From d0699bf918d91c46dc88bdc32509e653b6b03e54 Mon Sep 17 00:00:00 2001
From: mb <mb@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Fri, 4 Mar 2011 15:40:32 +0000
Subject: n810: More retu-wdt cleanups
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25863 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
...34-cbus-retu-wdt-remove-unused-interfaces.patch | 182 ++++++++++++++++++++
.../patches-2.6.38/535-cbus-retu-wdt-cleanup.patch | 184 +-------------------
...540-cbus-retu-wdt-remove-static-variables.patch | 191 +++++++++++++++++++++
.../545-cbus-retu-wdt-constify-info-struct.patch | 13 ++
4 files changed, 389 insertions(+), 181 deletions(-)
create mode 100644 target/linux/omap24xx/patches-2.6.38/534-cbus-retu-wdt-remove-unused-interfaces.patch
create mode 100644 target/linux/omap24xx/patches-2.6.38/540-cbus-retu-wdt-remove-static-variables.patch
create mode 100644 target/linux/omap24xx/patches-2.6.38/545-cbus-retu-wdt-constify-info-struct.patch
diff --git a/target/linux/omap24xx/patches-2.6.38/534-cbus-retu-wdt-remove-unused-interfaces.patch b/target/linux/omap24xx/patches-2.6.38/534-cbus-retu-wdt-remove-unused-interfaces.patch
new file mode 100644
index 000000000..b7f73839e
--- /dev/null
+++ b/target/linux/omap24xx/patches-2.6.38/534-cbus-retu-wdt-remove-unused-interfaces.patch
@@ -0,0 +1,182 @@
+Index: linux-2.6.38-rc6/drivers/cbus/retu-wdt.c
+===================================================================
+--- linux-2.6.38-rc6.orig/drivers/cbus/retu-wdt.c 2011-03-04 15:45:37.533948567 +0100
++++ linux-2.6.38-rc6/drivers/cbus/retu-wdt.c 2011-03-04 15:46:21.312816961 +0100
+@@ -52,7 +52,6 @@ static DEFINE_MUTEX(retu_wdt_mutex);
+
+ /* Current period of watchdog */
+ static unsigned int period_val = RETU_WDT_DEFAULT_TIMER;
+-static int counter_param = RETU_WDT_MAX_TIMER;
+
+ struct retu_wdt_dev {
+ struct device *dev;
+@@ -109,56 +108,6 @@ static void retu_wdt_ping_work(struct wo
+ retu_wdt_ping_enable(wdev);
+ }
+
+-static ssize_t retu_wdt_period_show(struct device *dev,
+- struct device_attribute *attr, char *buf)
+-{
+- /* Show current max counter */
+- return sprintf(buf, "%u\n", (u16)period_val);
+-}
+-
+-/*
+- * Note: This inteface is non-standard and likely to disappear!
+- * Use /dev/watchdog instead, that's the standard.
+- */
+-static ssize_t retu_wdt_period_store(struct device *dev,
+- struct device_attribute *attr,
+- const char *buf, size_t count)
+-{
+- unsigned int new_period;
+- int ret;
+-
+-#ifdef CONFIG_WATCHDOG_NOWAYOUT
+- retu_wdt_ping_disable(retu_wdt);
+-#endif
+-
+- if (sscanf(buf, "%u", &new_period) != 1) {
+- printk(KERN_ALERT "retu_wdt_period_store: Invalid input\n");
+- return -EINVAL;
+- }
+-
+- ret = retu_modify_counter(new_period);
+- if (ret < 0)
+- return ret;
+-
+- return strnlen(buf, count);
+-}
+-
+-static ssize_t retu_wdt_counter_show(struct device *dev,
+- struct device_attribute *attr, char *buf)
+-{
+- u16 counter;
+-
+- /* Show current value in watchdog counter */
+- counter = retu_read_reg(dev, RETU_REG_WATCHDOG);
+-
+- /* Only the 5 LSB are important */
+- return snprintf(buf, PAGE_SIZE, "%u\n", (counter & 0x3F));
+-}
+-
+-static DEVICE_ATTR(period, S_IRUGO | S_IWUSR, retu_wdt_period_show, \
+- retu_wdt_period_store);
