[ACPI] Allow simultaneous Fixed Feature and Control Method buttons

delete /proc/acpi/button

http://bugzilla.kernel.org/show_bug.cgi?id=1920

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 1 insertions, 244 deletions

diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index ec4430e3053f..0f45d45f05a0 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -26,9 +26,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
-#include <linux/types.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 
@@ -36,9 +33,6 @@
 #define ACPI_BUTTON_COMPONENT           0x00080000
 #define ACPI_BUTTON_DRIVER_NAME         "ACPI Button Driver"
 #define ACPI_BUTTON_CLASS               "button"
-#define ACPI_BUTTON_FILE_INFO           "info"
-#define ACPI_BUTTON_FILE_STATE          "state"
-#define ACPI_BUTTON_TYPE_UNKNOWN        0x00
 #define ACPI_BUTTON_NOTIFY_STATUS       0x80
 
 #define ACPI_BUTTON_SUBCLASS_POWER      "power"
@@ -70,8 +64,6 @@ MODULE_LICENSE("GPL");
 
 static int acpi_button_add (struct acpi_device *device);
 static int acpi_button_remove (struct acpi_device *device, int type);
-static int acpi_button_info_open_fs(struct inode *inode, struct file *file);
-static int acpi_button_state_open_fs(struct inode *inode, struct file *file);
 
 static struct acpi_driver acpi_button_driver = {
         .name =         ACPI_BUTTON_DRIVER_NAME,
@@ -90,187 +82,6 @@ struct acpi_button {
         unsigned long           pushed;
 };
 
-static struct file_operations acpi_button_info_fops = {
-        .open           = acpi_button_info_open_fs,
-        .read           = seq_read,
-        .llseek         = seq_lseek,
-        .release        = single_release,
-};
-
-static struct file_operations acpi_button_state_fops = {
-        .open           = acpi_button_state_open_fs,
-        .read           = seq_read,
-        .llseek         = seq_lseek,
-        .release        = single_release,
-};
-/* --------------------------------------------------------------------------
-                              FS Interface (/proc)
-   -------------------------------------------------------------------------- */
-
-static struct proc_dir_entry    *acpi_button_dir;
-
-static int acpi_button_info_seq_show(struct seq_file *seq, void *offset)
-{
-        struct acpi_button      *button = (struct acpi_button *) seq->private;
-
-        ACPI_FUNCTION_TRACE("acpi_button_info_seq_show");
-
-        if (!button || !button->device)
-                return_VALUE(0);
-
-        seq_printf(seq, "type:                    %s\n", 
-                acpi_device_name(button->device));
-
-        return_VALUE(0);
-}
-
-static int acpi_button_info_open_fs(struct inode *inode, struct file *file)
-{
-        return single_open(file, acpi_button_info_seq_show, PDE(inode)->data);
-}
-        
-static int acpi_button_state_seq_show(struct seq_file *seq, void *offset)
-{
-        struct acpi_button      *button = (struct acpi_button *) seq->private;
-        acpi_status             status;
-        unsigned long           state;
-
-        ACPI_FUNCTION_TRACE("acpi_button_state_seq_show");
-
-        if (!button || !button->device)
-                return_VALUE(0);
-
-        status = acpi_evaluate_integer(button->handle,"_LID",NULL,&state);
-        if (ACPI_FAILURE(status)) {
-                seq_printf(seq, "state:      unsupported\n");
-        }
-        else{
-                seq_printf(seq, "state:      %s\n", (state ? "open" : "closed")); 
-        }
-
-        return_VALUE(0);
-}
-
-static int acpi_button_state_open_fs(struct inode *inode, struct file *file)
-{
-        return single_open(file, acpi_button_state_seq_show, PDE(inode)->data);
-}
-
-static int
-acpi_button_add_fs (
-        struct acpi_device      *device)
-{
-        struct proc_dir_entry   *entry = NULL;
-        struct acpi_button      *button = NULL;
-
-        ACPI_FUNCTION_TRACE("acpi_button_add_fs");
-
-        if (!device || !acpi_driver_data(device))
-                return_VALUE(-EINVAL);
-
-        button = acpi_driver_data(device);
-
-        switch (button->type) {
-        case ACPI_BUTTON_TYPE_POWER:
-        case ACPI_BUTTON_TYPE_POWERF:
-                        entry = proc_mkdir(ACPI_BUTTON_SUBCLASS_POWER, 
-                                acpi_button_dir);
-                break;
-        case ACPI_BUTTON_TYPE_SLEEP:
-        case ACPI_BUTTON_TYPE_SLEEPF:
-                        entry = proc_mkdir(ACPI_BUTTON_SUBCLASS_SLEEP, 
-                                acpi_button_dir);
-                break;
-        case ACPI_BUTTON_TYPE_LID:
-                        entry = proc_mkdir(ACPI_BUTTON_SUBCLASS_LID, 
-                                acpi_button_dir);
-                break;
-        }
-
-        if (!entry)
-                return_VALUE(-ENODEV);
-        entry->owner = THIS_MODULE;
-
-        acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), entry);
-        if (!acpi_device_dir(device))
-                return_VALUE(-ENODEV);
-        acpi_device_dir(device)->owner = THIS_MODULE;
-
-        /* 'info' [R] */
-        entry = create_proc_entry(ACPI_BUTTON_FILE_INFO,
-                S_IRUGO, acpi_device_dir(device));
-        if (!entry)
-                ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-                        "Unable to create '%s' fs entry\n",
-                        ACPI_BUTTON_FILE_INFO));
-        else {
-                entry->proc_fops = &acpi_button_info_fops;
-                entry->data = acpi_driver_data(device);
-                entry->owner = THIS_MODULE;
-        }
-
-        /* show lid state [R] */
-        if (button->type == ACPI_BUTTON_TYPE_LID) {
-                entry = create_proc_entry(ACPI_BUTTON_FILE_STATE,
-                        S_IRUGO, acpi_device_dir(device));
-                if (!entry)
-                        ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-                                "Unable to create '%s' fs entry\n",
-                                ACPI_BUTTON_FILE_INFO));
-                else {
-                        entry->proc_fops = &acpi_button_state_fops;
-                        entry->data = acpi_driver_data(device);
-                        entry->owner = THIS_MODULE;
-                }
-        }
-
-        return_VALUE(0);
-}
-
-
-static int
-acpi_button_remove_fs (
-        struct acpi_device      *device)
-{
-        struct acpi_button      *button = NULL;
-
-        ACPI_FUNCTION_TRACE("acpi_button_remove_fs");
-
-        button = acpi_driver_data(device);
-        if (acpi_device_dir(device)) {
-                if (button->type == ACPI_BUTTON_TYPE_LID)
-                        remove_proc_entry(ACPI_BUTTON_FILE_STATE,
-                                             acpi_device_dir(device));
-                remove_proc_entry(ACPI_BUTTON_FILE_INFO,
-                                     acpi_device_dir(device));
-
-                remove_proc_entry(acpi_device_bid(device),
-                                     acpi_device_dir(device)->parent);
-
-
-                switch (button->type) {
-                        case ACPI_BUTTON_TYPE_POWER:
-                        case ACPI_BUTTON_TYPE_POWERF:
-                                remove_proc_entry(ACPI_BUTTON_SUBCLASS_POWER, 
-                                        acpi_button_dir);
-                                break;
-                        case ACPI_BUTTON_TYPE_SLEEP:
-                        case ACPI_BUTTON_TYPE_SLEEPF:
-                                remove_proc_entry(ACPI_BUTTON_SUBCLASS_SLEEP, 
-                                        acpi_button_dir);
-                                break;
-                        case ACPI_BUTTON_TYPE_LID:
-                                remove_proc_entry(ACPI_BUTTON_SUBCLASS_LID, 
-                                        acpi_button_dir);
-                                break;
-                }
-                acpi_device_dir(device) = NULL;
-        }
-
-        return_VALUE(0);
-}
-
-
 /* --------------------------------------------------------------------------
                                 Driver Interface
    -------------------------------------------------------------------------- */
@@ -310,8 +121,7 @@ acpi_button_notify_fixed (
         
