[PATCH] libata: separate out ata_id_major_version()

[powerpc.git] / include / linux / ata.h

diff --git a/include/linux/ata.h b/include/linux/ata.h
index a8155ca..b02a16c 100644 (file)
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -267,6 +267,16 @@ struct ata_taskfile {
          ((u64) (id)[(n) + 1] << 16) | \
          ((u64) (id)[(n) + 0]) )
 
+static inline unsigned int ata_id_major_version(const u16 *id)
+{
+       unsigned int mver;
+
+       for (mver = 14; mver >= 1; mver--)
+               if (id[ATA_ID_MAJOR_VER] & (1 << mver))
+                       break;
+       return mver;
+}
+
 static inline int ata_id_current_chs_valid(const u16 *id)
 {
        /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command