fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / drivers / pnp / pnpbios / core.c

diff --git a/drivers/pnp/pnpbios/core.c b/drivers/pnp/pnpbios/core.c
index 0d1736c..95738db 100644 (file)
--- a/drivers/pnp/pnpbios/core.c
+++ b/drivers/pnp/pnpbios/core.c
@@ -12,7 +12,7 @@
  * Minor reorganizations by David Hinds <dahinds@users.sourceforge.net>
  * Further modifications (C) 2001, 2002 by:
  *   Alan Cox <alan@redhat.com>
- *   Thomas Hood <jdthood@mail.com>
+ *   Thomas Hood
  *   Brian Gerst <bgerst@didntduck.org>
  *
  * Ported to the PnP Layer and several additional improvements (C) 2002
@@ -56,12 +56,12 @@
 #include <linux/mm.h>
 #include <linux/smp.h>
 #include <linux/slab.h>
-#include <linux/kobject_uevent.h>
 #include <linux/completion.h>
 #include <linux/spinlock.h>
 #include <linux/dmi.h>
 #include <linux/delay.h>
 #include <linux/acpi.h>
+#include <linux/freezer.h>
 
 #include <asm/page.h>
 #include <asm/desc.h>
@@ -86,16 +86,6 @@ int pnp_bios_present(void)
 
 struct pnp_dev_node_info node_info;
 
-void *pnpbios_kmalloc(size_t size, int f)
-{
-       void *p = kmalloc( size, f );
-       if ( p == NULL )
-               printk(KERN_ERR "PnPBIOS: kmalloc() failed\n");
-       else
-               memset(p, 0, size);
-       return p;
-}
-
 /*
  *
  * DOCKING FUNCTIONS
@@ -116,21 +106,20 @@ static int pnp_dock_event(int dock, struct pnp_docking_station_info *info)
        char *argv [3], **envp, *buf, *scratch;
        int i = 0, value;
 
-       if (!hotplug_path [0])
-               return -ENOENT;
        if (!current->fs->root) {
                return -EAGAIN;
        }
-       if (!(envp = (char **) pnpbios_kmalloc (20 * sizeof (char *), GFP_KERNEL))) {
+       if (!(envp = kcalloc(20, sizeof (char *), GFP_KERNEL))) {
                return -ENOMEM;
        }
-       if (!(buf = pnpbios_kmalloc (256, GFP_KERNEL))) {
+       if (!(buf = kzalloc(256, GFP_KERNEL))) {
                kfree (envp);
                return -ENOMEM;
        }
 
-       /* only one standardized param to hotplug command: type */
-       argv [0] = hotplug_path;
+       /* FIXME: if there are actual users of this, it should be integrated into
+        * the driver core and use the usual infrastructure like sysfs and uevents */
+       argv [0] = "/sbin/pnpbios";
        argv [1] = "dock";
        argv [2] = NULL;
 
@@ -180,8 +169,12 @@ static int pnp_dock_thread(void * unused)
                 * Poll every 2 seconds
                 */
                msleep_interruptible(2000);
-               if(signal_pending(current))
+
+               if(signal_pending(current)) {
+                       if (try_to_freeze())
+                               continue;
                        break;
+               }
 
                status = pnp_bios_dock_station_info(&now);
 
@@ -227,7 +220,7 @@ static int pnpbios_get_resources(struct pnp_dev * dev, struct pnp_resource_table
        if(!pnpbios_is_dynamic(dev))
                return -EPERM;
 
-       node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+       node = kzalloc(node_info.max_node_size, GFP_KERNEL);
        if (!node)
                return -1;
        if (pnp_bios_get_dev_node(&nodenum, (char )PNPMODE_DYNAMIC, node)) {
@@ -250,7 +243,7 @@ static int pnpbios_set_resources(struct pnp_dev * dev, struct pnp_resource_table
        if (!pnpbios_is_dynamic(dev))
                return -EPERM;
 
