diff options
Diffstat (limited to 'target')
3 files changed, 262 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.4/011-1-fix-bld-errs-hwmon-sch56xx-Drop-watchdog-driver-data-reference-count-callbacks.patch b/target/linux/ipq806x/patches-4.4/011-1-fix-bld-errs-hwmon-sch56xx-Drop-watchdog-driver-data-reference-count-callbacks.patch new file mode 100644 index 0000000000..c78202b325 --- /dev/null +++ b/target/linux/ipq806x/patches-4.4/011-1-fix-bld-errs-hwmon-sch56xx-Drop-watchdog-driver-data-reference-count-callbacks.patch @@ -0,0 +1,95 @@ +From 3b8d058cfe6a3b14abee324f4c4b33e64bf61aeb Mon Sep 17 00:00:00 2001 +From: Guenter Roeck <linux@roeck-us.net> +Date: Fri, 25 Dec 2015 16:01:45 -0800 +Subject: hwmon: (sch56xx) Drop watchdog driver data reference count callbacks + +Reference counting is now implemented in the watchdog core and no longer +required in watchdog drivers. + +Signed-off-by: Guenter Roeck <linux@roeck-us.net> +Signed-off-by: Wim Van Sebroeck <wim@iguana.be> +--- + drivers/hwmon/sch56xx-common.c | 31 +------------------------------ + 1 file changed, 1 insertion(+), 30 deletions(-) + +--- a/drivers/hwmon/sch56xx-common.c ++++ b/drivers/hwmon/sch56xx-common.c +@@ -30,7 +30,6 @@ + #include <linux/watchdog.h> + #include <linux/miscdevice.h> + #include <linux/uaccess.h> +-#include <linux/kref.h> + #include <linux/slab.h> + #include "sch56xx-common.h" + +@@ -67,7 +66,6 @@ MODULE_PARM_DESC(nowayout, "Watchdog can + struct sch56xx_watchdog_data { + u16 addr; + struct mutex *io_lock; +- struct kref kref; + struct watchdog_info wdinfo; + struct watchdog_device wddev; + u8 watchdog_preset; +@@ -258,15 +256,6 @@ EXPORT_SYMBOL(sch56xx_read_virtual_reg12 + * Watchdog routines + */ + +-/* Release our data struct when we're unregistered *and* +- all references to our watchdog device are released */ +-static void watchdog_release_resources(struct kref *r) +-{ +- struct sch56xx_watchdog_data *data = +- container_of(r, struct sch56xx_watchdog_data, kref); +- kfree(data); +-} +- + static int watchdog_set_timeout(struct watchdog_device *wddev, + unsigned int timeout) + { +@@ -395,28 +384,12 @@ static int watchdog_stop(struct watchdog + return 0; + } + +-static void watchdog_ref(struct watchdog_device *wddev) +-{ +- struct sch56xx_watchdog_data *data = watchdog_get_drvdata(wddev); +- +- kref_get(&data->kref); +-} +- +-static void watchdog_unref(struct watchdog_device *wddev) +-{ +- struct sch56xx_watchdog_data *data = watchdog_get_drvdata(wddev); +- +- kref_put(&data->kref, watchdog_release_resources); +-} +- + static const struct watchdog_ops watchdog_ops = { + .owner = THIS_MODULE, + .start = watchdog_start, + .stop = watchdog_stop, + .ping = watchdog_trigger, + .set_timeout = watchdog_set_timeout, +- .ref = watchdog_ref, +- .unref = watchdog_unref, + }; + + struct sch56xx_watchdog_data *sch56xx_watchdog_register(struct device *parent, +@@ -448,7 +421,6 @@ struct sch56xx_watchdog_data *sch56xx_wa + + data->addr = addr; + data->io_lock = io_lock; +- kref_init(&data->kref); + + strlcpy(data->wdinfo.identity, "sch56xx watchdog", + sizeof(data->wdinfo.identity)); +@@ -494,8 +466,7 @@ EXPORT_SYMBOL(sch56xx_watchdog_register) + void