diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
index 14a6198cb8d2b6ad3cf4635019a8f5caf8e5085b..27c48274e8cb11f1b26e2744699bdb4182116dae 100644
--- a/drivers/scsi/scsi_priv.h
+++ b/drivers/scsi/scsi_priv.h
@@ -26,12 +26,6 @@ struct Scsi_Host;
#define SCSI_SENSE_VALID(scmd) \
(((scmd)->sense_buffer[0] & 0x70) == 0x70)
-/*
- * Special value for scanning to specify scanning or rescanning of all
- * possible channels, (target) ids, or luns on a given shost.
- */
-#define SCAN_WILD_CARD ~0
-
/* hosts.c */
extern int scsi_init_hosts(void);
extern void scsi_exit_hosts(void);
diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c
index 1b5711e714a52b8251fb5b799dbbefd049f0e088..07be62bbaaeac049a37cfa82aefad75d877de14d 100644
--- a/drivers/scsi/scsi_proc.c
+++ b/drivers/scsi/scsi_proc.c
@@ -31,6 +31,7 @@
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
+#include <scsi/scsi_transport.h>
#include "scsi_priv.h"
#include "scsi_logging.h"
@@ -200,7 +201,10 @@ static int scsi_add_single_device(uint host, uint channel, uint id, uint lun)
if (IS_ERR(shost))
return PTR_ERR(shost);
- error = scsi_scan_host_selected(shost, channel, id, lun, 1);
+ if (shost->transportt->user_scan)
+ error = shost->transportt->user_scan(shost, channel, id, lun);
+ else
+ error = scsi_scan_host_selected(shost, channel, id, lun, 1);
scsi_host_put(shost);
return error;
}
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index edcd80b749c19825d8c04311479b74090a626583..752fb5da3de4f55e461c2b93d3e3e108a2b2a89d 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -334,19 +334,6 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
struct scsi_target *starget;
struct scsi_target *found_target;
- /*
- * Obtain the real parent from the transport. The transport
- * is allowed to fail (no error) if there is nothing at that
- * target id.
- */
- if (shost->transportt->target_parent) {
- spin_lock_irqsave(shost->host_lock, flags);
- parent = shost->transportt->target_parent(shost, channel, id);
- spin_unlock_irqrestore(shost->host_lock, flags);
- if (!parent)
- return NULL;
- }
-
starget = kmalloc(size, GFP_KERNEL);
if (!starget) {
printk(KERN_ERR "%s: allocation failure\n", __FUNCTION__);
@@ -1283,8 +1270,9 @@ struct scsi_device *__scsi_add_device(struct Scsi_Host *shost, uint channel,
struct scsi_device *sdev;
struct device *parent = &shost->shost_gendev;
int res;
- struct scsi_target *starget = scsi_alloc_target(parent, channel, id);
+ struct scsi_target *starget;
+ starget = scsi_alloc_target(parent, channel, id);
if (!starget)
return ERR_PTR(-ENOMEM);
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 2cb962751a7ee76bbbe7f503a41a390cbc3004a6..a77b32deaf8fdb732d45371a0eacf2c73a28d672 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -106,7 +106,10 @@ static int scsi_scan(struct Scsi_Host *shost, const char *str)
return -EINVAL;
if (check_set(&lun, s3))
return -EINVAL;
- res = scsi_scan_host_selected(shost, channel, id, lun, 1);
+ if (shost->transportt->user_scan)
+ res = shost->transportt->user_scan(shost, channel, id, lun);
+ else
+ res = scsi_scan_host_selected(shost, channel, id, lun, 1);
return res;
}
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 625f4a664d0601dd049a0ed2614ed959c4a1a055..f2c9acf11bd0c394084230718cfcbf48614d6e59 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -1093,17 +1093,23 @@ static int fc_rport_match(struct attribute_container *cont,
/*
* Must be called with shost->host_lock held
*/
-static struct device *fc_target_parent(struct Scsi_Host *shost,
- int channel, uint id)
+static int fc_user_scan(struct Scsi_Host *shost, uint channel,
+ uint id, uint lun)
{
struct fc_rport *rport;
- list_for_each_entry(rport, &fc_host_rports(shost), peers)
- if ((rport->channel == channel) &&
- (rport->scsi_target_id == id))
- return &rport->dev;
+ list_for_each_entry(rport, &fc_host_rports(shost), peers) {
+ if (rport->scsi_target_id == -1)
+ continue;
- return NULL;
+ if ((channel == SCAN_WILD_CARD || channel == rport->channel) &&
+ (id == SCAN_WILD_CARD || id == rport->scsi_target_id)) {
+ scsi_scan_target(&rport->dev, rport->channel,
+ rport->scsi_target_id, lun, 1);
+ }
+ }
+
+ return 0;
}
struct scsi_transport_template *
@@ -1142,7 +1148,7 @@ fc_attach_transport(struct fc_function_template *ft)
/* Transport uses the shost workq for scsi scanning */
i->t.create_work_queue = 1;
- i->t.target_parent = fc_target_parent;
+ i->t.user_scan = fc_user_scan;
/*
* Setup SCSI Target Attributes.
