Hello.
On 04-03-2011 11:55, Hannes Reinecke wrote:
As per SAT-3 the WWN ID should be included in the VPD page 0x83
(device identification) emulation.
Signed-off-by: Hannes Reinecke<hare@xxxxxxx>
[...]
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 0c4929f..f62463e 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
[...]
@@ -815,6 +817,13 @@ static inline int ata_id_has_unload(const u16 *id)
return 0;
}
+static inline int ata_id_has_wwn(const u16 *id)
+{
+ if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
+ return 0;
+ return id[ATA_ID_CSF_DEFAULT] & (1 << 8);
Could be compacted to:
return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100;
WBR, Sergei
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