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| author | brking@charter.net <brking@charter.net> | 2006-07-06 00:00:01 +0200 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-07-28 20:48:14 +0200 |
| commit | f4c8aa1107969c26b1984eb2996a58f816dea71f (patch) | |
| tree | 7929bd06154bcfedd8de71674567018685174d45 | |
| parent | [PATCH] fix compile regression for a few scsi drivers (diff) | |
| download | linux-f4c8aa1107969c26b1984eb2996a58f816dea71f.tar.xz linux-f4c8aa1107969c26b1984eb2996a58f816dea71f.zip | |
[SCSI] megaraid: Add support for change_queue_depth
Adds support for change_queue_depth so that device
queue depth can be changed at runtime through sysfs.
Signed-off-by: <brking@charter.net>
Acked-by: Seokmann Ju <seokmann.ju@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_mbox.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c index 92715130ac09..7ae580f17e64 100644 --- a/drivers/scsi/megaraid/megaraid_mbox.c +++ b/drivers/scsi/megaraid/megaraid_mbox.c @@ -330,6 +330,21 @@ static struct device_attribute *megaraid_sdev_attrs[] = { NULL, }; +/** + * megaraid_change_queue_depth - Change the device's queue depth + * @sdev: scsi device struct + * @qdepth: depth to set + * + * Return value: + * actual depth set + **/ +static int megaraid_change_queue_depth(struct scsi_device *sdev, int qdepth) +{ + if (qdepth > MBOX_MAX_SCSI_CMDS) + qdepth = MBOX_MAX_SCSI_CMDS; + scsi_adjust_queue_depth(sdev, 0, qdepth); + return sdev->queue_depth; +} /* * Scsi host template for megaraid unified driver @@ -343,6 +358,7 @@ static struct scsi_host_template megaraid_template_g = { .eh_device_reset_handler = megaraid_reset_handler, .eh_bus_reset_handler = megaraid_reset_handler, .eh_host_reset_handler = megaraid_reset_handler, + .change_queue_depth = megaraid_change_queue_depth, .use_clustering = ENABLE_CLUSTERING, .sdev_attrs = megaraid_sdev_attrs, .shost_attrs = megaraid_shost_attrs, |