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authorJens Axboe <jens.axboe@oracle.com>2008-09-24 13:05:10 +0200
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 08:56:19 +0200
commit8bff7c6b0f63c7ee9c5e3a076338d74125b8debb (patch)
tree0863c7e0d09592ee9f4d568625348ef12e4a30df /drivers
parenta68bbddba486020c9c74825ce90c4c1ec463e0e8 (diff)
libata: set queue SSD flag for SSD devices
SSD devices should give an RPM setting of 1 in word 217 of the ID page. If we see such a device, tell the block layer about it. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/ata/libata-scsi.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index b9d3ba423cb..054370700ab 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -977,6 +977,10 @@ static int ata_scsi_dev_config(struct scsi_device *sdev,
blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN);
} else {
+ if (ata_id_is_ssd(dev->id))
+ queue_flag_set_unlocked(QUEUE_FLAG_NONROT,
+ sdev->request_queue);
+
/* ATA devices must be sector aligned */
blk_queue_update_dma_alignment(sdev->request_queue,
ATA_SECT_SIZE - 1);