Revert "libata: Implement support for sense data reporting"

This reverts commit fe7173c206de63fc28475ee6ae42ff95c05692de.

As implemented, ACS-4 sense reporting for ATA devices bypasses error
diagnosis and handling in libata degrading EH behavior significantly.
Revert the related changes for now.

ATA_ID_COMMAND_SET_3/4 constants are not reverted as they're used by
later changes.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Hannes Reinecke <hare@suse.de>
Cc: stable@vger.kernel.org #v4.1+

1 files changed, 0 insertions, 16 deletions

diff --git a/include/linux/ata.h b/include/linux/ata.h
index 6c78956aa470..0e6a782575b5 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -385,8 +385,6 @@ enum {
         SATA_SSP                = 0x06, /* Software Settings Preservation */
         SATA_DEVSLP             = 0x09, /* Device Sleep */
 
-        SETFEATURE_SENSE_DATA = 0xC3, /* Sense Data Reporting feature */
-
         /* feature values for SET_MAX */
         ATA_SET_MAX_ADDR        = 0x00,
         ATA_SET_MAX_PASSWD      = 0x01,
@@ -720,20 +718,6 @@ static inline bool ata_id_has_read_log_dma_ext(const u16 *id)
         return false;
 }
 
-static inline bool ata_id_has_sense_reporting(const u16 *id)
-{
-        if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
-                return false;
-        return id[ATA_ID_COMMAND_SET_3] & (1 << 6);
-}
-
-static inline bool ata_id_sense_reporting_enabled(const u16 *id)
-{
-        if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
-                return false;
-        return id[ATA_ID_COMMAND_SET_4] & (1 << 6);
-}
-
 /**
  *      ata_id_major_version    -       get ATA level of drive
  *      @id: Identify data