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Date: Tue, 19 Aug 2008 14:21:23 -0700
From: Cordelia Sam <cordsam@...ux.vnet.ibm.com>
To: linux-kernel@...r.kernel.org
CC: akpm@...ux-foundation.org, trivial@...nel.org,
torvalds@...ux-foundation.org, kristen.c.accardi@...el.com
Subject: [PATCH] drivers-pci-hotplug-ibmphp_ebda.c: list_for_each to list_for_each_entry
Make code more readable with list_for_each_entry
Compile tested
Signed-off-by: Cordelia Sam <cordesam@...il.com>
---
drivers/pci/hotplug/ibmphp_ebda.c | 92 +++++++++---------------------------
1 files changed, 23 insertions(+), 69 deletions(-)
diff --git a/drivers/pci/hotplug/ibmphp_ebda.c b/drivers/pci/hotplug/ibmphp_ebda.c
index 8467d02..db44a37 100644
--- a/drivers/pci/hotplug/ibmphp_ebda.c
+++ b/drivers/pci/hotplug/ibmphp_ebda.c
@@ -123,10 +123,8 @@ static struct ebda_pci_rsrc *alloc_ebda_pci_rsrc (void)
static void __init print_bus_info (void)
{
struct bus_info *ptr;
- struct list_head *ptr1;
- list_for_each (ptr1, &bus_info_head) {
- ptr = list_entry (ptr1, struct bus_info, bus_info_list);
+ list_for_each_entry (ptr, &bus_info_head, bus_info_list) {
debug ("%s - slot_min = %x\n", __func__, ptr->slot_min);
debug ("%s - slot_max = %x\n", __func__, ptr->slot_max);
debug ("%s - slot_count = %x\n", __func__, ptr->slot_count);
@@ -146,10 +144,8 @@ static void __init print_bus_info (void)
static void print_lo_info (void)
{
struct rio_detail *ptr;
- struct list_head *ptr1;
debug ("print_lo_info ----\n");
- list_for_each (ptr1, &rio_lo_head) {
- ptr = list_entry (ptr1, struct rio_detail, rio_detail_list);
+ list_for_each_entry (ptr, &rio_lo_head, rio_detail_list) {
debug ("%s - rio_node_id = %x\n", __func__, ptr->rio_node_id);
debug ("%s - rio_type = %x\n", __func__, ptr->rio_type);
debug ("%s - owner_id = %x\n", __func__, ptr->owner_id);
@@ -163,10 +159,8 @@ static void print_lo_info (void)
static void print_vg_info (void)
{
struct rio_detail *ptr;
- struct list_head *ptr1;
debug ("%s ---\n", __func__);
- list_for_each (ptr1, &rio_vg_head) {
- ptr = list_entry (ptr1, struct rio_detail, rio_detail_list);
+ list_for_each_entry (ptr, &rio_vg_head, rio_detail_list) {
debug ("%s - rio_node_id = %x\n", __func__, ptr->rio_node_id);
debug ("%s - rio_type = %x\n", __func__, ptr->rio_type);
debug ("%s - owner_id = %x\n", __func__, ptr->owner_id);
@@ -180,10 +174,8 @@ static void print_vg_info (void)
static void __init print_ebda_pci_rsrc (void)
{
struct ebda_pci_rsrc *ptr;
- struct list_head *ptr1;
- list_for_each (ptr1, &ibmphp_ebda_pci_rsrc_head) {
- ptr = list_entry (ptr1, struct ebda_pci_rsrc, ebda_pci_rsrc_list);
+ list_for_each_entry (ptr, &ibmphp_ebda_pci_rsrc_head, ebda_pci_rsrc_list) {
debug ("%s - rsrc type: %x bus#: %x dev_func: %x start addr: %x end addr: %x\n",
__func__, ptr->rsrc_type ,ptr->bus_num, ptr->dev_fun,ptr->start_addr, ptr->end_addr);
}
