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Date: Sun, 3 Dec 2006 19:18:57 +0100
From: Ivo van Doorn <ivdoorn@...il.com>
To: "John W. Linville" <linville@...driver.com>
Cc: netdev@...r.kernel.org
Subject: [PATCH 22/26] rt2x00: Fix various initialization problems
Always use kzalloc instead of kmalloc.
Remove duplicate init functions.
And destroy the workqueue before freeing
resources, otherwise a thread on the queue might
still want to access that resource.
Signed-off-by Ivo van Doorn <IvDoorn@...il.com>
---
diff -rU3 wireless-dev-ringfull/drivers/net/wireless/d80211/rt2x00/rt2400pci.c wireless-dev-init/drivers/net/wireless/d80211/rt2x00/rt2400pci.c
--- wireless-dev-ringfull/drivers/net/wireless/d80211/rt2x00/rt2400pci.c 2006-12-03 15:14:07.000000000 +0100
+++ wireless-dev-init/drivers/net/wireless/d80211/rt2x00/rt2400pci.c 2006-12-03 15:21:22.000000000 +0100
@@ -771,7 +771,7 @@
/*
* Allocate all ring entries.
*/
- ring->entry = kmalloc(ring->stats.limit * sizeof(struct data_entry),
+ ring->entry = kzalloc(ring->stats.limit * sizeof(struct data_entry),
GFP_KERNEL);
if (!ring->entry)
return -ENOMEM;
@@ -791,6 +791,7 @@
* addresses.
*/
for (i = 0; i < ring->stats.limit; i++) {
+ ring->entry[i].flags = 0;
ring->entry[i].ring = ring;
ring->entry[i].skb = NULL;
ring->entry[i].priv = ring->data_addr
@@ -1174,16 +1175,6 @@
}
/*
- * Initialize all registers.
- */
- if (rt2400pci_init_rings(rt2x00dev) ||
- rt2400pci_init_registers(rt2x00dev) ||
- rt2400pci_init_bbp(rt2x00dev)) {
- ERROR("Register initialization failed.\n");
- goto exit_fail;
- }
-
- /*
* Reset the channel_change_time value
* to make sure it will be correctly initialized
* after the radio has been enabled.
@@ -2677,6 +2668,14 @@
static void rt2400pci_free_dev(struct rt2x00_dev *rt2x00dev)
{
/*
+ * Free workqueue.
+ */
+ if (likely(rt2x00dev->workqueue)) {
+ destroy_workqueue(rt2x00dev->workqueue);
+ rt2x00dev->workqueue = NULL;
+ }
+
+ /*
* Free ring structures.
*/
kfree(rt2x00dev->ring);
@@ -2696,14 +2695,6 @@
}
/*
- * Free workqueue.
- */
- if (likely(rt2x00dev->workqueue)) {
- destroy_workqueue(rt2x00dev->workqueue);
- rt2x00dev->workqueue = NULL;
- }
-
- /*
* Free ieee80211_hw memory.
*/
if (likely(rt2x00dev->hw->modes)) {
diff -rU3 wireless-dev-ringfull/drivers/net/wireless/d80211/rt2x00/rt2500pci.c wireless-dev-init/drivers/net/wireless/d80211/rt2x00/rt2500pci.c
--- wireless-dev-ringfull/drivers/net/wireless/d80211/rt2x00/rt2500pci.c 2006-12-03 15:14:05.000000000 +0100
+++ wireless-dev-init/drivers/net/wireless/d80211/rt2x00/rt2500pci.c 2006-12-03 15:21:27.000000000 +0100
@@ -864,7 +864,7 @@
/*
* Allocate all ring entries.
*/
- ring->entry = kmalloc(ring->stats.limit * sizeof(struct data_entry),
+ ring->entry = kzalloc(ring->stats.limit * sizeof(struct data_entry),
GFP_KERNEL);
if (!ring->entry)
return -ENOMEM;
@@ -884,6 +884,7 @@
* addresses.
*/
for (i = 0; i < ring->stats.limit; i++) {
+ ring->entry[i].flags = 0;
ring->entry[i].ring = ring;
ring->entry[i].skb = NULL;
ring->entry[i].priv = ring->data_addr
@@ -1299,16 +1300,6 @@
}
/*
- * Initialize all registers.
