Merge branch 'linus'

Conflicts:

	drivers/scsi/ipr.c

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

7 files changed, 282 insertions, 26 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index fc723e595cd5..d57118da73ff 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1313,7 +1313,7 @@ noinline struct pt_regs * __devinit __attribute__((weak)) idle_regs(struct pt_re
         return regs;
 }
 
-struct task_struct * __devinit fork_idle(int cpu)
+struct task_struct * __cpuinit fork_idle(int cpu)
 {
         struct task_struct *task;
         struct pt_regs regs;
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index d27b25855743..475e8a71bcdc 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -39,6 +39,7 @@ void dynamic_irq_init(unsigned int irq)
         desc->chip = &no_irq_chip;
         desc->handle_irq = handle_bad_irq;
         desc->depth = 1;
+        desc->msi_desc = NULL;
         desc->handler_data = NULL;
         desc->chip_data = NULL;
         desc->action = NULL;
@@ -74,6 +75,9 @@ void dynamic_irq_cleanup(unsigned int irq)
                 WARN_ON(1);
                 return;
         }
+        desc->msi_desc = NULL;
+        desc->handler_data = NULL;
+        desc->chip_data = NULL;
         desc->handle_irq = handle_bad_irq;
         desc->chip = &no_irq_chip;
         spin_unlock_irqrestore(&desc->lock, flags);
@@ -162,6 +166,30 @@ int set_irq_data(unsigned int irq, void *data)
 EXPORT_SYMBOL(set_irq_data);
 
 /**
+ *      set_irq_data - set irq type data for an irq
+ *      @irq:   Interrupt number
+ *      @data:  Pointer to interrupt specific data
+ *
+ *      Set the hardware irq controller data for an irq
+ */
+int set_irq_msi(unsigned int irq, struct msi_desc *entry)
+{
+        struct irq_desc *desc;
+        unsigned long flags;
+
+        if (irq >= NR_IRQS) {
+                printk(KERN_ERR
+                       "Trying to install msi data for IRQ%d\n", irq);
+                return -EINVAL;
+        }
+        desc = irq_desc + irq;
+        spin_lock_irqsave(&desc->lock, flags);
+        desc->msi_desc = entry;
+        spin_unlock_irqrestore(&desc->lock, flags);
+        return 0;
+}
+
+/**
  *      set_irq_chip_data - set irq chip data for an irq
  *      @irq:   Interrupt number
  *      @data:  Pointer to chip specific data
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 8b961adc3bd2..c4b7ed1cebf7 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -482,3 +482,89 @@ int request_irq(unsigned int irq, irq_handler_t handler,
         return retval;
 }
 EXPORT_SYMBOL(request_irq);
+
+/*
+ * Device resource management aware IRQ request/free implementation.
+ */
+struct irq_devres {
+        unsigned int irq;
+        void *dev_id;
+};
+
+static void devm_irq_release(struct device *dev, void *res)
+{
+        struct irq_devres *this = res;
+
+        free_irq(this->irq, this->dev_id);
+}
+
+static int devm_irq_match(struct device *dev, void *res, void *data)
+{
+        struct irq_devres *this = res, *match = data;
+
+        return this->irq == match->irq && this->dev_id == match->dev_id;
+}
+
+/**
+ *      devm_request_irq - allocate an interrupt line for a managed device
+ *      @dev: device to request interrupt for
+ *      @irq: Interrupt line to allocate
+ *      @handler: Function to be called when the IRQ occurs
+ *      @irqflags: Interrupt type flags
+ *      @devname: An ascii name for the claiming device
+ *      @dev_id: A cookie passed back to the handler function
+ *
+ *      Except for the extra @dev argument, this function takes the
+ *      same arguments and performs the same function as
+ *      request_irq().  IRQs requested with this function will be
+ *      automatically freed on driver detach.
+ *
+ *      If an IRQ allocated with this function needs to be freed
+ *      separately, dev_free_irq() must be used.
+ */
+int devm_request_irq(struct device *dev, unsigned int irq,
+                     irq_handler_t handler, unsigned long irqflags,
+                     const char *devname, void *dev_id)
+{
+        struct irq_devres *dr;
+        int rc;
+
+        dr = devres_alloc(devm_irq_release, sizeof(struct irq_devres),
+                          GFP_KERNEL);
+        if (!dr)
+                return -ENOMEM;
+
+        rc = request_irq(irq, handler, irqflags, devname, dev_id);
+        if (rc) {
+                kfree(dr);
+                return rc;
+        }
+
+        dr->irq = irq;
+        dr->dev_id = dev_id;
+        devres_add(dev, dr);
+
+        return 0;
+}
+EXPORT_SYMBOL(devm_request_irq);
+
+/**
+ *      devm_free_irq - free an interrupt
+ *      @dev: device to free interrupt for
+ *      @irq: Interrupt line to free
+ *      @dev_id: Device identity to free
+ *
+ *      Except for the extra @dev argument, this function takes the
+ *      same arguments and performs the same function as free_irq().
+ *      This function instead of free_irq() should be used to manually
+ *      free IRQs allocated with dev_request_irq().
+ */
+void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id)
+{
+        struct irq_devres match_data = { irq, dev_id };
+
+        free_irq(irq, dev_id);
+        WARN_ON(devres_destroy(dev, devm_irq_release, devm_irq_match,
+                               &match_data));
+}
+EXPORT_SYMBOL(devm_free_irq);
diff --git a/kernel/module.c b/kernel/module.c
index d0f2260a0210..8a94e054230c 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -537,6 +537,8 @@ static int already_uses(struct module *a, struct module *b)
 static int use_module(struct module *a, struct module *b)
 {
         struct module_use *use;
+        int no_warn;
+
         if (b == NULL || already_uses(a, b)) return 1;
 