+-static DEVICE_ATTR(counter, S_IRUGO, retu_wdt_counter_show, NULL);
+-
+ static int retu_wdt_open(struct inode *inode, struct file *file)
+ {
+ if (test_and_set_bit(0, &retu_wdt->users))
+@@ -232,18 +181,6 @@ static long retu_wdt_ioctl(struct file *
+ return 0;
+ }
+
+-/* Start kicking retu watchdog until user space starts doing the kicking */
+-static int __devinit retu_wdt_ping(void)
+-{
+-#ifdef CONFIG_WATCHDOG_NOWAYOUT
+- retu_modify_counter(RETU_WDT_MAX_TIMER);
+-#else
+- retu_wdt_ping_enable(retu_wdt);
+-#endif
+-
+- return 0;
+-}
+-
+ static const struct file_operations retu_wdt_fops = {
+ .owner = THIS_MODULE,
+ .write = retu_wdt_write,
+@@ -252,8 +189,6 @@ static const struct file_operations retu
+ .release = retu_wdt_release,
+ };
+
+-/*----------------------------------------------------------------------------*/
+-
+ static int __init retu_wdt_probe(struct platform_device *pdev)
+ {
+ struct retu_wdt_dev *wdev;
+@@ -265,18 +200,6 @@ static int __init retu_wdt_probe(struct
+
+ wdev->dev = &pdev->dev;
+
+- ret = device_create_file(&pdev->dev, &dev_attr_period);
+- if (ret) {
+- dev_err(&pdev->dev, "Error creating sysfs period\n");
+- goto free1;
+- }
+-
+- ret = device_create_file(&pdev->dev, &dev_attr_counter);
+- if (ret) {
+- dev_err(&pdev->dev, "Error creating sysfs counter\n");
+- goto free2;
+- }
+-
+ platform_set_drvdata(pdev, wdev);
+ retu_wdt = wdev;
+ wdev->retu_wdt_miscdev.parent = &pdev->dev;
+@@ -286,38 +209,21 @@ static int __init retu_wdt_probe(struct
+
+ ret = misc_register(&(wdev->retu_wdt_miscdev));
+ if (ret)
+- goto free3;
++ goto err_free_wdev;
+
+ INIT_DELAYED_WORK(&wdev->ping_work, retu_wdt_ping_work);
+
+- /* passed as module parameter? */
+- ret = retu_modify_counter(counter_param);
+- if (ret == -EINVAL) {
+- ret = retu_modify_counter(RETU_WDT_DEFAULT_TIMER);
+- dev_dbg(&pdev->dev, "Initializing to default value\n");
+- }
+-
+- /* Kick the watchdog for kernel booting to finish */
++ /* Kick the watchdog for kernel booting to finish.
++ * If nowayout is not set, we start the ping work. */
++#ifdef CONFIG_WATCHDOG_NOWAYOUT
+ retu_modify_counter(RETU_WDT_MAX_TIMER);
+-
+- ret = retu_wdt_ping();
+- if (ret < 0) {
+- dev_err(&pdev->dev, "Failed to ping\n");
+- goto free4;
+- }
++#else
++ retu_wdt_ping_enable(retu_wdt);
++#endif
+
+ return 0;
+
+-free4:
+- misc_deregister(&wdev->retu_wdt_miscdev);
+-
+-free3:
+- device_remove_file(&pdev->dev, &dev_attr_counter);
+-
+-free2:
+- device_remove_file(&pdev->dev, &dev_attr_period);
+-
+-free1:
++err_free_wdev:
+ kfree(wdev);
+
+ return ret;
+@@ -329,8 +235,6 @@ static int __devexit retu_wdt_remove(str
+
+ wdev = platform_get_drvdata(pdev);
+ misc_deregister(&wdev->retu_wdt_miscdev);
+- device_remove_file(&pdev->dev, &dev_attr_period);
+- device_remove_file(&pdev->dev, &dev_attr_counter);
+ cancel_delayed_work_sync(&wdev->ping_work);
+ kfree(wdev);
+
+@@ -356,9 +260,7 @@ static void __exit retu_wdt_exit(void)
+
+ module_init(retu_wdt_init);
+ module_exit(retu_wdt_exit);
+-module_param(counter_param, int, 0);
+
+ MODULE_DESCRIPTION("Retu WatchDog");
+ MODULE_AUTHOR("Amit Kucheria");
+ MODULE_LICENSE("GPL");
+-
diff --git a/target/linux/omap24xx/patches-2.6.38/535-cbus-retu-wdt-cleanup.patch b/target/linux/omap24xx/patches-2.6.38/535-cbus-retu-wdt-cleanup.patch
