1 files changed, 30 insertions, 8 deletions

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 2733b0c90b75..342316064e9f 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -313,7 +313,7 @@ ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr,
                 return ap->ops->em_show(ap, buf);
         return -EINVAL;
 }
-DEVICE_ATTR(em_message, S_IRUGO | S_IWUGO,
+DEVICE_ATTR(em_message, S_IRUGO | S_IWUSR,
                 ata_scsi_em_message_show, ata_scsi_em_message_store);
 EXPORT_SYMBOL_GPL(dev_attr_em_message);
 
@@ -366,7 +366,7 @@ ata_scsi_activity_store(struct device *dev, struct device_attribute *attr,
         }
         return -EINVAL;
 }
-DEVICE_ATTR(sw_activity, S_IWUGO | S_IRUGO, ata_scsi_activity_show,
+DEVICE_ATTR(sw_activity, S_IWUSR | S_IRUGO, ata_scsi_activity_show,
                         ata_scsi_activity_store);
 EXPORT_SYMBOL_GPL(dev_attr_sw_activity);
 
@@ -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;
 }
@@ -2376,7 +2377,23 @@ saving_not_supp:
  */
 static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf)
 {
-        u64 last_lba = args->dev->n_sectors - 1; /* LBA of the last block */
+        struct ata_device *dev = args->dev;
+        u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */
+        u8 log_per_phys = 0;
+        u16 lowest_aligned = 0;
+        u16 word_106 = dev->id[106];
+        u16 word_209 = dev->id[209];
+
+        if ((word_106 & 0xc000) == 0x4000) {
+                /* Number and offset of logical sectors per physical sector */
+                if (word_106 & (1 << 13))
+                        log_per_phys = word_106 & 0xf;
+                if ((word_209 & 0xc000) == 0x4000) {
+                        u16 first = dev->id[209] & 0x3fff;
+                        if (first > 0)
+                                lowest_aligned = (1 << log_per_phys) - first;
+                }
+        }
 
         VPRINTK("ENTER\n");
 
@@ -2407,6 +2424,11 @@ static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf)
                 /* sector size */
                 rbuf[10] = ATA_SECT_SIZE >> 8;
                 rbuf[11] = ATA_SECT_SIZE & 0xff;
+
+                rbuf[12] = 0;
+                rbuf[13] = log_per_phys;
+                rbuf[14] = (lowest_aligned >> 8) & 0x3f;
+                rbuf[15] = lowest_aligned;
         }
 
         return 0;