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Date: Wed, 28 Oct 2009 08:52:23 -0500
From: James Bottomley <James.Bottomley@...e.de>
To: Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-scsi <linux-scsi@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] SCSI bug fixes for 2.6.32-rc5
This is a SCSI memory leak fix (minor) and some zfcp fixes.
The patch is available here:
master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6.git
The short changelog is:
Christof Schmitt (4):
zfcp: Flush SCSI registration work when adding unit
zfcp: Fix timer initialization for ct and els requests
zfcp: Warn about storage devices with broken PLOGI data
zfcp: Handle WWPN mismatch in PLOGI payload
Heiko Carstens (1):
zfcp: fix kfree handling in zfcp_init_device_setup
James Bottomley (1):
fix memory leak in initialization
And the diffstat (full diff attached):
drivers/s390/scsi/zfcp_aux.c | 11 ++++++-----
drivers/s390/scsi/zfcp_erp.c | 22 ++++++++++------------
drivers/s390/scsi/zfcp_ext.h | 1 +
drivers/s390/scsi/zfcp_fc.c | 11 +++++++++++
drivers/s390/scsi/zfcp_fsf.c | 13 ++++++++++---
drivers/s390/scsi/zfcp_sysfs.c | 1 +
drivers/scsi/scsi_scan.c | 2 ++
drivers/scsi/scsi_sysfs.c | 7 ++-----
8 files changed, 43 insertions(+), 25 deletions(-)
James
---
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 0f79f3a..2889e5f 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -128,12 +128,13 @@ out_ccwdev:
static void __init zfcp_init_device_setup(char *devstr)
{
char *token;
- char *str;
+ char *str, *str_saved;
char busid[ZFCP_BUS_ID_SIZE];
u64 wwpn, lun;
/* duplicate devstr and keep the original for sysfs presentation*/
- str = kmalloc(strlen(devstr) + 1, GFP_KERNEL);
+ str_saved = kmalloc(strlen(devstr) + 1, GFP_KERNEL);
+ str = str_saved;
if (!str)
return;
@@ -152,12 +153,12 @@ static void __init zfcp_init_device_setup(char *devstr)
if (!token || strict_strtoull(token, 0, (unsigned long long *) &lun))
goto err_out;
- kfree(str);
+ kfree(str_saved);
zfcp_init_device_configure(busid, wwpn, lun);
return;
- err_out:
- kfree(str);
+err_out:
+ kfree(str_saved);
pr_err("%s is not a valid SCSI device\n", devstr);
}
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 73d366b..f73e218 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -858,10 +858,7 @@ static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act)
if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_PTP)
return zfcp_erp_open_ptp_port(act);
if (!port->d_id) {
- zfcp_port_get(port);
- if (!queue_work(adapter->work_queue,
- &port->gid_pn_work))
- zfcp_port_put(port);
+ zfcp_fc_trigger_did_lookup(port);
return ZFCP_ERP_EXIT;
}
return zfcp_erp_port_strategy_open_port(act);
@@ -869,12 +866,11 @@ static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act)
case ZFCP_ERP_STEP_PORT_OPENING:
/* D_ID might have changed during open */
if (p_status & ZFCP_STATUS_COMMON_OPEN) {
- if (port->d_id)
- return ZFCP_ERP_SUCCEEDED;
- else {
- act->step = ZFCP_ERP_STEP_PORT_CLOSING;
- return ZFCP_ERP_CONTINUES;
+ if (!port->d_id) {
+ zfcp_fc_trigger_did_lookup(port);
+ return ZFCP_ERP_EXIT;
}
+ return ZFCP_ERP_SUCCEEDED;
}
if (port->d_id && !(p_status & ZFCP_STATUS_COMMON_NOESC)) {
port->d_id = 0;
@@ -889,19 +885,21 @@ static int zfcp_erp_port_strategy_open_common(struct zfcp_erp_action *act)
static int zfcp_erp_port_strategy(struct zfcp_erp_action *erp_action)
{
struct zfcp_port *port = erp_action->port;
+ int p_status = atomic_read(&port->status);
- if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_NOESC)
+ if ((p_status & ZFCP_STATUS_COMMON_NOESC) &&
+ !(p_status & ZFCP_STATUS_COMMON_OPEN))
goto close_init_done;
switch (erp_action->step) {
case ZFCP_ERP_STEP_UNINITIALIZED:
zfcp_erp_port_strategy_clearstati(port);
- if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN)
+ if (p_status & ZFCP_STATUS_COMMON_OPEN)
return zfcp_erp_port_strategy_close(erp_action);
break;
case ZFCP_ERP_STEP_PORT_CLOSING:
- if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN)
+ if (p_status & ZFCP_STATUS_COMMON_OPEN)
return ZFCP_ERP_FAILED;
break;
}
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index 629edec..b3f28de 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -96,6 +96,7 @@ extern int zfcp_fc_scan_ports(struct zfcp_adapter *);
extern void _zfcp_fc_scan_ports_later(struct work_struct *);
extern void zfcp_fc_incoming_els(struct zfcp_fsf_req *);
extern void zfcp_fc_port_did_lookup(struct work_struct *);
+extern void zfcp_fc_trigger_did_lookup(struct zfcp_port *);
extern void zfcp_fc_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *);
extern void zfcp_fc_test_link(struct zfcp_port *);
extern void zfcp_fc_link_test_work(struct work_struct *);
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
index 722f22d..df23bce 100644
--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -361,6 +361,17 @@ out:
}
/**
+ * zfcp_fc_trigger_did_lookup - trigger the d_id lookup using a GID_PN request
+ * @port: The zfcp_port to lookup the d_id for.
