_deb_timing() for
  CONFIG_SATA_HOST=n case

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  32158     572      40   32770    8002 drivers/ata/libata-core.o
after:
  32015     572      40   32627    7f73 drivers/ata/libata-core.o

Reviewed-by: Christoph Hellwig <hch@....de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
---
 drivers/ata/libata-core.c |  8 --------
 drivers/ata/libata-sata.c |  8 ++++++++
 include/linux/libata.h    | 31 ++++++++++++++++++-------------
 3 files changed, 26 insertions(+), 21 deletions(-)

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 2ef0960b2154..20c22dbc1f24 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -65,14 +65,6 @@
 #include "libata.h"
 #include "libata-transport.h"
 
-/* debounce timing parameters in msecs { interval, duration, timeout } */
-const unsigned long sata_deb_timing_normal[]		= {   5,  100, 2000 };
-EXPORT_SYMBOL_GPL(sata_deb_timing_normal);
-const unsigned long sata_deb_timing_hotplug[]		= {  25,  500, 2000 };
-EXPORT_SYMBOL_GPL(sata_deb_timing_hotplug);
-const unsigned long sata_deb_timing_long[]		= { 100, 2000, 5000 };
-EXPORT_SYMBOL_GPL(sata_deb_timing_long);
-
 const struct ata_port_operations ata_base_port_ops = {
 	.prereset		= ata_std_prereset,
 	.postreset		= ata_std_postreset,
diff --git a/drivers/ata/libata-sata.c b/drivers/ata/libata-sata.c
index 849582e0d653..f3ad4aca5d09 100644
--- a/drivers/ata/libata-sata.c
+++ b/drivers/ata/libata-sata.c
@@ -12,6 +12,14 @@
 
 #include "libata.h"
 
+/* debounce timing parameters in msecs { interval, duration, timeout } */
+const unsigned long sata_deb_timing_normal[]		= {   5,  100, 2000 };
+EXPORT_SYMBOL_GPL(sata_deb_timing_normal);
+const unsigned long sata_deb_timing_hotplug[]		= {  25,  500, 2000 };
+EXPORT_SYMBOL_GPL(sata_deb_timing_hotplug);
+const unsigned long sata_deb_timing_long[]		= { 100, 2000, 5000 };
+EXPORT_SYMBOL_GPL(sata_deb_timing_long);
+
 /**
  *	sata_scr_valid - test whether SCRs are accessible
  *	@link: ATA link to test SCR accessibility for
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 08fec96a6a1e..90c929b5df3d 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1019,10 +1019,6 @@ struct ata_timing {
 /*
  * Core layer - drivers/ata/libata-core.c
  */
-extern const unsigned long sata_deb_timing_normal[];
-extern const unsigned long sata_deb_timing_hotplug[];
-extern const unsigned long sata_deb_timing_long[];
-
 extern struct ata_port_operations ata_dummy_port_ops;
 extern const struct ata_port_info ata_dummy_port_info;
 
@@ -1060,15 +1056,6 @@ static inline int is_multi_taskfile(struct ata_taskfile *tf)
 	       (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
 }
 
-static inline const unsigned long *
-sata_ehc_deb_timing(struct ata_eh_context *ehc)
-{
-	if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
-		return sata_deb_timing_hotplug;
-	else
-		return sata_deb_timing_normal;
-}
-
 static inline int ata_port_is_dummy(struct ata_port *ap)
 {
 	return ap->ops == &ata_dummy_port_ops;
@@ -1181,6 +1168,19 @@ 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 const unsigned long sata_deb_timing_normal[];
+extern const unsigned long sata_deb_timing_hotplug[];
+extern const unsigned long sata_deb_timing_long[];
+
+static inline const unsigned long *
+sata_ehc_deb_timing(struct ata_eh_context *ehc)
+{
+	if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
+		return sata_deb_timing_hotplug;
+	else
+		return sata_deb_timing_normal;
+}
+
 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);
@@ -1192,6 +1192,11 @@ extern int sata_link_hardreset(struct ata_link *link,
 extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
 			    unsigned long deadline);
 #else
+static inline const unsigned long *
+sata_ehc_deb_timing(struct ata_eh_context *ehc)
+{
+	return NULL;
+}
 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)
 {
-- 
2.24.1