[SCSI] scsi.h: add macro for enclosure bit of inquiry data

The macro tells us whether the device is (or contains) an enclosure device.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 3c8f898b160e..ab7acbe80960 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -387,6 +387,10 @@ static inline int scsi_device_qas(struct scsi_device *sdev)
                 return 0;
         return sdev->inquiry[56] & 0x02;
 }
+static inline int scsi_device_enclosure(struct scsi_device *sdev)
+{
+        return sdev->inquiry[6] & (1<<6);
+}
 
 #define MODULE_ALIAS_SCSI_DEVICE(type) \
         MODULE_ALIAS("scsi:t-" __stringify(type) "*")