summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/scsi_scan.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/scsi_scan.c')
-rw-r--r--drivers/scsi/scsi_scan.c74
1 files changed, 41 insertions, 33 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index ffd7e7e729..8300fc28cb 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -227,7 +227,7 @@ static int scsi_realloc_sdev_budget_map(struct scsi_device *sdev,
/*
* realloc if new shift is calculated, which is caused by setting
- * up one new default queue depth after calling ->slave_configure
+ * up one new default queue depth after calling ->device_configure
*/
if (!need_alloc && new_shift != sdev->budget_map.shift)
need_alloc = need_free = true;
@@ -283,6 +283,7 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
struct request_queue *q;
int display_failure_msg = 1, ret;
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+ struct queue_limits lim;
sdev = kzalloc(sizeof(*sdev) + shost->transportt->device_size,
GFP_KERNEL);
@@ -332,7 +333,8 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
sdev->sg_reserved_size = INT_MAX;
- q = blk_mq_alloc_queue(&sdev->host->tag_set, NULL, NULL);
+ scsi_init_limits(shost, &lim);
+ q = blk_mq_alloc_queue(&sdev->host->tag_set, &lim, NULL);
if (IS_ERR(q)) {
/* release fn is set up in scsi_sysfs_device_initialise, so
* have to free and put manually here */
@@ -343,7 +345,6 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
kref_get(&sdev->host->tagset_refcnt);
sdev->request_queue = q;
q->queuedata = sdev;
- __scsi_init_queue(sdev->host, q);
depth = sdev->host->cmd_per_lun ?: 1;
@@ -873,6 +874,8 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result,
static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
blist_flags_t *bflags, int async)
{
+ const struct scsi_host_template *hostt = sdev->host->hostt;
+ struct queue_limits lim;
int ret;
/*
@@ -1004,19 +1007,6 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
sdev->select_no_atn = 1;
/*
- * Maximum 512 sector transfer length
- * broken RA4x00 Compaq Disk Array
- */
- if (*bflags & BLIST_MAX_512)
- blk_queue_max_hw_sectors(sdev->request_queue, 512);
- /*
- * Max 1024 sector transfer length for targets that report incorrect
- * max/optimal lengths and relied on the old block layer safe default
- */
- else if (*bflags & BLIST_MAX_1024)
- blk_queue_max_hw_sectors(sdev->request_queue, 1024);
-
- /*
* Some devices may not want to have a start command automatically
* issued when a device is added.
*/
@@ -1076,28 +1066,46 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
transport_configure_device(&sdev->sdev_gendev);
- if (sdev->host->hostt->slave_configure) {
- ret = sdev->host->hostt->slave_configure(sdev);
- if (ret) {
- /*
- * if LLDD reports slave not present, don't clutter
- * console with alloc failure messages
- */
- if (ret != -ENXIO) {
- sdev_printk(KERN_ERR, sdev,
- "failed to configure device\n");
- }
- return SCSI_SCAN_NO_RESPONSE;
- }
+ /*
+ * No need to freeze the queue as it isn't reachable to anyone else yet.
+ */
+ lim = queue_limits_start_update(sdev->request_queue);
+ if (*bflags & BLIST_MAX_512)
+ lim.max_hw_sectors = 512;
+ else if (*bflags & BLIST_MAX_1024)
+ lim.max_hw_sectors = 1024;
+ if (hostt->device_configure)
+ ret = hostt->device_configure(sdev, &lim);
+ else if (hostt->slave_configure)
+ ret = hostt->slave_configure(sdev);
+ if (ret) {
+ queue_limits_cancel_update(sdev->request_queue);
/*
- * The queue_depth is often changed in ->slave_configure.
- * Set up budget map again since memory consumption of
- * the map depends on actual queue depth.
+ * If the LLDD reports device not present, don't clutter the
+ * console with failure messages.
*/
- scsi_realloc_sdev_budget_map(sdev, sdev->queue_depth);
+ if (ret != -ENXIO)
+ sdev_printk(KERN_ERR, sdev,
+ "failed to configure device\n");
+ return SCSI_SCAN_NO_RESPONSE;
}
+ ret = queue_limits_commit_update(sdev->request_queue, &lim);
+ if (ret) {
+ sdev_printk(KERN_ERR, sdev, "failed to apply queue limits.\n");
+ return SCSI_SCAN_NO_RESPONSE;
+ }
+
+ /*
+ * The queue_depth is often changed in ->device_configure.
+ *
+ * Set up budget map again since memory consumption of the map depends
+ * on actual queue depth.
+ */
+ if (hostt->device_configure || hostt->slave_configure)
+ scsi_realloc_sdev_budget_map(sdev, sdev->queue_depth);
+
if (sdev->scsi_level >= SCSI_3)
scsi_attach_vpd(sdev);