| 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: Fri, 19 May 2017 09:44:46 +0200
From: Michał Kępień <kernel@...pniu.pl>
To: Jonathan Woithe <jwoithe@...t42.net>,
Darren Hart <dvhart@...radead.org>,
Andy Shevchenko <andy@...radead.org>
Cc: platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 6/8] platform/x86: fujitsu-laptop: explicitly pass ACPI device to call_fext_func()
Prepare for not using module-wide data in call_fext_func() by explicitly
passing it a pointer to struct acpi_device while still using a
module-wide pointer in each call.
Doing this enables call_fext_func() to fetch the ACPI handle from its
argument, making the acpi_handle field of struct fujitsu_laptop useless,
so remove that field. While we are at it, the dev field of the same
structure is assigned in acpi_fujitsu_laptop_add() but not used for
anything, so remove it as well.
Signed-off-by: Michał Kępień <kernel@...pniu.pl>
---
drivers/platform/x86/fujitsu-laptop.c | 81 ++++++++++++++++++-----------------
1 file changed, 42 insertions(+), 39 deletions(-)
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index 21bd60afea75..b78c97ebfee4 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -143,8 +143,6 @@ static bool disable_brightness_adjust;
/* Device used to access hotkeys and other features on the laptop */
struct fujitsu_laptop {
- acpi_handle acpi_handle;
- struct acpi_device *dev;
struct input_dev *input;
char phys[32];
struct platform_device *pf_device;
@@ -163,7 +161,8 @@ static u32 dbg_level = 0x03;
/* Fujitsu ACPI interface function */
-static int call_fext_func(int func, int op, int feature, int state)
+static int call_fext_func(struct acpi_device *device,
+ int func, int op, int feature, int state)
{
union acpi_object params[4] = {
{ .integer.type = ACPI_TYPE_INTEGER, .integer.value = func },
@@ -175,8 +174,8 @@ static int call_fext_func(int func, int op, int feature, int state)
unsigned long long value;
acpi_status status;
- status = acpi_evaluate_integer(fujitsu_laptop->acpi_handle, "FUNC",
- &arg_list, &value);
+ status = acpi_evaluate_integer(device->handle, "FUNC", &arg_list,
+ &value);
if (ACPI_FAILURE(status)) {
vdbg_printk(FUJLAPTOP_DBG_ERROR, "Failed to evaluate FUNC\n");
return -ENODEV;
@@ -276,9 +275,9 @@ static int bl_update_status(struct backlight_device *b)
struct acpi_device *device = bl_get_data(b);
if (b->props.power == FB_BLANK_POWERDOWN)
- call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
+ call_fext_func(fext, FUNC_BACKLIGHT, 0x1, 0x4, 0x3);
else
- call_fext_func(FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
+ call_fext_func(fext, FUNC_BACKLIGHT, 0x1, 0x4, 0x0);
return set_lcd_level(device, b->props.brightness);
}
@@ -618,22 +617,22 @@ static int logolamp_set(struct led_classdev *cdev,
if (brightness < LED_FULL)
always = FUNC_LED_OFF;
- ret = call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, poweron);
+ ret = call_fext_func(fext, FUNC_LEDS, 0x1, LOGOLAMP_POWERON, poweron);
if (ret < 0)
return ret;
- return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, always);
+ return call_fext_func(fext, FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, always);
}
static enum led_brightness logolamp_get(struct led_classdev *cdev)
{
int ret;
- ret = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
+ ret = call_fext_func(fext, FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0);
if (ret == FUNC_LED_ON)
return LED_FULL;
- ret = call_fext_func(FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
+ ret = call_fext_func(fext, FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0);
if (ret == FUNC_LED_ON)
return LED_HALF;
