| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 3 Jul 2013 14:48:39 +0200
From: Thomas Renninger <trenn@...e.de>
To: unlisted-recipients:; (no To-header on input)
Cc: linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
platform-driver-x86@...r.kernel.org,
ibm-acpi-devel@...ts.sourceforge.net, trenn@...e.de,
Henrique de Moraes Holschuh <hmh@....eng.br>
Subject: [PATCH 3/3] platform thinkpad: Remove deprecated hotkey_report_mode parameter
It is somewhat strange that the default value to support the depracated
interface is set (1).
Anyway this exists for years. The previous patch already removed the
functionality to still export specific events through /proc. Now this param
is useless and should vanish as well.
CC: Henrique de Moraes Holschuh <hmh@....eng.br>
Signed-off-by: Thomas Renninger <trenn@...e.de>
---
Documentation/laptops/thinkpad-acpi.txt | 73 +++----------------------------
drivers/platform/x86/thinkpad_acpi.c | 29 ------------
2 files changed, 6 insertions(+), 96 deletions(-)
diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt
index cf7bc6c..86c5236 100644
--- a/Documentation/laptops/thinkpad-acpi.txt
+++ b/Documentation/laptops/thinkpad-acpi.txt
@@ -329,20 +329,6 @@ sysfs notes:
This attribute has poll()/select() support.
- hotkey_report_mode:
- Returns the state of the procfs ACPI event report mode
- filter for hot keys. If it is set to 1 (the default),
- all hot key presses are reported both through the input
- layer and also as ACPI events through procfs (but not
- through netlink). If it is set to 2, hot key presses
- are reported only through the input layer.
-
- This attribute is read-only in kernels 2.6.23 or later,
- and read-write on earlier kernels.
-
- May return -EPERM (write access locked out by module
- parameter) or -EACCES (read-only).
-
wakeup_reason:
Set to 1 if the system is waking up because the user
requested a bay ejection. Set to 2 if the system is
@@ -518,24 +504,21 @@ SW_TABLET_MODE Tablet ThinkPads HKEY events 0x5009 and 0x500A
Non hotkey ACPI HKEY event map:
-------------------------------
-Events that are not propagated by the driver, except for legacy
-compatibility purposes when hotkey_report_mode is set to 1:
-
-0x5001 Lid closed
-0x5002 Lid opened
-0x5009 Tablet swivel: switched to tablet mode
-0x500A Tablet swivel: switched to normal mode
-0x7000 Radio Switch may have changed state
-
Events that are never propagated by the driver:
0x2304 System is waking up from suspend to undock
0x2305 System is waking up from suspend to eject bay
0x2404 System is waking up from hibernation to undock
0x2405 System is waking up from hibernation to eject bay
+0x5001 Lid closed
+0x5002 Lid opened
+0x5009 Tablet swivel: switched to tablet mode
+0x500A Tablet swivel: switched to normal mode
0x5010 Brightness level changed/control event
0x6000 KEYBOARD: Numlock key pressed
0x6005 KEYBOARD: Fn key pressed (TO BE VERIFIED)
+0x7000 Radio Switch may have changed state
+
Events that are propagated by the driver to userspace:
@@ -574,50 +557,6 @@ operating system is to force either an immediate suspend or hibernate
cycle, or a system shutdown. Obviously, something is very wrong if this
happens.
-Compatibility notes:
-
-ibm-acpi and thinkpad-acpi 0.15 (mainline kernels before 2.6.23) never
-supported the input layer, and sent events over the procfs ACPI event
-interface.
-
-To avoid sending duplicate events over the input layer and the ACPI
-event interface, thinkpad-acpi 0.16 implements a module parameter
-(hotkey_report_mode), and also a sysfs device attribute with the same
-name.
-
-Make no mistake here: userspace is expected to switch to using the input
-layer interface of thinkpad-acpi, together with the ACPI netlink event
-interface in kernels 2.6.23 and later, or with the ACPI procfs event
-interface in kernels 2.6.22 and earlier.