- */
- if (rt2500pci_init_rings(rt2x00dev) ||
- rt2500pci_init_registers(rt2x00dev) ||
- rt2500pci_init_bbp(rt2x00dev)) {
- ERROR("Register initialization failed.\n");
- goto exit_fail;
- }
-
- /*
* Reset the channel_change_time value
* to make sure it will be correctly initialized
* after the radio has been enabled.
@@ -2978,6 +2969,14 @@
static void rt2500pci_free_dev(struct rt2x00_dev *rt2x00dev)
{
/*
+ * Free workqueue.
+ */
+ if (likely(rt2x00dev->workqueue)) {
+ destroy_workqueue(rt2x00dev->workqueue);
+ rt2x00dev->workqueue = NULL;
+ }
+
+ /*
* Free ring structures.
*/
kfree(rt2x00dev->ring);
@@ -2997,14 +2996,6 @@
}
/*
- * Free workqueue.
- */
- if (likely(rt2x00dev->workqueue)) {
- destroy_workqueue(rt2x00dev->workqueue);
- rt2x00dev->workqueue = NULL;
- }
-
- /*
* Free ieee80211_hw memory.
*/
if (likely(rt2x00dev->hw->modes)) {
diff -rU3 wireless-dev-ringfull/drivers/net/wireless/d80211/rt2x00/rt2500usb.c wireless-dev-init/drivers/net/wireless/d80211/rt2x00/rt2500usb.c
--- wireless-dev-ringfull/drivers/net/wireless/d80211/rt2x00/rt2500usb.c 2006-12-03 15:14:10.000000000 +0100
+++ wireless-dev-init/drivers/net/wireless/d80211/rt2x00/rt2500usb.c 2006-12-03 15:21:33.000000000 +0100
@@ -917,7 +917,7 @@
/*
* Allocate all ring entries.
*/
- ring->entry = kmalloc(ring->stats.limit * sizeof(struct data_entry),
+ ring->entry = kzalloc(ring->stats.limit * sizeof(struct data_entry),
GFP_KERNEL);
if (!ring->entry)
return -ENOMEM;
@@ -939,6 +939,7 @@
*/
status = 0;
for (i = 0; i < ring->stats.limit; i++) {
+ ring->entry[i].flags = 0;
ring->entry[i].ring = ring;
ring->entry[i].priv =
(!status) ? usb_alloc_urb(0, GFP_KERNEL) : NULL;
@@ -1265,16 +1266,6 @@
}
/*
- * Initialize all registers.
- */
- if (rt2500usb_init_rings(rt2x00dev) ||
- rt2500usb_init_registers(rt2x00dev) ||
- rt2500usb_init_bbp(rt2x00dev)) {
- ERROR("Register initialization failed.\n");
- goto exit_fail;
- }
-
- /*
* Reset the channel_change_time value
* to make sure it will be correctly initialized
* after the radio has been enabled.
@@ -2803,6 +2794,14 @@
static void rt2500usb_free_dev(struct rt2x00_dev *rt2x00dev)
{
/*
+ * Free workqueue.
+ */
+ if (likely(rt2x00dev->workqueue)) {
+ destroy_workqueue(rt2x00dev->workqueue);
+ rt2x00dev->workqueue = NULL;
+ }
+
+ /*
* Free ring structures.
*/
kfree(rt2x00dev->ring);
@@ -2814,14 +2813,6 @@
kfree(rt2x00dev->eeprom);
/*
- * Free workqueue.
- */
- if (likely(rt2x00dev->workqueue)) {
- destroy_workqueue(rt2x00dev->workqueue);
- rt2x00dev->workqueue = NULL;
- }
-
- /*
* Free ieee80211_hw memory.
*/
if (likely(rt2x00dev->hw->modes)) {
diff -rU3 wireless-dev-ringfull/drivers/net/wireless/d80211/rt2x00/rt61pci.c wireless-dev-init/drivers/net/wireless/d80211/rt2x00/rt61pci.c
--- wireless-dev-ringfull/drivers/net/wireless/d80211/rt2x00/rt61pci.c 2006-12-03 15:14:18.000000000 +0100
+++ wireless-dev-init/drivers/net/wireless/d80211/rt2x00/rt61pci.c 2006-12-03 15:21:35.000000000 +0100
@@ -1291,7 +1291,7 @@
/*
* Allocate all ring entries.
