linux-kernel - [PATCH] ide-disk: set non-rotational queue flag for SSD and CF devices

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Date:	Sat, 18 Oct 2008 22:23:54 +0200
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	linux-ide@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] ide-disk: set non-rotational queue flag for SSD and CF devices

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
---
 drivers/ide/ide-disk.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

Index: b/drivers/ide/ide-disk.c
===================================================================
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -600,6 +600,7 @@ static int ide_disk_check(ide_drive_t *d
 static void ide_disk_setup(ide_drive_t *drive)
 {
 	struct ide_disk_obj *idkp = drive->driver_data;
+	struct request_queue *q = drive->queue;
 	ide_hwif_t *hwif = drive->hwif;
 	u16 *id = drive->id;
 	char *m = (char *)&id[ATA_ID_PROD];
@@ -626,11 +627,14 @@ static void ide_disk_setup(ide_drive_t *
 		if (max_s > hwif->rqsize)
 			max_s = hwif->rqsize;
 
-		blk_queue_max_sectors(drive->queue, max_s);
+		blk_queue_max_sectors(q, max_s);
 	}
 
 	printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name,
-			 drive->queue->max_sectors / 2);
+		q->max_sectors / 2);
+
+	if (ata_id_is_ssd(id) || ata_id_is_cfa(id))
+		queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
 
 	/* calculate drive capacity, and select LBA if possible */
 	ide_disk_get_capacity(drive);
--
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