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[SCSI] scsi_dh: code cleanup and remove the references to scsi_dev_info

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All the handlers have now implemented the match function so We don't need to
use scsi_dev_info any more for matching purposes.

Signed-off-by: Babu Moger <babu.moger@netapp.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Moger, Babu 2011-12-01 15:03:12 -05:00 committed by James Bottomley
parent bee89eae8d
commit 2b132577a0
3 changed files with 0 additions and 60 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

58
drivers/scsi/device_handler/scsi_dh.c
View file

@ -28,7 +28,6 @@
static DEFINE_SPINLOCK(list_lock);
static LIST_HEAD(scsi_dh_list);
static int scsi_dh_list_idx = 1;
static struct scsi_device_handler *get_device_handler(const char *name)
{
@ -45,21 +44,6 @@ static struct scsi_device_handler *get_device_handler(const char *name)
return found;
}
static struct scsi_device_handler *get_device_handler_by_idx(int idx)
{
struct scsi_device_handler *tmp, *found = NULL;
spin_lock(&list_lock);
list_for_each_entry(tmp, &scsi_dh_list, list) {
if (tmp->idx == idx) {
found = tmp;
break;
}
}
spin_unlock(&list_lock);
return found;
}
/*
* device_handler_match_function - Match a device handler to a device
* @sdev - SCSI device to be tested
@ -83,23 +67,6 @@ device_handler_match_function(struct scsi_device *sdev)
return found_dh;
}
/*
* device_handler_match_devlist - Match a device handler to a device
* @sdev - SCSI device to be tested
*
* Tests @sdev against all device_handler registered in the devlist.
* Returns the found device handler or NULL if not found.
*/
static struct scsi_device_handler *
device_handler_match_devlist(struct scsi_device *sdev)
{
int idx;
idx = scsi_get_device_flags_keyed(sdev, sdev->vendor, sdev->model,
SCSI_DEVINFO_DH);
return get_device_handler_by_idx(idx);
}
/*
* device_handler_match - Attach a device handler to a device
* @scsi_dh - The device handler to match against or NULL
@ -116,8 +83,6 @@ device_handler_match(struct scsi_device_handler *scsi_dh,
struct scsi_device_handler *found_dh;
found_dh = device_handler_match_function(sdev);
if (!found_dh)
found_dh = device_handler_match_devlist(sdev);
if (scsi_dh && found_dh != scsi_dh)
found_dh = NULL;
@ -361,25 +326,14 @@ static int scsi_dh_notifier_remove(struct device *dev, void *data)
*/
int scsi_register_device_handler(struct scsi_device_handler *scsi_dh)
{
int i;
if (get_device_handler(scsi_dh->name))
return -EBUSY;
spin_lock(&list_lock);
scsi_dh->idx = scsi_dh_list_idx++;
list_add(&scsi_dh->list, &scsi_dh_list);
spin_unlock(&list_lock);
for (i = 0; scsi_dh->devlist && scsi_dh->devlist[i].vendor; i++) {
scsi_dev_info_list_add_keyed(0,
scsi_dh->devlist[i].vendor,
scsi_dh->devlist[i].model,
NULL,
scsi_dh->idx,
SCSI_DEVINFO_DH);
}
bus_for_each_dev(&scsi_bus_type, NULL, scsi_dh, scsi_dh_notifier_add);
printk(KERN_INFO "%s: device handler registered\n", scsi_dh->name);
@ -396,7 +350,6 @@ EXPORT_SYMBOL_GPL(scsi_register_device_handler);
*/
int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh)
{
int i;
if (!get_device_handler(scsi_dh->name))
return -ENODEV;
@ -404,12 +357,6 @@ int scsi_unregister_device_handler(struct scsi_device_handler *scsi_dh)
bus_for_each_dev(&scsi_bus_type, NULL, scsi_dh,
scsi_dh_notifier_remove);
for (i = 0; scsi_dh->devlist && scsi_dh->devlist[i].vendor; i++) {
scsi_dev_info_list_del_keyed(scsi_dh->devlist[i].vendor,
scsi_dh->devlist[i].model,
SCSI_DEVINFO_DH);
}
spin_lock(&list_lock);
list_del(&scsi_dh->list);
spin_unlock(&list_lock);
@ -588,10 +535,6 @@ static int __init scsi_dh_init(void)
{
int r;
r = scsi_dev_info_add_list(SCSI_DEVINFO_DH, "SCSI Device Handler");
if (r)
return r;
r = bus_register_notifier(&scsi_bus_type, &scsi_dh_nb);
if (!r)
@ -606,7 +549,6 @@ static void __exit scsi_dh_exit(void)
bus_for_each_dev(&scsi_bus_type, NULL, NULL,
scsi_dh_sysfs_attr_remove);
bus_unregister_notifier(&scsi_bus_type, &scsi_dh_nb);
scsi_dev_info_remove_list(SCSI_DEVINFO_DH);
}
module_init(scsi_dh_init);

1
drivers/scsi/scsi_priv.h
View file

@ -45,7 +45,6 @@ static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
enum {
SCSI_DEVINFO_GLOBAL = 0,
SCSI_DEVINFO_SPI,
SCSI_DEVINFO_DH,
};
extern int scsi_get_device_flags(struct scsi_device *sdev,

1
include/scsi/scsi_device.h
View file

@ -185,7 +185,6 @@ typedef void (*activate_complete)(void *, int);
struct scsi_device_handler {
/* Used by the infrastructure */
struct list_head list; /* list of scsi_device_handlers */
int idx;
/* Filled by the hardware handler */
struct module *module;