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-rw-r--r--drivers/ata/libata-scsi.c11
-rw-r--r--include/linux/ata.h28
2 files changed, 34 insertions, 5 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index d1718a1f278a..342316064e9f 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -2142,13 +2142,14 @@ static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf)
static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf)
{
+ int form_factor = ata_id_form_factor(args->id);
+ int media_rotation_rate = ata_id_rotation_rate(args->id);
+
rbuf[1] = 0xb1;
rbuf[3] = 0x3c;
- if (ata_id_major_version(args->id) > 7) {
- rbuf[4] = args->id[217] >> 8;
- rbuf[5] = args->id[217];
- rbuf[7] = args->id[168] & 0xf;
- }
+ rbuf[4] = media_rotation_rate >> 8;
+ rbuf[5] = media_rotation_rate;
+ rbuf[7] = form_factor;
return 0;
}
diff --git a/include/linux/ata.h b/include/linux/ata.h
index cb79b7a208e1..915da43edee1 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -730,6 +730,34 @@ static inline int ata_id_has_unload(const u16 *id)
return 0;
}
+static inline int ata_id_form_factor(const u16 *id)
+{
+ u16 val = id[168];
+
+ if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
+ return 0;
+
+ val &= 0xf;
+
+ if (val > 5)
+ return 0;
+
+ return val;
+}
+
+static inline int ata_id_rotation_rate(const u16 *id)
+{
+ u16 val = id[217];
+
+ if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
+ return 0;
+
+ if (val > 1 && val < 0x401)
+ return 0;
+
+ return val;
+}
+
static inline int ata_id_has_trim(const u16 *id)
{
if (ata_id_major_version(id) >= 7 &&