libata: ATA_12/16 doesn't fall into ATAPI_MISC

SAT passthrus don't really fit into ATAPI_MISC class.  SAT passthru
commands always transfer multiple of 512 bytes and variable length
response is not allowed.  This patch creates a separate category -
ATAPI_PASS_THRU - for these.

This fixes HSM violation on "hdparm -I".

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index e9b69ba489d2..be95fdb69726 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -353,6 +353,11 @@ int atapi_cmd_type(u8 opcode)
         case GPCMD_READ_CD_MSF:
                 return ATAPI_READ_CD;
 
+        case ATA_16:
+        case ATA_12:
+                if (atapi_passthru16)
+                        return ATAPI_PASS_THRU;
+                /* fall thru */
         default:
                 return ATAPI_MISC;
         }