@@ -650,10 +649,10 @@ static int kblamps_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
if (brightness >= LED_FULL)
- return call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
+ return call_fext_func(fext, FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
FUNC_LED_ON);
else
- return call_fext_func(FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
+ return call_fext_func(fext, FUNC_LEDS, 0x1, KEYBOARD_LAMPS,
FUNC_LED_OFF);
}
@@ -661,7 +660,8 @@ static enum led_brightness kblamps_get(struct led_classdev *cdev)
{
enum led_brightness brightness = LED_OFF;
- if (call_fext_func(FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
+ if (call_fext_func(fext,
+ FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON)
brightness = LED_FULL;
return brightness;
@@ -677,17 +677,18 @@ static int radio_led_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
if (brightness >= LED_FULL)
- return call_fext_func(FUNC_FLAGS, 0x5, RADIO_LED_ON,
+ return call_fext_func(fext, FUNC_FLAGS, 0x5, RADIO_LED_ON,
RADIO_LED_ON);
else
- return call_fext_func(FUNC_FLAGS, 0x5, RADIO_LED_ON, 0x0);
+ return call_fext_func(fext, FUNC_FLAGS, 0x5, RADIO_LED_ON,
+ 0x0);
}
static enum led_brightness radio_led_get(struct led_classdev *cdev)
{
enum led_brightness brightness = LED_OFF;
- if (call_fext_func(FUNC_FLAGS, 0x4, 0x0, 0x0) & RADIO_LED_ON)
+ if (call_fext_func(fext, FUNC_FLAGS, 0x4, 0x0, 0x0) & RADIO_LED_ON)
brightness = LED_FULL;
return brightness;
@@ -705,12 +706,12 @@ static int eco_led_set(struct led_classdev *cdev,
{
int curr;
- curr = call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0);
+ curr = call_fext_func(fext, FUNC_LEDS, 0x2, ECO_LED, 0x0);
if (brightness >= LED_FULL)
- return call_fext_func(FUNC_LEDS, 0x1, ECO_LED,
+ return call_fext_func(fext, FUNC_LEDS, 0x1, ECO_LED,
curr | ECO_LED_ON);
else
- return call_fext_func(FUNC_LEDS, 0x1, ECO_LED,
+ return call_fext_func(fext, FUNC_LEDS, 0x1, ECO_LED,
curr & ~ECO_LED_ON);
}
@@ -718,7 +719,7 @@ static enum led_brightness eco_led_get(struct led_classdev *cdev)
{
enum led_brightness brightness = LED_OFF;
- if (call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0) & ECO_LED_ON)
+ if (call_fext_func(fext, FUNC_LEDS, 0x2, ECO_LED, 0x0) & ECO_LED_ON)
brightness = LED_FULL;
return brightness;
@@ -734,15 +735,17 @@ static int acpi_fujitsu_laptop_leds_register(struct acpi_device *device)
{
int result;
- if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
+ if (call_fext_func(fext,
+ FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) {
result = devm_led_classdev_register(&device->dev,
&logolamp_led);
if (result)
return result;
}
- if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
- (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
+ if ((call_fext_func(fext,
+ FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) &&
+ (call_fext_func(fext, FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
result = devm_led_classdev_register(&device->dev, &kblamps_led);
if (result)
return result;
@@ -754,7 +757,7 @@ static int acpi_fujitsu_laptop_leds_register(struct acpi_device *device)
* to also have an RF LED. Therefore use bit 24 as an indicator
* that an RF LED is present.
*/
- if (call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0) & BIT(24)) {
+ if (call_fext_func(fext, FUNC_BUTTONS, 0x0, 0x0, 0x0) & BIT(24)) {
result = devm_led_classdev_register(&device->dev, &radio_led);
if (result)
return result;
@@ -765,8 +768,9 @@ static int acpi_fujitsu_laptop_leds_register(struct acpi_device *device)
* bit 14 seems to indicate presence of said led as well.
* Confirm by testing the status.