         ACPI_FUNCTION_TRACE("acpi_button_notify_fixed");
 
-        if (!button)
-                return_ACPI_STATUS(AE_BAD_PARAMETER);
+        BUG_ON(!button);
 
         acpi_button_notify(button->handle, ACPI_BUTTON_NOTIFY_STATUS, button);
 
@@ -327,10 +137,6 @@ acpi_button_add (
         acpi_status             status = AE_OK;
         struct acpi_button      *button = NULL;
 
-        static struct acpi_device *power_button;
-        static struct acpi_device *sleep_button;
-        static struct acpi_device *lid_button;
-
         ACPI_FUNCTION_TRACE("acpi_button_add");
 
         if (!device)
@@ -391,42 +197,6 @@ acpi_button_add (
                 goto end;
         }
 
-        /*
-         * Ensure only one button of each type is used.
-         */
-        switch (button->type) {
-        case ACPI_BUTTON_TYPE_POWER:
-        case ACPI_BUTTON_TYPE_POWERF:
-                if (!power_button)
-                        power_button = device;
-                else {
-                        kfree(button);
-                        return_VALUE(-ENODEV);
-                }
-                break;
-        case ACPI_BUTTON_TYPE_SLEEP:
-        case ACPI_BUTTON_TYPE_SLEEPF:
-                if (!sleep_button)
-                        sleep_button = device;
-                else {
-                        kfree(button);
-                        return_VALUE(-ENODEV);
-                }
-                break;
-        case ACPI_BUTTON_TYPE_LID:
-                if (!lid_button)
-                        lid_button = device;
-                else {
-                        kfree(button);
-                        return_VALUE(-ENODEV);
-                }
-                break;
-        }
-
-        result = acpi_button_add_fs(device);
-        if (result)
-                goto end;
-
         switch (button->type) {
         case ACPI_BUTTON_TYPE_POWERF:
                 status = acpi_install_fixed_event_handler (
@@ -470,7 +240,6 @@ acpi_button_add (
 
 end:
         if (result) {
-                acpi_button_remove_fs(device);
                 kfree(button);
         }
 
@@ -511,8 +280,6 @@ acpi_button_remove (struct acpi_device *device, int type)
                 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
                         "Error removing notify handler\n"));
 
-        acpi_button_remove_fs(device);  
-
         kfree(button);
 
         return_VALUE(0);
@@ -526,21 +293,14 @@ acpi_button_init (void)
 
         ACPI_FUNCTION_TRACE("acpi_button_init");
 
-        acpi_button_dir = proc_mkdir(ACPI_BUTTON_CLASS, acpi_root_dir);
-        if (!acpi_button_dir)
-                return_VALUE(-ENODEV);
-        acpi_button_dir->owner = THIS_MODULE;
-
         result = acpi_bus_register_driver(&acpi_button_driver);
         if (result < 0) {
-                remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
                 return_VALUE(-ENODEV);
         }
 
         return_VALUE(0);
 }
 
-
 static void __exit
 acpi_button_exit (void)
 {
@@ -548,11 +308,8 @@ acpi_button_exit (void)
 
         acpi_bus_unregister_driver(&acpi_button_driver);
 
-        remove_proc_entry(ACPI_BUTTON_CLASS, acpi_root_dir);
-
         return_VOID;
 }
 
-
 module_init(acpi_button_init);
 module_exit(acpi_button_exit);