index 4b650686f..3ec78d1dd 100644
--- a/target/linux/omap24xx/patches-2.6.38/535-cbus-retu-wdt-cleanup.patch
+++ b/target/linux/omap24xx/patches-2.6.38/535-cbus-retu-wdt-cleanup.patch
@@ -1,73 +1,8 @@
Index: linux-2.6.38-rc6/drivers/cbus/retu-wdt.c
===================================================================
---- linux-2.6.38-rc6.orig/drivers/cbus/retu-wdt.c 2011-03-02 16:49:51.231863891 +0100
-+++ linux-2.6.38-rc6/drivers/cbus/retu-wdt.c 2011-03-02 16:53:47.189454637 +0100
-@@ -52,7 +52,6 @@ static DEFINE_MUTEX(retu_wdt_mutex);
-
- /* Current period of watchdog */
- static unsigned int period_val = RETU_WDT_DEFAULT_TIMER;
--static int counter_param = RETU_WDT_MAX_TIMER;
-
- struct retu_wdt_dev {
- struct device *dev;
-@@ -109,56 +108,6 @@ static void retu_wdt_ping_work(struct wo
- retu_wdt_ping_enable(wdev);
- }
-
--static ssize_t retu_wdt_period_show(struct device *dev,
-- struct device_attribute *attr, char *buf)
--{
-- /* Show current max counter */
-- return sprintf(buf, "%u\n", (u16)period_val);
--}
--
--/*
-- * Note: This inteface is non-standard and likely to disappear!
-- * Use /dev/watchdog instead, that's the standard.
-- */
--static ssize_t retu_wdt_period_store(struct device *dev,
-- struct device_attribute *attr,
-- const char *buf, size_t count)
--{
-- unsigned int new_period;
-- int ret;
--
--#ifdef CONFIG_WATCHDOG_NOWAYOUT
-- retu_wdt_ping_disable(retu_wdt);
--#endif
--
-- if (sscanf(buf, "%u", &new_period) != 1) {
-- printk(KERN_ALERT "retu_wdt_period_store: Invalid input\n");
-- return -EINVAL;
-- }
--
-- ret = retu_modify_counter(new_period);
-- if (ret < 0)
-- return ret;
--
-- return strnlen(buf, count);
--}
--
--static ssize_t retu_wdt_counter_show(struct device *dev,
-- struct device_attribute *attr, char *buf)
--{
-- u16 counter;
--
-- /* Show current value in watchdog counter */
-- counter = retu_read_reg(dev, RETU_REG_WATCHDOG);
--
-- /* Only the 5 LSB are important */
-- return snprintf(buf, PAGE_SIZE, "%u\n", (counter & 0x3F));
--}
--
--static DEVICE_ATTR(period, S_IRUGO | S_IWUSR, retu_wdt_period_show, \
-- retu_wdt_period_store);
--static DEVICE_ATTR(counter, S_IRUGO, retu_wdt_counter_show, NULL);
--
- static int retu_wdt_open(struct inode *inode, struct file *file)
- {
- if (test_and_set_bit(0, &retu_wdt->users))
-@@ -175,9 +124,9 @@ static int retu_wdt_release(struct inode
+--- linux-2.6.38-rc6.orig/drivers/cbus/retu-wdt.c 2011-03-04 15:46:21.312816961 +0100
++++ linux-2.6.38-rc6/drivers/cbus/retu-wdt.c 2011-03-04 15:46:54.658384947 +0100
+@@ -124,9 +124,9 @@ static int retu_wdt_release(struct inode
struct retu_wdt_dev *wdev = file->private_data;
#ifndef CONFIG_WATCHDOG_NOWAYOUT
@@ -79,116 +14,3 @@ Index: linux-2.6.38-rc6/drivers/cbus/retu-wdt.c
return 0;
}
-@@ -232,18 +181,6 @@ static long retu_wdt_ioctl(struct file *
- return 0;
- }
-
--/* Start kicking retu watchdog until user space starts doing the kicking */
--static int __devinit retu_wdt_ping(void)
--{
--#ifdef CONFIG_WATCHDOG_NOWAYOUT
-- retu_modify_counter(RETU_WDT_MAX_TIMER);
--#else
-- retu_wdt_ping_enable(retu_wdt);
--#endif
--
-- return 0;
--}
--
- static const struct file_operations retu_wdt_fops = {
- .owner = THIS_MODULE,
- .write = retu_wdt_write,
-@@ -252,8 +189,6 @@ static const struct file_operations retu