@@ -192,10 +184,8 @@ static void __init print_ebda_pci_rsrc (void)
static void __init print_ibm_slot (void)
{
struct slot *ptr;
- struct list_head *ptr1;
- list_for_each (ptr1, &ibmphp_slot_head) {
- ptr = list_entry (ptr1, struct slot, ibm_slot_list);
+ list_for_each_entry (ptr, &ibmphp_slot_head, ibm_slot_list) {
debug ("%s - slot_number: %x\n", __func__, ptr->number);
}
}
@@ -203,10 +193,8 @@ static void __init print_ibm_slot (void)
static void __init print_opt_vg (void)
{
struct opt_rio *ptr;
- struct list_head *ptr1;
debug ("%s ---\n", __func__);
- list_for_each (ptr1, &opt_vg_head) {
- ptr = list_entry (ptr1, struct opt_rio, opt_rio_list);
+ list_for_each_entry (ptr, &opt_vg_head, opt_rio_list) {
debug ("%s - rio_type %x\n", __func__, ptr->rio_type);
debug ("%s - chassis_num: %x\n", __func__, ptr->chassis_num);
debug ("%s - first_slot_num: %x\n", __func__, ptr->first_slot_num);
@@ -217,13 +205,9 @@ static void __init print_opt_vg (void)
static void __init print_ebda_hpc (void)
{
struct controller *hpc_ptr;
- struct list_head *ptr1;
u16 index;
- list_for_each (ptr1, &ebda_hpc_head) {
-
- hpc_ptr = list_entry (ptr1, struct controller, ebda_hpc_list);
-
+ list_for_each_entry (hpc_ptr, &ebda_hpc_head, ebda_hpc_list) {
for (index = 0; index < hpc_ptr->slot_count; index++) {
debug ("%s - physical slot#: %x\n", __func__, hpc_ptr->slots[index].slot_num);
debug ("%s - pci bus# of the slot: %x\n", __func__, hpc_ptr->slots[index].slot_bus_num);
@@ -460,9 +444,7 @@ static int __init ebda_rio_table (void)
static struct opt_rio *search_opt_vg (u8 chassis_num)
{
struct opt_rio *ptr;
- struct list_head *ptr1;
- list_for_each (ptr1, &opt_vg_head) {
- ptr = list_entry (ptr1, struct opt_rio, opt_rio_list);
+ list_for_each_entry (ptr, &opt_vg_head, opt_rio_list) {
if (ptr->chassis_num == chassis_num)
return ptr;
}
@@ -473,10 +455,8 @@ static int __init combine_wpg_for_chassis (void)
{
struct opt_rio *opt_rio_ptr = NULL;
struct rio_detail *rio_detail_ptr = NULL;
- struct list_head *list_head_ptr = NULL;
- list_for_each (list_head_ptr, &rio_vg_head) {
- rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
+ list_for_each_entry (rio_detail_ptr, &rio_vg_head, rio_detail_list) {
opt_rio_ptr = search_opt_vg (rio_detail_ptr->chassis_num);
if (!opt_rio_ptr) {
opt_rio_ptr = kzalloc(sizeof(struct opt_rio), GFP_KERNEL);
@@ -497,14 +477,12 @@ static int __init combine_wpg_for_chassis (void)
}
/*
- * reorgnizing linked list of expansion box
+ * reorganizing linked list of expansion box
*/
static struct opt_rio_lo *search_opt_lo (u8 chassis_num)
{
struct opt_rio_lo *ptr;
- struct list_head *ptr1;
- list_for_each (ptr1, &opt_lo_head) {
- ptr = list_entry (ptr1, struct opt_rio_lo, opt_rio_lo_list);
+ list_for_each_entry (ptr, &opt_lo_head, opt_rio_lo_list) {
if (ptr->chassis_num == chassis_num)
return ptr;
}
@@ -515,10 +493,8 @@ static int combine_wpg_for_expansion (void)
{
