ata: remove unused helper ata_id_flush_ext_enabled()

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_ext_enabled().

ata_id_has_flush_ext() is left unmodified, since this extra supported bit
(Bit 13 of word 86) is simply a copy of the bit that ata_id_has_flush_ext()
already checks (Bit 13 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>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>

diff --git a/include/linux/ata.h b/include/linux/ata.h
index b32d62542e26c206f7df7673358eac54894194dd..0c18499f60b6ef8c2e7b05861b92f76b386a338c 100644 (file)
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -622,19 +622,6 @@ static inline bool ata_id_has_flush_ext(const u16 *id)
        return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
 }
 
-static inline bool ata_id_flush_ext_enabled(const u16 *id)
-{
-       if (ata_id_has_flush_ext(id) == 0)
-               return false;
-       if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
-               return false;
-       /*
-        * some Maxtor disks have bit 13 defined incorrectly
-        * so check bit 10 too
-        */
-       return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
-}
-
 static inline u32 ata_id_logical_sector_size(const u16 *id)
 {
        /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.