- .release = retu_wdt_release,
- };
-
--/*----------------------------------------------------------------------------*/
--
- static int __init retu_wdt_probe(struct platform_device *pdev)
- {
- struct retu_wdt_dev *wdev;
-@@ -265,18 +200,6 @@ static int __init retu_wdt_probe(struct
-
- wdev->dev = &pdev->dev;
-
-- ret = device_create_file(&pdev->dev, &dev_attr_period);
-- if (ret) {
-- dev_err(&pdev->dev, "Error creating sysfs period\n");
-- goto free1;
-- }
--
-- ret = device_create_file(&pdev->dev, &dev_attr_counter);
-- if (ret) {
-- dev_err(&pdev->dev, "Error creating sysfs counter\n");
-- goto free2;
-- }
--
- platform_set_drvdata(pdev, wdev);
- retu_wdt = wdev;
- wdev->retu_wdt_miscdev.parent = &pdev->dev;
-@@ -286,38 +209,21 @@ static int __init retu_wdt_probe(struct
-
- ret = misc_register(&(wdev->retu_wdt_miscdev));
- if (ret)
-- goto free3;
-+ goto err_free_wdev;
-
- INIT_DELAYED_WORK(&wdev->ping_work, retu_wdt_ping_work);
-
-- /* passed as module parameter? */
-- ret = retu_modify_counter(counter_param);
-- if (ret == -EINVAL) {
-- ret = retu_modify_counter(RETU_WDT_DEFAULT_TIMER);
-- dev_dbg(&pdev->dev, "Initializing to default value\n");
-- }
--
-- /* Kick the watchdog for kernel booting to finish */
-+ /* Kick the watchdog for kernel booting to finish.
-+ * If nowayout is not set, we start the ping work. */
-+#ifdef CONFIG_WATCHDOG_NOWAYOUT
- retu_modify_counter(RETU_WDT_MAX_TIMER);
--
-- ret = retu_wdt_ping();
-- if (ret < 0) {
-- dev_err(&pdev->dev, "Failed to ping\n");
-- goto free4;
-- }
-+#else
-+ retu_wdt_ping_enable(retu_wdt);
-+#endif
-
- return 0;
-
--free4:
-- misc_deregister(&wdev->retu_wdt_miscdev);
--
--free3:
-- device_remove_file(&pdev->dev, &dev_attr_counter);
--
--free2:
-- device_remove_file(&pdev->dev, &dev_attr_period);
--
--free1:
-+err_free_wdev:
- kfree(wdev);
-
- return ret;
-@@ -329,8 +235,6 @@ static int __devexit retu_wdt_remove(str
-
- wdev = platform_get_drvdata(pdev);
- misc_deregister(&wdev->retu_wdt_miscdev);
-- device_remove_file(&pdev->dev, &dev_attr_period);
-- device_remove_file(&pdev->dev, &dev_attr_counter);
- cancel_delayed_work_sync(&wdev->ping_work);
- kfree(wdev);
-
-@@ -356,9 +260,7 @@ static void __exit retu_wdt_exit(void)
-
- module_init(retu_wdt_init);
- module_exit(retu_wdt_exit);
--module_param(counter_param, int, 0);
-
- MODULE_DESCRIPTION("Retu WatchDog");
- MODULE_AUTHOR("Amit Kucheria");
- MODULE_LICENSE("GPL");
--
diff --git a/target/linux/omap24xx/patches-2.6.38/540-cbus-retu-wdt-remove-static-variables.patch b/target/linux/omap24xx/patches-2.6.38/540-cbus-retu-wdt-remove-static-variables.patch
new file mode 100644
index 000000000..14d31112e
--- /dev/null
+++ b/target/linux/omap24xx/patches-2.6.38/540-cbus-retu-wdt-remove-static-variables.patch
@@ -0,0 +1,191 @@
+Index: linux-2.6.38-rc6/drivers/cbus/retu-wdt.c
+===================================================================
+--- linux-2.6.38-rc6.orig/drivers/cbus/retu-wdt.c 2011-03-04 16:22:03.524019824 +0100
++++ linux-2.6.38-rc6/drivers/cbus/retu-wdt.c 2011-03-04 16:22:31.186357952 +0100
+@@ -7,6 +7,8 @@
+ *
+ * Written by Amit Kucheria <amit.kucheria@nokia.com>
+ *
++ * Cleanups by Michael Buesch <mb@bu3sch.de> (C) 2011
++ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+@@ -48,37 +50,31 @@