struct opt_rio_lo *opt_rio_lo_ptr = NULL;
struct rio_detail *rio_detail_ptr = NULL;
- struct list_head *list_head_ptr = NULL;
- list_for_each (list_head_ptr, &rio_lo_head) {
- rio_detail_ptr = list_entry (list_head_ptr, struct rio_detail, rio_detail_list);
+ list_for_each_entry (rio_detail_ptr, &rio_lo_head, rio_detail_list) {
opt_rio_lo_ptr = search_opt_lo (rio_detail_ptr->chassis_num);
if (!opt_rio_lo_ptr) {
opt_rio_lo_ptr = kzalloc(sizeof(struct opt_rio_lo), GFP_KERNEL);
@@ -550,20 +526,17 @@ static int first_slot_num (u8 slot_num, u8 first_slot, u8 var)
{
struct opt_rio *opt_vg_ptr = NULL;
struct opt_rio_lo *opt_lo_ptr = NULL;
- struct list_head *ptr = NULL;
int rc = 0;
if (!var) {
- list_for_each (ptr, &opt_vg_head) {
- opt_vg_ptr = list_entry (ptr, struct opt_rio, opt_rio_list);
+ list_for_each_entry (opt_vg_ptr, &opt_vg_head, opt_rio_list) {
if ((first_slot < opt_vg_ptr->first_slot_num) && (slot_num >= opt_vg_ptr->first_slot_num)) {
rc = -ENODEV;
break;
}
}
} else {
- list_for_each (ptr, &opt_lo_head) {
- opt_lo_ptr = list_entry (ptr, struct opt_rio_lo, opt_rio_lo_list);
+ list_for_each_entry (opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) {
if ((first_slot < opt_lo_ptr->first_slot_num) && (slot_num >= opt_lo_ptr->first_slot_num)) {
rc = -ENODEV;
break;
@@ -576,10 +549,8 @@ static int first_slot_num (u8 slot_num, u8 first_slot, u8 var)
static struct opt_rio_lo * find_rxe_num (u8 slot_num)
{
struct opt_rio_lo *opt_lo_ptr;
- struct list_head *ptr;
- list_for_each (ptr, &opt_lo_head) {
- opt_lo_ptr = list_entry (ptr, struct opt_rio_lo, opt_rio_lo_list);
+ list_for_each_entry (opt_lo_ptr, &opt_lo_head, opt_rio_lo_list) {
//check to see if this slot_num belongs to expansion box
if ((slot_num >= opt_lo_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_lo_ptr->first_slot_num, 1)))
return opt_lo_ptr;
@@ -590,10 +561,8 @@ static struct opt_rio_lo * find_rxe_num (u8 slot_num)
static struct opt_rio * find_chassis_num (u8 slot_num)
{
struct opt_rio *opt_vg_ptr;
- struct list_head *ptr;
- list_for_each (ptr, &opt_vg_head) {
- opt_vg_ptr = list_entry (ptr, struct opt_rio, opt_rio_list);
+ list_for_each_entry (opt_vg_ptr, &opt_vg_head, opt_rio_list) {
//check to see if this slot_num belongs to chassis
if ((slot_num >= opt_vg_ptr->first_slot_num) && (!first_slot_num (slot_num, opt_vg_ptr->first_slot_num, 0)))
return opt_vg_ptr;
@@ -607,11 +576,9 @@ static struct opt_rio * find_chassis_num (u8 slot_num)
static u8 calculate_first_slot (u8 slot_num)
{
u8 first_slot = 1;
- struct list_head * list;
struct slot * slot_cur;
- list_for_each (list, &ibmphp_slot_head) {
- slot_cur = list_entry (list, struct slot, ibm_slot_list);
+ list_for_each_entry (slot_cur, &ibmphp_slot_head, ibm_slot_list) {
if (slot_cur->ctrl) {
if ((slot_cur->ctrl->ctlr_type != 4) && (slot_cur->ctrl->ending_slot_num > first_slot) && (slot_num > slot_cur->ctrl->ending_slot_num))