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index e950435a11d8d6bc264e04e16b354dae07d7a6ad..fb6641b42dfa2e8750690d8f3f4fdca2e808e129 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -29,6 +29,7 @@
#include <linux/slab.h>
#include <linux/string.h>
+#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport.h>
@@ -62,7 +63,7 @@ struct sas_internal {
struct sas_host_attrs {
struct list_head rphy_list;
- spinlock_t lock;
+ struct mutex lock;
u32 next_target_id;
};
#define to_sas_host_attrs(host) ((struct sas_host_attrs *)(host)->shost_data)
@@ -165,7 +166,7 @@ static int sas_host_setup(struct transport_container *tc, struct device *dev,
struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
INIT_LIST_HEAD(&sas_host->rphy_list);
- spin_lock_init(&sas_host->lock);
+ mutex_init(&sas_host->lock);
sas_host->next_target_id = 0;
return 0;
}
@@ -626,7 +627,7 @@ int sas_rphy_add(struct sas_rphy *rphy)
transport_add_device(&rphy->dev);
transport_configure_device(&rphy->dev);
- spin_lock(&sas_host->lock);
+ mutex_lock(&sas_host->lock);
list_add_tail(&rphy->list, &sas_host->rphy_list);
if (identify->device_type == SAS_END_DEVICE &&
(identify->target_port_protocols &
@@ -634,7 +635,7 @@ int sas_rphy_add(struct sas_rphy *rphy)
rphy->scsi_target_id = sas_host->next_target_id++;
else
rphy->scsi_target_id = -1;
- spin_unlock(&sas_host->lock);
+ mutex_unlock(&sas_host->lock);
if (rphy->scsi_target_id != -1) {
scsi_scan_target(&rphy->dev, parent->number,
@@ -661,9 +662,9 @@ void sas_rphy_free(struct sas_rphy *rphy)
struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
- spin_lock(&sas_host->lock);
+ mutex_lock(&sas_host->lock);
list_del(&rphy->list);
- spin_unlock(&sas_host->lock);
+ mutex_unlock(&sas_host->lock);
transport_destroy_device(&rphy->dev);
put_device(rphy->dev.parent);
@@ -703,9 +704,9 @@ sas_rphy_delete(struct sas_rphy *rphy)
device_del(dev);
transport_destroy_device(dev);
- spin_lock(&sas_host->lock);
+ mutex_lock(&sas_host->lock);
list_del(&rphy->list);
- spin_unlock(&sas_host->lock);
+ mutex_unlock(&sas_host->lock);
parent->rphy = NULL;
@@ -731,23 +732,28 @@ EXPORT_SYMBOL(scsi_is_sas_rphy);
* SCSI scan helper
*/
-static struct device *sas_target_parent(struct Scsi_Host *shost,
- int channel, uint id)
+static int sas_user_scan(struct Scsi_Host *shost, uint channel,
+ uint id, uint lun)
{
struct sas_host_attrs *sas_host = to_sas_host_attrs(shost);
struct sas_rphy *rphy;
- struct device *dev = NULL;
- spin_lock(&sas_host->lock);
+ mutex_lock(&sas_host->lock);
list_for_each_entry(rphy, &sas_host->rphy_list, list) {
struct sas_phy *parent = dev_to_phy(rphy->dev.parent);
- if (parent->number == channel &&
- rphy->scsi_target_id == id)
- dev = &rphy->dev;
+
+ if (rphy->scsi_target_id == -1)
+ continue;
+
+ if ((channel == SCAN_WILD_CARD || channel == parent->number) &&
+ (id == SCAN_WILD_CARD || id == rphy->scsi_target_id)) {
+ scsi_scan_target(&rphy->dev, parent->number,
+ rphy->scsi_target_id, lun, 1);
+ }
}
- spin_unlock(&sas_host->lock);
+ mutex_unlock(&sas_host->lock);
- return dev;
+ return 0;
}
@@ -792,7 +798,7 @@ sas_attach_transport(struct sas_function_template *ft)
return NULL;
memset(i, 0, sizeof(struct sas_internal));
- i->t.target_parent = sas_target_parent;
+ i->t.user_scan = sas_user_scan;
i->t.host_attrs.ac.attrs = &i->host_attrs[0];
i->t.host_attrs.ac.class = &sas_host_class.class;
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index 6cb1e2788d8bbeb701a5af243d19e622795087a4..c60b8ff2f5e4f5d7a2952a8fb0951a689ec451b1 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -31,6 +31,12 @@ extern const unsigned char scsi_command_size[8];
#define MAX_SCSI_DEVICE_CODE 15
extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE];
+/*
+ * Special value for scanning to specify scanning or rescanning of all
+ * possible channels, (target) ids, or luns on a given shost.
+ */
+#define SCAN_WILD_CARD ~0
+
/*
* SCSI opcodes
*/
diff --git a/include/scsi/scsi_transport.h b/include/scsi/scsi_transport.h
index f6e0bb484c63efb9194c8be4ce90bc7b5da0d482..e7b1054adf86b5d3d1003f3be9335d9c158ae18b 100644
--- a/include/scsi/scsi_transport.h
+++ b/include/scsi/scsi_transport.h
@@ -30,12 +30,9 @@ struct scsi_transport_template {
struct transport_container device_attrs;
/*
- * If set, call target_parent prior to allocating a scsi_target,
- * so we get the appropriate parent for the target. This function
- * is required for transports like FC and iSCSI that do not put the
- * scsi_target under scsi_host.
+ * If set, called from sysfs and legacy procfs rescanning code.
*/
- struct device *(*target_parent)(struct Scsi_Host *, int, uint);
+ int (*user_scan)(struct Scsi_Host *, uint, uint, uint);
/* The size of the specific transport attribute structure (a
* space of this size will be left at the end of the