Merge commit 'v2.6.29-rc8' into cpus4096

[safe/jmp/linux-2.6] / arch / x86 / kernel / apm_32.c

diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c
index 8222236..10033fe 100644 (file)
--- a/arch/x86/kernel/apm_32.c
+++ b/arch/x86/kernel/apm_32.c
@@ -160,9 +160,9 @@
  *         Work around byte swap bug in one of the Vaio's BIOS's
  *         (Marc Boucher <marc@mbsi.ca>).
  *         Exposed the disable flag to dmi so that we can handle known
- *         broken APM (Alan Cox <alan@redhat.com>).
+ *         broken APM (Alan Cox <alan@lxorguk.ukuu.org.uk>).
  *   1.14ac: If the BIOS says "I slowed the CPU down" then don't spin
- *         calling it - instead idle. (Alan Cox <alan@redhat.com>)
+ *         calling it - instead idle. (Alan Cox <alan@lxorguk.ukuu.org.uk>)
  *         If an APM idle fails log it and idle sensibly
  *   1.15: Don't queue events to clients who open the device O_WRONLY.
  *         Don't expect replies from clients who open the device O_RDONLY.
@@ -219,7 +219,6 @@
 #include <linux/time.h>
 #include <linux/sched.h>
 #include <linux/pm.h>
-#include <linux/pm_legacy.h>
 #include <linux/capability.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
@@ -234,6 +233,7 @@
 #include <asm/uaccess.h>
 #include <asm/desc.h>
 #include <asm/i8253.h>
+#include <asm/olpc.h>
 #include <asm/paravirt.h>
 #include <asm/reboot.h>
 
@@ -301,7 +301,7 @@ extern int (*console_blank_hook)(int);
  */
 #define APM_ZERO_SEGS
 
-#include "apm.h"
+#include <asm/apm.h>
 
 /*
  * Define to re-initialize the interrupt 0 timer to 100 Hz after a suspend.
@@ -391,11 +391,7 @@ static int power_off;
 #else
 static int power_off = 1;
 #endif
-#ifdef CONFIG_APM_REAL_MODE_POWER_OFF
-static int realmode_power_off = 1;
-#else
 static int realmode_power_off;
-#endif
 #ifdef CONFIG_APM_ALLOW_INTS
 static int allow_ints = 1;
 #else
@@ -1150,7 +1146,7 @@ static void queue_event(apm_event_t event, struct apm_user *sender)
                                as->event_tail = 0;
                }
                as->events[as->event_head] = event;
-               if ((!as->suser) || (!as->writer))
+               if (!as->suser || !as->writer)
                        continue;
                switch (event) {
                case APM_SYS_SUSPEND:
@@ -1196,6 +1192,7 @@ static int suspend(int vetoable)
        device_suspend(PMSG_SUSPEND);
        local_irq_disable();
        device_power_down(PMSG_SUSPEND);
+       sysdev_suspend(PMSG_SUSPEND);
 
        local_irq_enable();
 
@@ -1212,9 +1209,10 @@ static int suspend(int vetoable)
        if (err != APM_SUCCESS)
                apm_error("suspend", err);
        err = (err == APM_SUCCESS) ? 0 : -EIO;
-       device_power_up();
+       sysdev_resume();
+       device_power_up(PMSG_RESUME);
        local_irq_enable();
-       device_resume();
+       device_resume(PMSG_RESUME);
        queue_event(APM_NORMAL_RESUME, NULL);
        spin_lock(&user_list_lock);
        for (as = user_list; as != NULL; as = as->next) {
@@ -1232,6 +1230,7 @@ static void standby(void)
 
        local_irq_disable();
        device_power_down(PMSG_SUSPEND);
+       sysdev_suspend(PMSG_SUSPEND);
        local_irq_enable();
 
        err = set_system_power_state(APM_STATE_STANDBY);
@@ -1239,7 +1238,8 @@ static void standby(void)
                apm_error("standby", err);
 
        local_irq_disable();
-       device_power_up();
+       sysdev_resume();
+       device_power_up(PMSG_RESUME);
        local_irq_enable();
 }
 
@@ -1325,7 +1325,7 @@ static void check_events(void)
                        ignore_bounce = 1;
                        if ((event != APM_NORMAL_RESUME)
                            || (ignore_normal_resume == 0)) {
-                               device_resume();
+                               device_resume(PMSG_RESUME);
                                queue_event(event, NULL);
                        }
                        ignore_normal_resume = 0;
@@ -1397,7 +1397,7 @@ static void apm_mainloop(void)
 
 static int check_apm_user(struct apm_user *as, const char *func)
 {
-       if ((as == NULL) || (as->magic != APM_BIOS_MAGIC)) {
+       if (as == NULL || as->magic != APM_BIOS_MAGIC) {
                printk(KERN_ERR "apm: %s passed bad filp\n", func);
                return 1;
        }
@@ -1460,18 +1460,19 @@ static unsigned int do_poll(struct file *fp, poll_table *wait)
        return 0;
 }
 
-static int do_ioctl(struct inode *inode, struct file *filp,
-                   u_int cmd, u_long arg)
+static long do_ioctl(struct file *filp, u_int cmd, u_long arg)
 {
        struct apm_user *as;
+       int ret;
 
        as = filp->private_data;
        if (check_apm_user(as, "ioctl"))
                return -EIO;
-       if ((!as->suser) || (!as->writer))
+       if (!as->suser || !as->writer)
                return -EPERM;
        switch (cmd) {
        case APM_IOC_STANDBY:
+               lock_kernel();
                if (as->standbys_read > 0) {
                        as->standbys_read--;
                        as->standbys_pending--;
@@ -1480,8 +1481,10 @@ static int do_ioctl(struct inode *inode, struct file *filp,
                        queue_event(APM_USER_STANDBY, as);
                if (standbys_pending <= 0)
                        standby();
+               unlock_kernel();
                break;
        case APM_IOC_SUSPEND:
+               lock_kernel();
                if (as->suspends_read > 0) {
                        as->suspends_read--;
                        as->suspends_pending--;
@@ -1489,16 +1492,17 @@ static int do_ioctl(struct inode *inode, struct file *filp,
                } else
                        queue_event(APM_USER_SUSPEND, as);
                if (suspends_pending <= 0) {
-                       return suspend(1);
+                       ret = suspend(1);
                } else {
                        as->suspend_wait = 1;
                        wait_event_interruptible(apm_suspend_waitqueue,
                                        as->suspend_wait == 0);
-                       return as->suspend_result;
+                       ret = as->suspend_result;
                }
-               break;
+               unlock_kernel();
+               return ret;
        default:
-               return -EINVAL;
+               return -ENOTTY;
        }
        return 0;
 }
@@ -1864,7 +1868,7 @@ static const struct file_operations apm_bios_fops = {
        .owner          = THIS_MODULE,
        .read           = do_read,
        .poll           = do_poll,
-       .ioctl          = do_ioctl,
+       .unlocked_ioctl = do_ioctl,
        .open           = do_open,
        .release        = do_release,
 };
@@ -2213,7 +2217,7 @@ static int __init apm_init(void)
 
        dmi_check_system(apm_dmi_table);
 
-       if (apm_info.bios.version == 0 || paravirt_enabled()) {
+       if (apm_info.bios.version == 0 || paravirt_enabled() || machine_is_olpc()) {
                printk(KERN_INFO "apm: BIOS not found.\n");
                return -ENODEV;
        }