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authorLinas Vepstas <linas@austin.ibm.com>2007-04-13 15:34:25 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2007-05-02 19:02:40 -0700
commitac1f0e9923356652f21756526e194a4a1a37dd38 (patch)
tree0a637f5bce999310eddd4276120b65c04e67cecb /drivers
parentb5661479eeb863749ae28b9ee0dd288464311854 (diff)
PCI: rpaphp: Remove semaphores
Remove the semaphores from the get routine. These do not appear to be protecting anything that I can make out, and they also do not seem to be required by the hotplug driver. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Cc: John Rose <johnrose@austin.ibm.com> Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/pci/hotplug/rpaphp_core.c38
1 files changed, 3 insertions, 35 deletions
diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
index 4efdaa19e8f..847936fe327 100644
--- a/drivers/pci/hotplug/rpaphp_core.c
+++ b/drivers/pci/hotplug/rpaphp_core.c
@@ -39,7 +39,6 @@
#include "rpaphp.h"
int debug;
-static struct semaphore rpaphp_sem;
LIST_HEAD(rpaphp_slot_head);
#define DRIVER_VERSION "0.1"
@@ -66,7 +65,6 @@ static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 value)
int rc;
struct slot *slot = (struct slot *)hotplug_slot->private;
- down(&rpaphp_sem);
switch (value) {
case 0:
case 1:
@@ -76,7 +74,6 @@ static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 value)
value = 1;
break;
}
- up(&rpaphp_sem);
rc = rtas_set_indicator(DR_INDICATOR, slot->index, value);
if (!rc)
@@ -95,11 +92,9 @@ static int get_power_status(struct hotplug_slot *hotplug_slot, u8 * value)
int retval, level;
struct slot *slot = (struct slot *)hotplug_slot->private;
- down(&rpaphp_sem);
retval = rtas_get_power_level (slot->power_domain, &level);
if (!retval)
*value = level;
- up(&rpaphp_sem);
return retval;
}
@@ -118,9 +113,7 @@ static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 * value)
struct slot *slot = (struct slot *)hotplug_slot->private;
int rc, state;
- down(&rpaphp_sem);
rc = rpaphp_get_sensor_state(slot, &state);
- up(&rpaphp_sem);
*value = NOT_VALID;
if (rc)
@@ -138,7 +131,6 @@ static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_spe
{
struct slot *slot = (struct slot *)hotplug_slot->private;
- down(&rpaphp_sem);
switch (slot->type) {
case 1:
case 2:
@@ -169,7 +161,6 @@ static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_spe
break;
}
- up(&rpaphp_sem);
return 0;
}
@@ -374,7 +365,6 @@ static int __init rpaphp_init(void)
struct device_node *dn = NULL;
info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
- init_MUTEX(&rpaphp_sem);
while ((dn = of_find_node_by_name(dn, "pci")))
rpaphp_add_slot(dn);
@@ -387,8 +377,9 @@ static void __exit rpaphp_exit(void)
cleanup_slots();
}
-static int __enable_slot(struct slot *slot)
+static int enable_slot(struct hotplug_slot *hotplug_slot)
{
+ struct slot *slot = (struct slot *)hotplug_slot->private;
int state;
int retval;
@@ -412,20 +403,9 @@ static int __enable_slot(struct slot *slot)
return 0;
}
-static int enable_slot(struct hotplug_slot *hotplug_slot)
+static int disable_slot(struct hotplug_slot *hotplug_slot)
{
- int retval;
struct slot *slot = (struct slot *)hotplug_slot->private;
-
- down(&rpaphp_sem);
- retval = __enable_slot(slot);
- up(&rpaphp_sem);
-
- return retval;
-}
-
-static inline int __disable_slot(struct slot *slot)
-{
if (slot->state == NOT_CONFIGURED)
return -EINVAL;
@@ -434,18 +414,6 @@ static inline int __disable_slot(struct slot *slot)
return 0;
}
-static int disable_slot(struct hotplug_slot *hotplug_slot)
-{
- struct slot *slot = (struct slot *)hotplug_slot->private;
- int retval;
-
- down(&rpaphp_sem);
- retval = __disable_slot (slot);
- up(&rpaphp_sem);
-
- return retval;
-}
-
struct hotplug_slot_ops rpaphp_hotplug_slot_ops = {
.owner = THIS_MODULE,
.enable_slot = enable_slot,