+ */
+void zfcp_fc_trigger_did_lookup(struct zfcp_port *port)
+{
+ zfcp_port_get(port);
+ if (!queue_work(port->adapter->work_queue, &port->gid_pn_work))
+ zfcp_port_put(port);
+}
+
+/**
* zfcp_fc_plogi_evaluate - evaluate PLOGI playload
* @port: zfcp_port structure
* @plogi: plogi payload
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 38a7e4a..4e41baa 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -1079,7 +1079,7 @@ static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
/* common settings for ct/gs and els requests */
req->qtcb->bottom.support.service_class = FSF_CLASS_3;
req->qtcb->bottom.support.timeout = 2 * R_A_TOV;
- zfcp_fsf_start_timer(req, 2 * R_A_TOV + 10);
+ zfcp_fsf_start_timer(req, (2 * R_A_TOV + 10) * HZ);
return 0;
}
@@ -1475,9 +1475,16 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
plogi = (struct fsf_plogi *) req->qtcb->bottom.support.els;
if (req->qtcb->bottom.support.els1_length >=
FSF_PLOGI_MIN_LEN) {
- if (plogi->serv_param.wwpn != port->wwpn)
+ if (plogi->serv_param.wwpn != port->wwpn) {
port->d_id = 0;
- else {
+ dev_warn(&port->adapter->ccw_device->dev,
+ "A port opened with WWPN 0x%016Lx "
+ "returned data that identifies it as "
+ "WWPN 0x%016Lx\n",
+ (unsigned long long) port->wwpn,
+ (unsigned long long)
+ plogi->serv_param.wwpn);
+ } else {
port->wwnn = plogi->serv_param.wwnn;
zfcp_fc_plogi_evaluate(port, plogi);
}
diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c
index 079a8cf..d310008 100644
--- a/drivers/s390/scsi/zfcp_sysfs.c
+++ b/drivers/s390/scsi/zfcp_sysfs.c
@@ -224,6 +224,7 @@ static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
zfcp_erp_unit_reopen(unit, 0, "syuas_1", NULL);
zfcp_erp_wait(unit->port->adapter);
+ flush_work(&unit->scsi_work);
zfcp_unit_put(unit);
out:
mutex_unlock(&zfcp_data.config_mutex);
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index c447838..0547a7f 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -317,6 +317,7 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
out_device_destroy:
scsi_device_set_state(sdev, SDEV_DEL);
transport_destroy_device(&sdev->sdev_gendev);
+ put_device(&sdev->sdev_dev);
put_device(&sdev->sdev_gendev);
out:
if (display_failure_msg)
@@ -957,6 +958,7 @@ static inline void scsi_destroy_sdev(struct scsi_device *sdev)
if (sdev->host->hostt->slave_destroy)
sdev->host->hostt->slave_destroy(sdev);
transport_destroy_device(&sdev->sdev_gendev);
+ put_device(&sdev->sdev_dev);
put_device(&sdev->sdev_gendev);
}
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index fde5453..5c7eb63 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -864,10 +864,6 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
goto clean_device;
}
- /* take a reference for the sdev_dev; this is
- * released by the sdev_class .release */
- get_device(&sdev->sdev_gendev);
-
/* create queue files, which may be writable, depending on the host */
if (sdev->host->hostt->change_queue_depth)
error = device_create_file(&sdev->sdev_gendev, &sdev_attr_queue_depth_rw);
@@ -917,6 +913,7 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
device_del(&sdev->sdev_gendev);
transport_destroy_device(&sdev->sdev_gendev);
+ put_device(&sdev->sdev_dev);
put_device(&sdev->sdev_gendev);
return error;
@@ -1065,7 +1062,7 @@ void scsi_sysfs_device_initialize(struct scsi_device *sdev)
sdev->host->host_no, sdev->channel, sdev->id, sdev->lun);
device_initialize(&sdev->sdev_dev);
- sdev->sdev_dev.parent = &sdev->sdev_gendev;
+ sdev->sdev_dev.parent = get_device(&sdev->sdev_gendev);
sdev->sdev_dev.class = &sdev_class;
dev_set_name(&sdev->sdev_dev, "%d:%d:%d:%d",
sdev->host->host_no, sdev->channel, sdev->id, sdev->lun);
--
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