         if (!strong_try_module_get(b))
@@ -552,6 +554,7 @@ static int use_module(struct module *a, struct module *b)
 
         use->module_which_uses = a;
         list_add(&use->list, &b->modules_which_use_me);
+        no_warn = sysfs_create_link(b->holders_dir, &a->mkobj.kobj, a->name);
         return 1;
 }
 
@@ -569,6 +572,7 @@ static void module_unload_free(struct module *mod)
                                 module_put(i);
                                 list_del(&use->list);
                                 kfree(use);
+                                sysfs_remove_link(i->holders_dir, mod->name);
                                 /* There can be at most one match. */
                                 break;
                         }
@@ -1106,9 +1110,7 @@ static void module_remove_modinfo_attrs(struct module *mod)
         kfree(mod->modinfo_attrs);
 }
 
-static int mod_sysfs_setup(struct module *mod,
-                           struct kernel_param *kparam,
-                           unsigned int num_params)
+static int mod_sysfs_init(struct module *mod)
 {
         int err;
 
@@ -1125,21 +1127,30 @@ static int mod_sysfs_setup(struct module *mod,
         kobj_set_kset_s(&mod->mkobj, module_subsys);
         mod->mkobj.mod = mod;
 
-        /* delay uevent until full sysfs population */
         kobject_init(&mod->mkobj.kobj);
+
+out:
+        return err;
+}
+
+static int mod_sysfs_setup(struct module *mod,
+                           struct kernel_param *kparam,
+                           unsigned int num_params)
+{
+        int err;
+
+        /* delay uevent until full sysfs population */
         err = kobject_add(&mod->mkobj.kobj);
         if (err)
                 goto out;
 
-        mod->drivers_dir = kobject_add_dir(&mod->mkobj.kobj, "drivers");
-        if (!mod->drivers_dir) {
-                err = -ENOMEM;
+        mod->holders_dir = kobject_add_dir(&mod->mkobj.kobj, "holders");
+        if (!mod->holders_dir)
                 goto out_unreg;
-        }
 
         err = module_param_sysfs_setup(mod, kparam, num_params);
         if (err)
-                goto out_unreg_drivers;
+                goto out_unreg_holders;
 
         err = module_add_modinfo_attrs(mod);
         if (err)
@@ -1150,8 +1161,8 @@ static int mod_sysfs_setup(struct module *mod,
 
 out_unreg_param:
         module_param_sysfs_remove(mod);
-out_unreg_drivers:
-        kobject_unregister(mod->drivers_dir);
+out_unreg_holders:
+        kobject_unregister(mod->holders_dir);
 out_unreg:
         kobject_del(&mod->mkobj.kobj);
         kobject_put(&mod->mkobj.kobj);
@@ -1163,7 +1174,10 @@ static void mod_kobject_remove(struct module *mod)
 {
         module_remove_modinfo_attrs(mod);
         module_param_sysfs_remove(mod);
-        kobject_unregister(mod->drivers_dir);
+        if (mod->mkobj.drivers_dir)
+                kobject_unregister(mod->mkobj.drivers_dir);
+        if (mod->holders_dir)
+                kobject_unregister(mod->holders_dir);
 
         kobject_unregister(&mod->mkobj.kobj);
 }
@@ -1768,6 +1782,10 @@ static struct module *load_module(void __user *umod,
         /* Now we've moved module, initialize linked lists, etc. */
         module_unload_init(mod);
 
