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[SCSI] zfcp: Remove initial device data from zfcp_data

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The information from the kernel parameter is only needed during init.
Keep the three pieces (busid, wwpn and lun) local to simplify the
global zfcp_data structures. While at it, also remove the unused
loglevel variable and give the module parameter variable a better
name.

Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Acked-by: Felix Beck <felix@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Christof Schmitt 2008-12-19 16:56:57 +01:00 committed by James Bottomley
parent 06499fac65
commit 3623ecba19
2 changed files with 45 additions and 54 deletions
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95
drivers/s390/scsi/zfcp_aux.c
View file

@ -34,13 +34,12 @@
#define ZFCP_BUS_ID_SIZE 20
static char *device;
MODULE_AUTHOR("IBM Deutschland Entwicklung GmbH - linux390@de.ibm.com");
MODULE_DESCRIPTION("FCP HBA driver");
MODULE_LICENSE("GPL");
module_param(device, charp, 0400);
static char *init_device;
module_param_named(device, init_device, charp, 0400);
MODULE_PARM_DESC(device, "specify initial device");
static int zfcp_reqlist_alloc(struct zfcp_adapter *adapter)
@ -73,46 +72,7 @@ int zfcp_reqlist_isempty(struct zfcp_adapter *adapter)
return 1;
}
static int __init zfcp_device_setup(char *devstr)
{
char *token;
char *str;
if (!devstr)
return 0;
/* duplicate devstr and keep the original for sysfs presentation*/
str = kmalloc(strlen(devstr) + 1, GFP_KERNEL);
if (!str)
return 0;
strcpy(str, devstr);
token = strsep(&str, ",");
if (!token || strlen(token) >= ZFCP_BUS_ID_SIZE)
goto err_out;
strncpy(zfcp_data.init_busid, token, ZFCP_BUS_ID_SIZE);
token = strsep(&str, ",");
if (!token || strict_strtoull(token, 0,
(unsigned long long *) &zfcp_data.init_wwpn))
goto err_out;
token = strsep(&str, ",");
if (!token || strict_strtoull(token, 0,
(unsigned long long *) &zfcp_data.init_fcp_lun))
goto err_out;
kfree(str);
return 1;
err_out:
kfree(str);
pr_err("%s is not a valid SCSI device\n", devstr);
return 0;
}
static void __init zfcp_init_device_configure(void)
static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun)
{
struct zfcp_adapter *adapter;
struct zfcp_port *port;
@ -120,17 +80,17 @@ static void __init zfcp_init_device_configure(void)
down(&zfcp_data.config_sema);
read_lock_irq(&zfcp_data.config_lock);
adapter = zfcp_get_adapter_by_busid(zfcp_data.init_busid);
adapter = zfcp_get_adapter_by_busid(busid);
if (adapter)
zfcp_adapter_get(adapter);
read_unlock_irq(&zfcp_data.config_lock);
if (!adapter)
goto out_adapter;
port = zfcp_port_enqueue(adapter, zfcp_data.init_wwpn, 0, 0);
port = zfcp_port_enqueue(adapter, wwpn, 0, 0);
if (IS_ERR(port))
goto out_port;
unit = zfcp_unit_enqueue(port, zfcp_data.init_fcp_lun);
unit = zfcp_unit_enqueue(port, lun);
if (IS_ERR(unit))
goto out_unit;
up(&zfcp_data.config_sema);
@ -160,6 +120,42 @@ static struct kmem_cache *zfcp_cache_create(int size, char *name)
return kmem_cache_create(name , size, align, 0, NULL);
}
static void __init zfcp_init_device_setup(char *devstr)
{
char *token;
char *str;
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);
if (!str)
return;
strcpy(str, devstr);
token = strsep(&str, ",");
if (!token || strlen(token) >= ZFCP_BUS_ID_SIZE)
goto err_out;
strncpy(busid, token, ZFCP_BUS_ID_SIZE);
token = strsep(&str, ",");
if (!token || strict_strtoull(token, 0, (unsigned long long *) &wwpn))
goto err_out;
token = strsep(&str, ",");
if (!token || strict_strtoull(token, 0, (unsigned long long *) &lun))
goto err_out;
kfree(str);
zfcp_init_device_configure(busid, wwpn, lun);
return;
err_out:
kfree(str);
pr_err("%s is not a valid SCSI device\n", devstr);
}
static int __init zfcp_module_init(void)
{
int retval = -ENOMEM;
@ -202,10 +198,9 @@ static int __init zfcp_module_init(void)
goto out_ccw_register;
}
if (zfcp_device_setup(device))
zfcp_init_device_configure();
goto out;
if (init_device)
zfcp_init_device_setup(init_device);
return 0;
out_ccw_register:
misc_deregister(&zfcp_cfdc_misc);

4
drivers/s390/scsi/zfcp_def.h
View file

@ -597,10 +597,6 @@ struct zfcp_data {
lists */
struct semaphore config_sema; /* serialises configuration
changes */
atomic_t loglevel; /* current loglevel */
char init_busid[20];
u64 init_wwpn;
u64 init_fcp_lun;
struct kmem_cache *fsf_req_qtcb_cache;
struct kmem_cache *sr_buffer_cache;
struct kmem_cache *gid_pn_cache;