-
-If no hotkey_report_mode module parameter is specified (or it is set to
-zero), the driver defaults to mode 1 (see below), and on kernels 2.6.22
-and earlier, also allows one to change the hotkey_report_mode through
-sysfs. In kernels 2.6.23 and later, where the netlink ACPI event
-interface is available, hotkey_report_mode cannot be changed through
-sysfs (it is read-only).
-
-If the hotkey_report_mode module parameter is set to 1 or 2, it cannot
-be changed later through sysfs (any writes will return -EPERM to signal
-that hotkey_report_mode was locked. On 2.6.23 and later, where
-hotkey_report_mode cannot be changed at all, writes will return -EACCES).
-
-hotkey_report_mode set to 1 makes the driver export through the procfs
-ACPI event interface all hot key presses (which are *also* sent to the
-input layer). This is a legacy compatibility behaviour, and it is also
-the default mode of operation for the driver.
-
-hotkey_report_mode set to 2 makes the driver filter out the hot key
-presses from the procfs ACPI event interface, so these events will only
-be sent through the input layer. Userspace that has been updated to use
-the thinkpad-acpi input layer interface should set hotkey_report_mode to
-2.
-
-Hot key press events are never sent to the ACPI netlink event interface.
-Really up-to-date userspace under kernel 2.6.23 and later is to use the
-netlink interface and the input layer interface, and don't bother at all
-with hotkey_report_mode.
-
Brightness hotkey notes:
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index e946c0d..be67e5e 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -2022,8 +2022,6 @@ static u32 hotkey_driver_mask; /* events needed by the driver */
static u32 hotkey_user_mask; /* events visible to userspace */
static u32 hotkey_acpi_mask; /* events enabled in firmware */
-static unsigned int hotkey_report_mode;
-
static u16 *hotkey_keycode_map;
static struct attribute_set *hotkey_dev_attributes;
@@ -2878,18 +2876,6 @@ static void hotkey_tablet_mode_notify_change(void)
"hotkey_tablet_mode");
}
-/* sysfs hotkey report_mode -------------------------------------------- */
-static ssize_t hotkey_report_mode_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%d\n",
- (hotkey_report_mode != 0) ? hotkey_report_mode : 1);
-}
-
-static struct device_attribute dev_attr_hotkey_report_mode =
- __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL);
-
/* sysfs wakeup reason (pollable) -------------------------------------- */
static ssize_t hotkey_wakeup_reason_show(struct device *dev,
struct device_attribute *attr,
@@ -2931,7 +2917,6 @@ static struct attribute *hotkey_attributes[] __initdata = {
&dev_attr_hotkey_enable.attr,
&dev_attr_hotkey_bios_enabled.attr,
&dev_attr_hotkey_bios_mask.attr,
- &dev_attr_hotkey_report_mode.attr,
&dev_attr_hotkey_wakeup_reason.attr,
&dev_attr_hotkey_wakeup_hotunplug_complete.attr,
&dev_attr_hotkey_mask.attr,
@@ -3435,11 +3420,6 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
"initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n",
hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask);
- dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY,
- "legacy ibm/hotkey event reporting over procfs %s\n",
- (hotkey_report_mode < 2) ?
- "enabled" : "disabled");
-
tpacpi_inputdev->open = &hotkey_inputdev_open;
tpacpi_inputdev->close = &hotkey_inputdev_close;
@@ -8829,11 +8809,6 @@ module_param(brightness_enable, uint, 0444);
MODULE_PARM_DESC(brightness_enable,
"Enables backlight control when 1, disables when 0");
-module_param(hotkey_report_mode, uint, 0444);
-MODULE_PARM_DESC(hotkey_report_mode,
- "used for backwards compatibility with userspace, "
- "see documentation");
-
#ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT
module_param_named(volume_mode, volume_mode, uint, 0444);
MODULE_PARM_DESC(volume_mode,
@@ -8964,10 +8939,6 @@ static int __init thinkpad_acpi_module_init(void)
tpacpi_lifecycle = TPACPI_LIFE_INIT;
- /* Parameter checking */
- if (hotkey_report_mode > 2)
- return -EINVAL;
-
/* Driver-level probe */
ret = get_thinkpad_model_data(&thinkpad_id);
--
1.7.6.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists