From ac1f0e9923356652f21756526e194a4a1a37dd38 Mon Sep 17 00:00:00 2001 From: Linas Vepstas Date: Fri, 13 Apr 2007 15:34:25 -0700 Subject: [PATCH] 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 Cc: John Rose Signed-off-by: Kristen Carlson Accardi Signed-off-by: Greg Kroah-Hartman --- drivers/pci/hotplug/rpaphp_core.c | 38 +++---------------------------- 1 file changed, 3 insertions(+), 35 deletions(-) diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c index 4efdaa19e8f9..847936fe327e 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, -- 2.20.1