-       node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+       node = kzalloc(node_info.max_node_size, GFP_KERNEL);
        if (!node)
                return -1;
        if (pnp_bios_get_dev_node(&nodenum, (char )PNPMODE_DYNAMIC, node)) {
@@ -301,7 +294,7 @@ static int pnpbios_disable_resources(struct pnp_dev *dev)
        if(dev->flags & PNPBIOS_NO_DISABLE || !pnpbios_is_dynamic(dev))
                return -EPERM;
 
-       node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+       node = kzalloc(node_info.max_node_size, GFP_KERNEL);
        if (!node)
                return -ENOMEM;
 
@@ -343,7 +336,7 @@ static int insert_device(struct pnp_dev *dev, struct pnp_bios_node * node)
        }
 
        /* set the initial values for the PnP device */
-       dev_id = pnpbios_kmalloc(sizeof(struct pnp_id), GFP_KERNEL);
+       dev_id = kzalloc(sizeof(struct pnp_id), GFP_KERNEL);
        if (!dev_id)
                return -1;
        pnpid32_to_pnpid(node->eisa_id,id);
@@ -354,7 +347,7 @@ static int insert_device(struct pnp_dev *dev, struct pnp_bios_node * node)
        dev->flags = node->flags;
        if (!(dev->flags & PNPBIOS_NO_CONFIG))
                dev->capabilities |= PNP_CONFIGURABLE;
-       if (!(dev->flags & PNPBIOS_NO_DISABLE))
+       if (!(dev->flags & PNPBIOS_NO_DISABLE) && pnpbios_is_dynamic(dev))
                dev->capabilities |= PNP_DISABLE;
        dev->capabilities |= PNP_READ;
        if (pnpbios_is_dynamic(dev))
@@ -381,7 +374,7 @@ static void __init build_devlist(void)
        struct pnp_bios_node *node;
        struct pnp_dev *dev;
 
-       node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+       node = kzalloc(node_info.max_node_size, GFP_KERNEL);
        if (!node)
                return;
 
@@ -398,7 +391,7 @@ static void __init build_devlist(void)
                                break;
                }
                nodes_got++;
-               dev =  pnpbios_kmalloc(sizeof (struct pnp_dev), GFP_KERNEL);
+               dev =  kzalloc(sizeof (struct pnp_dev), GFP_KERNEL);
                if (!dev)
                        break;
                if(insert_device(dev,node)<0)
@@ -454,7 +447,7 @@ __setup("pnpbios=", pnpbios_setup);
 /* PnP BIOS signature: "$PnP" */
 #define PNP_SIGNATURE   (('$' << 0) + ('P' << 8) + ('n' << 16) + ('P' << 24))
 
-int __init pnpbios_probe_system(void)
+static int __init pnpbios_probe_system(void)
 {
        union pnp_bios_install_struct *check;
        u8 sum;
@@ -508,7 +501,7 @@ static int __init exploding_pnp_bios(struct dmi_system_id *d)
        return 0;
 }
 
-static struct dmi_system_id pnpbios_dmi_table[] = {
+static struct dmi_system_id pnpbios_dmi_table[] __initdata = {
        {       /* PnPBIOS GPF on boot */
                .callback = exploding_pnp_bios,
                .ident = "Higraded P14H",
@@ -530,11 +523,16 @@ static struct dmi_system_id pnpbios_dmi_table[] = {
        { }
 };
 
-int __init pnpbios_init(void)
+static int __init pnpbios_init(void)
 {
        int ret;
 
-       if (pnpbios_disabled || dmi_check_system(pnpbios_dmi_table)) {
+#if defined(CONFIG_PPC_MERGE)
+       if (check_legacy_ioport(PNPBIOS_BASE))
+               return -ENODEV;
+#endif
+       if (pnpbios_disabled || dmi_check_system(pnpbios_dmi_table) ||
+           paravirt_enabled()) {
                printk(KERN_INFO "PnPBIOS: Disabled\n");
                return -ENODEV;
        }
@@ -583,6 +581,10 @@ subsys_initcall(pnpbios_init);
 
 static int __init pnpbios_thread_init(void)
 {
+#if defined(CONFIG_PPC_MERGE)
+       if (check_legacy_ioport(PNPBIOS_BASE))
+               return 0;
+#endif
        if (pnpbios_disabled)
                return 0;
 #ifdef CONFIG_HOTPLUG