first_slot = slot_cur->ctrl->ending_slot_num;
@@ -767,7 +734,6 @@ static int __init ebda_rsrc_controller (void)
struct bus_info *bus_info_ptr1, *bus_info_ptr2;
int rc;
struct slot *tmp_slot;
- struct list_head *list;
addr = hpc_list_ptr->phys_addr;
for (ctlr = 0; ctlr < hpc_list_ptr->num_ctlrs; ctlr++) {
@@ -997,9 +963,7 @@ static int __init ebda_rsrc_controller (void)
} /* each hpc */
- list_for_each (list, &ibmphp_slot_head) {
- tmp_slot = list_entry (list, struct slot, ibm_slot_list);
-
+ list_for_each_entry (tmp_slot, &ibmphp_slot_head, ibm_slot_list) {
snprintf (tmp_slot->hotplug_slot->name, 30, "%s", create_file_name (tmp_slot));
pci_hp_register(tmp_slot->hotplug_slot,
pci_find_bus(0, tmp_slot->bus), tmp_slot->device);
@@ -1101,10 +1065,8 @@ u16 ibmphp_get_total_controllers (void)
struct slot *ibmphp_get_slot_from_physical_num (u8 physical_num)
{
struct slot *slot;
- struct list_head *list;
- list_for_each (list, &ibmphp_slot_head) {
- slot = list_entry (list, struct slot, ibm_slot_list);
+ list_for_each_entry (slot, &ibmphp_slot_head, ibm_slot_list) {
if (slot->number == physical_num)
return slot;
}
@@ -1120,10 +1082,8 @@ struct slot *ibmphp_get_slot_from_physical_num (u8 physical_num)
struct bus_info *ibmphp_find_same_bus_num (u32 num)
{
struct bus_info *ptr;
- struct list_head *ptr1;
- list_for_each (ptr1, &bus_info_head) {
- ptr = list_entry (ptr1, struct bus_info, bus_info_list);
+ list_for_each_entry (ptr, &bus_info_head, bus_info_list) {
if (ptr->busno == num)
return ptr;
}
@@ -1136,10 +1096,8 @@ struct bus_info *ibmphp_find_same_bus_num (u32 num)
int ibmphp_get_bus_index (u8 num)
{
struct bus_info *ptr;
- struct list_head *ptr1;
- list_for_each (ptr1, &bus_info_head) {
- ptr = list_entry (ptr1, struct bus_info, bus_info_list);
+ list_for_each_entry (ptr, &bus_info_head, bus_info_list) {
if (ptr->busno == num)
return ptr->index;
}
@@ -1212,11 +1170,9 @@ static struct pci_driver ibmphp_driver = {
int ibmphp_register_pci (void)
{
struct controller *ctrl;
- struct list_head *tmp;
int rc = 0;
- list_for_each (tmp, &ebda_hpc_head) {
- ctrl = list_entry (tmp, struct controller, ebda_hpc_list);
+ list_for_each_entry (ctrl, &ebda_hpc_head, ebda_hpc_list) {
if (ctrl->ctlr_type == 1) {
rc = pci_register_driver(&ibmphp_driver);
break;
@@ -1227,12 +1183,10 @@ int ibmphp_register_pci (void)
static int ibmphp_probe (struct pci_dev * dev, const struct pci_device_id *ids)
{
struct controller *ctrl;
- struct list_head *tmp;
debug ("inside ibmphp_probe\n");
- list_for_each (tmp, &ebda_hpc_head) {
- ctrl = list_entry (tmp, struct controller, ebda_hpc_list);
+ list_for_each_entry (ctrl, &ebda_hpc_head, ebda_hpc_list) {
if (ctrl->ctlr_type == 1) {
if ((dev->devfn == ctrl->u.pci_ctlr.dev_fun) && (dev->bus->number == ctrl->u.pci_ctlr.bus)) {
ctrl->ctrl_dev = dev;
--
1.5.4.3
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