+ #define RETU_WDT_DEFAULT_TIMER 32
+ #define RETU_WDT_MAX_TIMER 63
+
+-static DEFINE_MUTEX(retu_wdt_mutex);
+-
+-/* Current period of watchdog */
+-static unsigned int period_val = RETU_WDT_DEFAULT_TIMER;
+-
+ struct retu_wdt_dev {
+ struct device *dev;
++ unsigned int period_val; /* Current period of watchdog */
+ unsigned long users;
+- struct miscdevice retu_wdt_miscdev;
++ struct miscdevice miscdev;
+ struct delayed_work ping_work;
++ struct mutex mutex;
+ };
+
+-static struct retu_wdt_dev *retu_wdt;
+
+-static int _retu_modify_counter(unsigned int new)
++static inline void _retu_modify_counter(struct retu_wdt_dev *wdev,
++ unsigned int new)
+ {
+- if (retu_wdt)
+- retu_write_reg(retu_wdt->dev, RETU_REG_WATCHDOG, (u16)new);
+-
+- return 0;
++ retu_write_reg(wdev->dev, RETU_REG_WATCHDOG, (u16)new);
+ }
+
+-static int retu_modify_counter(unsigned int new)
++static int retu_modify_counter(struct retu_wdt_dev *wdev, unsigned int new)
+ {
+ if (new < RETU_WDT_MIN_TIMER || new > RETU_WDT_MAX_TIMER)
+ return -EINVAL;
+
+- mutex_lock(&retu_wdt_mutex);
+- period_val = new;
+- _retu_modify_counter(period_val);
+- mutex_unlock(&retu_wdt_mutex);
++ mutex_lock(&wdev->mutex);
++ wdev->period_val = new;
++ _retu_modify_counter(wdev, wdev->period_val);
++ mutex_unlock(&wdev->mutex);
+
+ return 0;
+ }
+@@ -90,14 +86,14 @@ static int retu_modify_counter(unsigned
+ */
+ static void retu_wdt_ping_enable(struct retu_wdt_dev *wdev)
+ {
+- _retu_modify_counter(RETU_WDT_MAX_TIMER);
++ _retu_modify_counter(wdev, RETU_WDT_MAX_TIMER);
+ schedule_delayed_work(&wdev->ping_work,
+ round_jiffies_relative(RETU_WDT_DEFAULT_TIMER * HZ));
+ }
+
+ static void retu_wdt_ping_disable(struct retu_wdt_dev *wdev)
+ {
+- _retu_modify_counter(RETU_WDT_MAX_TIMER);
++ _retu_modify_counter(wdev, RETU_WDT_MAX_TIMER);
+ cancel_delayed_work_sync(&wdev->ping_work);
+ }
+
+@@ -110,18 +106,21 @@ static void retu_wdt_ping_work(struct wo
+
+ static int retu_wdt_open(struct inode *inode, struct file *file)
+ {
+- if (test_and_set_bit(0, &retu_wdt->users))
++ struct miscdevice *mdev = file->private_data;
++ struct retu_wdt_dev *wdev = container_of(mdev, struct retu_wdt_dev, miscdev);
++
++ if (test_and_set_bit(0, &wdev->users))
+ return -EBUSY;
+
+- file->private_data = (void *)retu_wdt;
+- retu_wdt_ping_disable(retu_wdt);
++ retu_wdt_ping_disable(wdev);
+
+ return nonseekable_open(inode, file);
+ }
+
+ static int retu_wdt_release(struct inode *inode, struct file *file)
+ {
+- struct retu_wdt_dev *wdev = file->private_data;
++ struct miscdevice *mdev = file->private_data;
++ struct retu_wdt_dev *wdev = container_of(mdev, struct retu_wdt_dev, miscdev);
+
+ #ifndef CONFIG_WATCHDOG_NOWAYOUT
+ retu_wdt_ping_enable(wdev);
+@@ -134,8 +133,11 @@ static int retu_wdt_release(struct inode
+ static ssize_t retu_wdt_write(struct file *file, const char __user *data,
+ size_t len, loff_t *ppos)
+ {
++ struct miscdevice *mdev = file->private_data;
++ struct retu_wdt_dev *wdev = container_of(mdev, struct retu_wdt_dev, miscdev);
++
+ if (len)
+- retu_modify_counter(RETU_WDT_MAX_TIMER);
++ retu_modify_counter(wdev, RETU_WDT_MAX_TIMER);
+
+ return len;
+ }
+@@ -143,6 +145,8 @@ static ssize_t retu_wdt_write(struct fil