*/
- if ((call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & BIT(14)) &&
- (call_fext_func(FUNC_LEDS, 0x2, ECO_LED, 0x0) != UNSUPPORTED_CMD)) {
+ if ((call_fext_func(fext, FUNC_LEDS, 0x0, 0x0, 0x0) & BIT(14)) &&
+ (call_fext_func(fext,
+ FUNC_LEDS, 0x2, ECO_LED, 0x0) != UNSUPPORTED_CMD)) {
result = devm_led_classdev_register(&device->dev, &eco_led);
if (result)
return result;
@@ -793,7 +797,6 @@ static int acpi_fujitsu_laptop_add(struct acpi_device *device)
fext = device;
fujitsu_laptop = priv;
- fujitsu_laptop->acpi_handle = device->handle;
sprintf(acpi_device_name(device), "%s",
ACPI_FUJITSU_LAPTOP_DEVICE_NAME);
sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
@@ -812,7 +815,7 @@ static int acpi_fujitsu_laptop_add(struct acpi_device *device)
if (error)
goto err_free_fifo;
- error = acpi_bus_update_power(fujitsu_laptop->acpi_handle, &state);
+ error = acpi_bus_update_power(device->handle, &state);
if (error) {
pr_err("Error reading power state\n");
goto err_free_fifo;
@@ -822,8 +825,6 @@ static int acpi_fujitsu_laptop_add(struct acpi_device *device)
acpi_device_name(device), acpi_device_bid(device),
!device->power.state ? "on" : "off");
- fujitsu_laptop->dev = device;
-
if (acpi_has_method(device->handle, METHOD_NAME__INI)) {
vdbg_printk(FUJLAPTOP_DBG_INFO, "Invoking _INI\n");
if (ACPI_FAILURE
@@ -833,13 +834,13 @@ static int acpi_fujitsu_laptop_add(struct acpi_device *device)
}
i = 0;
- while (call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
+ while (call_fext_func(fext, FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0
&& (i++) < MAX_HOTKEY_RINGBUFFER_SIZE)
; /* No action, result is discarded */
vdbg_printk(FUJLAPTOP_DBG_INFO, "Discarded %i ringbuffer entries\n", i);
fujitsu_laptop->flags_supported =
- call_fext_func(FUNC_FLAGS, 0x0, 0x0, 0x0);
+ call_fext_func(fext, FUNC_FLAGS, 0x0, 0x0, 0x0);
/* Make sure our bitmask of supported functions is cleared if the
RFKILL function block is not implemented, like on the S7020. */
@@ -848,15 +849,16 @@ static int acpi_fujitsu_laptop_add(struct acpi_device *device)
if (fujitsu_laptop->flags_supported)
fujitsu_laptop->flags_state =
- call_fext_func(FUNC_FLAGS, 0x4, 0x0, 0x0);
+ call_fext_func(fext, FUNC_FLAGS, 0x4, 0x0, 0x0);
/* Suspect this is a keymap of the application panel, print it */
- pr_info("BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0));
+ pr_info("BTNI: [0x%x]\n", call_fext_func(fext,
+ FUNC_BUTTONS, 0x0, 0x0, 0x0));
/* Sync backlight power status */
if (fujitsu_bl && fujitsu_bl->bl_device &&
acpi_video_get_backlight_type() == acpi_backlight_vendor) {
- if (call_fext_func(FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
+ if (call_fext_func(fext, FUNC_BACKLIGHT, 0x2, 0x4, 0x0) == 3)
fujitsu_bl->bl_device->props.power = FB_BLANK_POWERDOWN;
else
fujitsu_bl->bl_device->props.power = FB_BLANK_UNBLANK;
@@ -942,9 +944,10 @@ static void acpi_fujitsu_laptop_notify(struct acpi_device *device, u32 event)
if (fujitsu_laptop->flags_supported)
fujitsu_laptop->flags_state =
- call_fext_func(FUNC_FLAGS, 0x4, 0x0, 0x0);
+ call_fext_func(fext, FUNC_FLAGS, 0x4, 0x0, 0x0);
- while ((irb = call_fext_func(FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0 &&
+ while ((irb = call_fext_func(fext,
+ FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0 &&
i++ < MAX_HOTKEY_RINGBUFFER_SIZE) {
scancode = irb & 0x4ff;
if (sparse_keymap_entry_from_scancode(input, scancode))
@@ -961,7 +964,7 @@ static void acpi_fujitsu_laptop_notify(struct acpi_device *device, u32 event)
* handled in software; its state is queried using FUNC_FLAGS
*/
if ((fujitsu_laptop->flags_supported & BIT(26)) &&
- (call_fext_func(FUNC_FLAGS, 0x1, 0x0, 0x0) & BIT(26)))
+ (call_fext_func(fext, FUNC_FLAGS, 0x1, 0x0, 0x0) & BIT(26)))
sparse_keymap_report_event(input, BIT(26), 1, true);
}
--
2.13.0
Powered by blists - more mailing lists