*/
- ring->entry = kmalloc(ring->stats.limit * sizeof(struct data_entry),
+ ring->entry = kzalloc(ring->stats.limit * sizeof(struct data_entry),
GFP_KERNEL);
if (!ring->entry)
return -ENOMEM;
@@ -1311,6 +1311,7 @@
* addresses.
*/
for (i = 0; i < ring->stats.limit; i++) {
+ ring->entry[i].flags = 0;
ring->entry[i].ring = ring;
ring->entry[i].skb = NULL;
ring->entry[i].priv = ring->data_addr
@@ -1738,16 +1739,6 @@
}
/*
- * Initialize all registers.
- */
- if (rt61pci_init_rings(rt2x00dev) ||
- rt61pci_init_registers(rt2x00dev) ||
- rt61pci_init_bbp(rt2x00dev)) {
- ERROR("Register initialization failed.\n");
- goto exit_fail;
- }
-
- /*
* Reset the channel_change_time value
* to make sure it will be correctly initialized
* after the radio has been enabled.
@@ -3506,6 +3497,14 @@
static void rt61pci_free_dev(struct rt2x00_dev *rt2x00dev)
{
/*
+ * Free workqueue.
+ */
+ if (likely(rt2x00dev->workqueue)) {
+ destroy_workqueue(rt2x00dev->workqueue);
+ rt2x00dev->workqueue = NULL;
+ }
+
+ /*
* Free ring structures.
*/
kfree(rt2x00dev->ring);
@@ -3525,14 +3524,6 @@
}
/*
- * Free workqueue.
- */
- if (likely(rt2x00dev->workqueue)) {
- destroy_workqueue(rt2x00dev->workqueue);
- rt2x00dev->workqueue = NULL;
- }
-
- /*
* Free ieee80211_hw memory.
*/
if (likely(rt2x00dev->hw->modes)) {
diff -rU3 wireless-dev-ringfull/drivers/net/wireless/d80211/rt2x00/rt73usb.c wireless-dev-init/drivers/net/wireless/d80211/rt2x00/rt73usb.c
--- wireless-dev-ringfull/drivers/net/wireless/d80211/rt2x00/rt73usb.c 2006-12-03 15:14:33.000000000 +0100
+++ wireless-dev-init/drivers/net/wireless/d80211/rt2x00/rt73usb.c 2006-12-03 15:21:44.000000000 +0100
@@ -1149,7 +1149,7 @@
/*
* Allocate all ring entries.
*/
- ring->entry = kmalloc(ring->stats.limit * sizeof(struct data_entry),
+ ring->entry = kzalloc(ring->stats.limit * sizeof(struct data_entry),
GFP_KERNEL);
if (!ring->entry)
return -ENOMEM;
@@ -1171,6 +1171,7 @@
*/
status = 0;
for (i = 0; i < ring->stats.limit; i++) {
+ ring->entry[i].flags = 0;
ring->entry[i].ring = ring;
ring->entry[i].priv =
(!status) ? usb_alloc_urb(0, GFP_KERNEL) : NULL;
@@ -1521,16 +1522,6 @@
}
/*
- * Initialize all registers.
- */
- if (rt73usb_init_rings(rt2x00dev) ||
- rt73usb_init_registers(rt2x00dev) ||
- rt73usb_init_bbp(rt2x00dev)) {
- ERROR("Register initialization failed.\n");
- goto exit_fail;
- }
-
- /*
* Reset the channel_change_time value
* to make sure it will be correctly initialized
* after the radio has been enabled.
@@ -3147,6 +3138,14 @@
static void rt73usb_free_dev(struct rt2x00_dev *rt2x00dev)
{
/*
+ * Free workqueue.
+ */
+ if (likely(rt2x00dev->workqueue)) {
+ destroy_workqueue(rt2x00dev->workqueue);
+ rt2x00dev->workqueue = NULL;
+ }
+
+ /*
* Free ring structures.
*/
kfree(rt2x00dev->ring);
@@ -3158,14 +3157,6 @@
kfree(rt2x00dev->eeprom);
/*
- * Free workqueue.
- */
- if (likely(rt2x00dev->workqueue)) {
- destroy_workqueue(rt2x00dev->workqueue);
- rt2x00dev->workqueue = NULL;
- }
-
- /*
* Free ieee80211_hw memory.
*/
if (likely(rt2x00dev->hw->modes)) {
-
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