+ static long retu_wdt_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+ {
++ struct miscdevice *mdev = file->private_data;
++ struct retu_wdt_dev *wdev = container_of(mdev, struct retu_wdt_dev, miscdev);
+ int new_margin;
+
+ static struct watchdog_info ident = {
+@@ -167,15 +171,15 @@ static long retu_wdt_ioctl(struct file *
+ return put_user(omap_prcm_get_reset_sources(),
+ (int __user *)arg);
+ case WDIOC_KEEPALIVE:
+- retu_modify_counter(RETU_WDT_MAX_TIMER);
++ retu_modify_counter(wdev, RETU_WDT_MAX_TIMER);
+ break;
+ case WDIOC_SETTIMEOUT:
+ if (get_user(new_margin, (int __user *)arg))
+ return -EFAULT;
+- retu_modify_counter(new_margin);
++ retu_modify_counter(wdev, new_margin);
+ /* Fall through */
+ case WDIOC_GETTIMEOUT:
+- return put_user(period_val, (int __user *)arg);
++ return put_user(wdev->period_val, (int __user *)arg);
+ }
+
+ return 0;
+@@ -199,15 +203,17 @@ static int __init retu_wdt_probe(struct
+ return -ENOMEM;
+
+ wdev->dev = &pdev->dev;
++ wdev->period_val = RETU_WDT_DEFAULT_TIMER;
++ mutex_init(&wdev->mutex);
+
+ platform_set_drvdata(pdev, wdev);
+- retu_wdt = wdev;
+- wdev->retu_wdt_miscdev.parent = &pdev->dev;
+- wdev->retu_wdt_miscdev.minor = WATCHDOG_MINOR;
+- wdev->retu_wdt_miscdev.name = "watchdog";
+- wdev->retu_wdt_miscdev.fops = &retu_wdt_fops;
+
+- ret = misc_register(&(wdev->retu_wdt_miscdev));
++ wdev->miscdev.parent = &pdev->dev;
++ wdev->miscdev.minor = WATCHDOG_MINOR;
++ wdev->miscdev.name = "watchdog";
++ wdev->miscdev.fops = &retu_wdt_fops;
++
++ ret = misc_register(&wdev->miscdev);
+ if (ret)
+ goto err_free_wdev;
+
+@@ -216,9 +222,9 @@ static int __init retu_wdt_probe(struct
+ /* Kick the watchdog for kernel booting to finish.
+ * If nowayout is not set, we start the ping work. */
+ #ifdef CONFIG_WATCHDOG_NOWAYOUT
+- retu_modify_counter(RETU_WDT_MAX_TIMER);
++ retu_modify_counter(wdev, RETU_WDT_MAX_TIMER);
+ #else
+- retu_wdt_ping_enable(retu_wdt);
++ retu_wdt_ping_enable(wdev);
+ #endif
+
+ return 0;
+@@ -234,7 +240,7 @@ static int __devexit retu_wdt_remove(str
+ struct retu_wdt_dev *wdev;
+
+ wdev = platform_get_drvdata(pdev);
+- misc_deregister(&wdev->retu_wdt_miscdev);
++ misc_deregister(&wdev->miscdev);
+ cancel_delayed_work_sync(&wdev->ping_work);
+ kfree(wdev);
+
diff --git a/target/linux/omap24xx/patches-2.6.38/545-cbus-retu-wdt-constify-info-struct.patch b/target/linux/omap24xx/patches-2.6.38/545-cbus-retu-wdt-constify-info-struct.patch
new file mode 100644
index 000000000..8d6d2bb8c
--- /dev/null
+++ b/target/linux/omap24xx/patches-2.6.38/545-cbus-retu-wdt-constify-info-struct.patch
@@ -0,0 +1,13 @@
+Index: linux-2.6.38-rc6/drivers/cbus/retu-wdt.c
+===================================================================
+--- linux-2.6.38-rc6.orig/drivers/cbus/retu-wdt.c 2011-03-04 16:21:39.106113985 +0100
++++ linux-2.6.38-rc6/drivers/cbus/retu-wdt.c 2011-03-04 16:21:48.503540758 +0100
+@@ -149,7 +149,7 @@ static long retu_wdt_ioctl(struct file *
+ struct retu_wdt_dev *wdev = container_of(mdev, struct retu_wdt_dev, miscdev);
+ int new_margin;
+
+- static struct watchdog_info ident = {
++ static const struct watchdog_info ident = {
+ .identity = "Retu Watchdog",
+ .options = WDIOF_SETTIMEOUT,
+ .firmware_version = 0,
--
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