sch56xx_watchdog_unregister(struct sch56xx_watchdog_data *data) + { + watchdog_unregister_device(&data->wddev); +- kref_put(&data->kref, watchdog_release_resources); +- /* Don't touch data after this it may have been free-ed! */ ++ kfree(data); + } + EXPORT_SYMBOL(sch56xx_watchdog_unregister); + diff --git a/target/linux/ipq806x/patches-4.4/011-2-fix-bld-errs-watchdog-da9052_wdt-Drop-reference-counting.patch b/target/linux/ipq806x/patches-4.4/011-2-fix-bld-errs-watchdog-da9052_wdt-Drop-reference-counting.patch new file mode 100644 index 0000000000..501bd13636 --- /dev/null +++ b/target/linux/ipq806x/patches-4.4/011-2-fix-bld-errs-watchdog-da9052_wdt-Drop-reference-counting.patch @@ -0,0 +1,87 @@ +From 756d1e9247dff6d416b0c9e073247f5e808bb5fa Mon Sep 17 00:00:00 2001 +From: Guenter Roeck <linux@roeck-us.net> +Date: Fri, 25 Dec 2015 16:01:43 -0800 +Subject: watchdog: da9052_wdt: Drop reference counting + +Reference counting is now implemented in the watchdog core and no longer +required in watchdog drivers. + +Since it was implememented a no-op, and since the local memory is allocated +with devm_kzalloc(), the reference counting code in the driver really did +not really work anyway, and this patch effectively fixes a bug which could +cause a crash on unloading if the watchdog device was still open. + +Signed-off-by: Guenter Roeck <linux@roeck-us.net> +Signed-off-by: Wim Van Sebroeck <wim@iguana.be> +--- + drivers/watchdog/da9052_wdt.c | 24 ------------------------ + 1 file changed, 24 deletions(-) + +--- a/drivers/watchdog/da9052_wdt.c ++++ b/drivers/watchdog/da9052_wdt.c +@@ -31,7 +31,6 @@ + struct da9052_wdt_data { + struct watchdog_device wdt; + struct da9052 *da9052; +- struct kref kref; + unsigned long jpast; + }; + +@@ -51,10 +50,6 @@ static const struct { + }; + + +-static void da9052_wdt_release_resources(struct kref *r) +-{ +-} +- + static int da9052_wdt_set_timeout(struct watchdog_device *wdt_dev, + unsigned int timeout) + { +@@ -104,20 +99,6 @@ static int da9052_wdt_set_timeout(struct + return 0; + } + +-static void da9052_wdt_ref(struct watchdog_device *wdt_dev) +-{ +- struct da9052_wdt_data *driver_data = watchdog_get_drvdata(wdt_dev); +- +- kref_get(&driver_data->kref); +-} +- +-static void da9052_wdt_unref(struct watchdog_device *wdt_dev) +-{ +- struct da9052_wdt_data *driver_data = watchdog_get_drvdata(wdt_dev); +- +- kref_put(&driver_data->kref, da9052_wdt_release_resources); +-} +- + static int da9052_wdt_start(struct watchdog_device *wdt_dev) + { + return da9052_wdt_set_timeout(wdt_dev, wdt_dev->timeout); +@@ -170,8 +151,6 @@ static const struct watchdog_ops da9052_ + .stop = da9052_wdt_stop, + .ping = da9052_wdt_ping, + .set_timeout = da9052_wdt_set_timeout, +- .ref = da9052_wdt_ref, +- .unref = da9052_wdt_unref, + }; + + +@@ -198,8 +177,6 @@ static int da9052_wdt_probe(struct platf + da9052_wdt->parent = &pdev->dev; + watchdog_set_drvdata(da9052_wdt, driver_data); + +- kref_init(&driver_data->kref); +- + ret = da9052_reg_update(da9052, DA9052_CONTROL_D_REG, + DA9052_CONTROLD_TWDSCALE, 0); + if (ret < 0) { +@@ -225,7 +202,6 @@ static int da9052_wdt_remove(struct plat + struct da9052_wdt_data *driver_data = platform_get_drvdata(pdev); + + watchdog_unregister_device(&driver_data->wdt); +- kref_put(&driver_data->kref, da9052_wdt_release_resources); + + return 0; + } diff --git a/target/linux/ipq806x/patches-4.4/011-3-fix-bld-errs-watchdog-da9055_wdt-Drop-reference-counting.patch b/target/linux/ipq806x/patches-4.4/011-3-fix-bld-errs-watchdog-da9055_wdt-Drop-reference-counting.patch new file mode 100644 index 0000000000..3cf723a9bc --- /dev/null +++ b/target/linux/ipq806x/patches-4.4/011-3-fix-bld-errs-watchdog-da9055_wdt-Drop-reference-counting.patch @@ -0,0 +1,80 @@ +From 43f676ace2e0591718ff493d290bc49b35ec2ffc Mon Sep 17 00:00:00 2001 +From: Guenter Roeck <linux@roeck-us.net> +Date: Fri, 25 Dec 2015 16:01:44 -0800 +Subject: watchdog: da9055_wdt: Drop reference counting + +Reference counting is now implemented in the watchdog core and no longer +required in watchdog drivers. + +Since it was implememented a no-op, and since the local memory is allocated +with devm_kzalloc(), the reference counting code in the driver really did +not really work anyway, and this patch effectively fixes a bug which could +cause a crash on unloading if the watchdog device was still open. + +Signed-off-by: Guenter Roeck <linux@roeck-us.net> +Signed-off-by: Wim Van Sebroeck <wim@iguana.be> +--- + drivers/watchdog/da9055_wdt.c | 24 ------------------------ + 1 file changed, 24 deletions(-) + +--- a/drivers/watchdog/da9055_wdt.c ++++ b/drivers/watchdog/da9055_wdt.c +@@ -35,7 +35,6 @@ MODULE_PARM_DESC(nowayout, + struct da9055_wdt_data { + struct watchdog_device wdt; + struct da9055 *da9055; +- struct kref kref; + }; + + static const struct { +@@ -99,24 +98,6 @@ static int da9055_wdt_ping(struct watchd + DA9055_WATCHDOG_MASK, 1); + } + +-static void da9055_wdt_release_resources(struct kref *r) +-{ +-} +- +-static void da9055_wdt_ref(struct watchdog_device *wdt_dev) +-{ +- struct da9055_wdt_data *driver_data = watchdog_get_drvdata(wdt_dev); +- +- kref_get(&driver_data->kref); +-} +- +-static void da9055_wdt_unref(struct watchdog_device *wdt_dev) +-{ +- struct da9055_wdt_data *driver_data = watchdog_get_drvdata(wdt_dev); +- +- kref_put(&driver_data->kref, da9055_wdt_release_resources); +-} +- + static int da9055_wdt_start(struct watchdog_device *wdt_dev) + { + return da9055_wdt_set_timeout(wdt_dev, wdt_dev->timeout); +@@ -138,8 +119,6 @@ static const struct watchdog_ops da9055_ + .stop = da9055_wdt_stop, + .ping = da9055_wdt_ping, + .set_timeout = da9055_wdt_set_timeout, +- .ref = da9055_wdt_ref, +- .unref = da9055_wdt_unref, + }; + + static int da9055_wdt_probe(struct platform_device *pdev) +@@ -165,8 +144,6 @@ static int da9055_wdt_probe(struct platf + watchdog_set_nowayout(da9055_wdt, nowayout); + watchdog_set_drvdata(da9055_wdt, driver_data); + +- kref_init(&driver_data->kref); +- + ret = da9055_wdt_stop(da9055_wdt); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to stop watchdog, %d\n", ret); +@@ -189,7 +166,6 @@ static int da9055_wdt_remove(struct plat + struct da9055_wdt_data *driver_data = platform_get_drvdata(pdev); + + watchdog_unregister_device(&driver_data->wdt); +- kref_put(&driver_data->kref, da9055_wdt_release_resources); + + return 0; + } |