ahcid: fix atapi capacity detection

2018-03-11 18:24:23 -07:00
parent a081f9e2ff
commit d893a73e1e
1 changed files with 2 additions and 1 deletions
@@ -63,7 +63,8 @@ impl DiskATAPI {
        cmd[0] = SCSI_READ_CAPACITY;
        self.port.packet(&cmd, 8, &mut self.clb, &mut self.ctbas, &mut self.buf)?;

-        let blk_count = BigEndian::read_u32(&self.buf[0..4]);
+        // Instead of a count, contains number of last LBA, so add 1
+        let blk_count = BigEndian::read_u32(&self.buf[0..4]) + 1;
        let blk_size = BigEndian::read_u32(&self.buf[4..8]);

        Ok((blk_count, blk_size))