+        /* Initialize kobject, so we can reference it. */
+        if (mod_sysfs_init(mod) != 0)
+                goto cleanup;
+
         /* Set up license info based on the info section */
         set_license(mod, get_modinfo(sechdrs, infoindex, "license"));
 
@@ -2340,19 +2358,43 @@ static char *make_driver_name(struct device_driver *drv)
         return driver_name;
 }
 
+static void module_create_drivers_dir(struct module_kobject *mk)
+{
+        if (!mk || mk->drivers_dir)
+                return;
+
+        mk->drivers_dir = kobject_add_dir(&mk->kobj, "drivers");
+}
+
 void module_add_driver(struct module *mod, struct device_driver *drv)
 {
         char *driver_name;
         int no_warn;
+        struct module_kobject *mk = NULL;
+
+        if (!drv)
+                return;
+
+        if (mod)
+                mk = &mod->mkobj;
+        else if (drv->mod_name) {
+                struct kobject *mkobj;
+
+                /* Lookup built-in module entry in /sys/modules */
+                mkobj = kset_find_obj(&module_subsys.kset, drv->mod_name);
+                if (mkobj)
+                        mk = container_of(mkobj, struct module_kobject, kobj);
+        }
 
-        if (!mod || !drv)
+        if (!mk)
                 return;
 
         /* Don't check return codes; these calls are idempotent */
-        no_warn = sysfs_create_link(&drv->kobj, &mod->mkobj.kobj, "module");
+        no_warn = sysfs_create_link(&drv->kobj, &mk->kobj, "module");
         driver_name = make_driver_name(drv);
         if (driver_name) {
-                no_warn = sysfs_create_link(mod->drivers_dir, &drv->kobj,
+                module_create_drivers_dir(mk);
+                no_warn = sysfs_create_link(mk->drivers_dir, &drv->kobj,
                                             driver_name);
                 kfree(driver_name);
         }
@@ -2367,10 +2409,10 @@ void module_remove_driver(struct device_driver *drv)
                 return;
 
         sysfs_remove_link(&drv->kobj, "module");
-        if (drv->owner && drv->owner->drivers_dir) {
+        if (drv->owner && drv->owner->mkobj.drivers_dir) {
                 driver_name = make_driver_name(drv);
                 if (driver_name) {
-                        sysfs_remove_link(drv->owner->drivers_dir,
+                        sysfs_remove_link(drv->owner->mkobj.drivers_dir,
                                           driver_name);
                         kfree(driver_name);
                 }
diff --git a/kernel/params.c b/kernel/params.c
index 718945da8f58..553cf7d6a4be 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -30,6 +30,8 @@
 #define DEBUGP(fmt, a...)
 #endif
 
+static struct kobj_type module_ktype;
+
 static inline char dash2underscore(char c)
 {
         if (c == '-')
@@ -561,14 +563,11 @@ static void __init kernel_param_sysfs_setup(const char *name,
         mk->mod = THIS_MODULE;
         kobj_set_kset_s(mk, module_subsys);
         kobject_set_name(&mk->kobj, name);
-        ret = kobject_register(&mk->kobj);
+        kobject_init(&mk->kobj);
+        ret = kobject_add(&mk->kobj);
         BUG_ON(ret < 0);
-
-        /* no need to keep the kobject if no parameter is exported */
-        if (!param_sysfs_setup(mk, kparam, num_params, name_skip)) {
-                kobject_unregister(&mk->kobj);
-                kfree(mk);
-        }
+        param_sysfs_setup(mk, kparam, num_params, name_skip);
+        kobject_uevent(&mk->kobj, KOBJ_ADD);
 }
 
 /*
@@ -674,6 +673,19 @@ static struct sysfs_ops module_sysfs_ops = {
         .store = module_attr_store,
 };
 
