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[2/3] ata: remove unused helper ata_id_flush_enabled()

Message ID 20221018191055.2367325-2-niklas.cassel@wdc.com
State New
Headers show
Series [1/3] ata: remove unused helper ata_id_lba48_enabled() | expand

Commit Message

Niklas Cassel Oct. 18, 2022, 7:10 p.m. UTC
Not only is this function unused, but even worse, the bit it is checking
is actually used for signaling if the feature is supported, not enabled.
Therefore, remove the unused helper function ata_id_flush_enabled().

ata_id_has_flush() is left unmodified, since this extra supported bit
(Bit 12 of word 86) is simply a copy of the bit that ata_id_has_flush()
already checks (Bit 12 of word 83), see ACS-5 r10:
7.13.6.41 Words 85..87, 120: Commands and feature sets supported or enabled

Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
---
 include/linux/ata.h | 9 ---------
 1 file changed, 9 deletions(-)
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Patch

diff --git a/include/linux/ata.h b/include/linux/ata.h
index c04aca58448a..b32d62542e26 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -615,15 +615,6 @@  static inline bool ata_id_has_flush(const u16 *id)
 	return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
 }
 
-static inline bool ata_id_flush_enabled(const u16 *id)
-{
-	if (ata_id_has_flush(id) == 0)
-		return false;
-	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
-		return false;
-	return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
-}
-
 static inline bool ata_id_has_flush_ext(const u16 *id)
 {
 	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)