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[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>
This commit is contained in:
James Bottomley 2008-01-20 09:09:40 -06:00
parent a0899d4df5
commit b30c2fc111
1 changed files with 4 additions and 0 deletions
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4
include/scsi/scsi_device.h
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@ -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) "*")