+static int uevent_filter(struct kset *kset, struct kobject *kobj)
+{
+        struct kobj_type *ktype = get_ktype(kobj);
+
+        if (ktype == &module_ktype)
+                return 1;
+        return 0;
+}
+
+static struct kset_uevent_ops module_uevent_ops = {
+        .filter = uevent_filter,
+};
+
 #else
 static struct sysfs_ops module_sysfs_ops = {
         .show = NULL,
@@ -685,7 +697,7 @@ static struct kobj_type module_ktype = {
         .sysfs_ops =    &module_sysfs_ops,
 };
 
-decl_subsys(module, &module_ktype, NULL);
+decl_subsys(module, &module_ktype, &module_uevent_ops);
 
 /*
  * param_sysfs_init - wrapper for built-in params support
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index ed296225dcd4..95f6657fff73 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -131,3 +131,29 @@ config SUSPEND_SMP
         bool
         depends on HOTPLUG_CPU && X86 && PM
         default y
+
+config APM_EMULATION
+        tristate "Advanced Power Management Emulation"
+        depends on PM && SYS_SUPPORTS_APM_EMULATION
+        help
+          APM is a BIOS specification for saving power using several different
+          techniques. This is mostly useful for battery powered laptops with
+          APM compliant BIOSes. If you say Y here, the system time will be
+          reset after a RESUME operation, the /proc/apm device will provide
+          battery status information, and user-space programs will receive
+          notification of APM "events" (e.g. battery status change).
+
+          In order to use APM, you will need supporting software. For location
+          and more information, read <file:Documentation/pm.txt> and the
+          Battery Powered Linux mini-HOWTO, available from
+          <http://www.tldp.org/docs.html#howto>.
+
+          This driver does not spin down disk drives (see the hdparm(8)
+          manpage ("man 8 hdparm") for that), and it doesn't turn off
+          VESA-compliant "green" monitors.
+
+          Generally, if you don't have a battery in your machine, there isn't
+          much point in using this driver and you should say N. If you get
+          random kernel OOPSes or reboots that don't seem to be related to
+          anything, try disabling/enabling this option (or disabling/enabling
+          APM in your BIOS).
diff --git a/kernel/resource.c b/kernel/resource.c
index 7b9a497419d9..2a3f88636580 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -17,6 +17,7 @@
 #include <linux/fs.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/device.h>
 #include <asm/io.h>
 
 
@@ -618,6 +619,67 @@ void __release_region(struct resource *parent, resource_size_t start,
 EXPORT_SYMBOL(__release_region);
 
 /*
+ * Managed region resource
+ */
+struct region_devres {
+        struct resource *parent;
+        resource_size_t start;
+        resource_size_t n;
+};
+
+static void devm_region_release(struct device *dev, void *res)
+{
+        struct region_devres *this = res;
+
+        __release_region(this->parent, this->start, this->n);
+}
+
+static int devm_region_match(struct device *dev, void *res, void *match_data)
+{
+        struct region_devres *this = res, *match = match_data;
+
+        return this->parent == match->parent &&
+                this->start == match->start && this->n == match->n;
+}
+
+struct resource * __devm_request_region(struct device *dev,
+                                struct resource *parent, resource_size_t start,
+                                resource_size_t n, const char *name)
+{
+        struct region_devres *dr = NULL;
+        struct resource *res;
+
+        dr = devres_alloc(devm_region_release, sizeof(struct region_devres),
+                          GFP_KERNEL);
+        if (!dr)
+                return NULL;
+
+        dr->parent = parent;
+        dr->start = start;
+        dr->n = n;
+
+        res = __request_region(parent, start, n, name);
+        if (res)
+                devres_add(dev, dr);
+        else
+                devres_free(dr);
+
+        return res;
+}
+EXPORT_SYMBOL(__devm_request_region);
+
+void __devm_release_region(struct device *dev, struct resource *parent,
+                           resource_size_t start, resource_size_t n)
+{
+        struct region_devres match_data = { parent, start, n };
+
+        __release_region(parent, start, n);
+        WARN_ON(devres_destroy(dev, devm_region_release, devm_region_match,
+                               &match_data));
+}
+EXPORT_SYMBOL(__devm_release_region);
+
+/*
  * Called from init/main.c to reserve IO ports.
  */
 #define MAXRESERVE 4