The patch titled
hdaps: switch to using input-polldev
has been added to the -mm tree. Its filename is
hdaps-switch-to-using-input-polldev.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: hdaps: switch to using input-polldev
From: Dmitry Torokhov <dtor@xxxxxxxxxxxxx>
Switch to using input-polldev skeleton instead of implementing polling loop
by itself. This also fixes problem with trylock on a mutex in atomic
context.
(akpm: needs runtime testing by the cc'ed, please)
Signed-off-by: Dmitry Torokhov <dtor@xxxxxxx>
Cc: Jean Delvare <khali@xxxxxxxxxxxx>
Cc: Stelian Pop <stelian@xxxxxxxxxx>
Cc: Robert Love <rlove@xxxxxxxxx>
Cc: Nicolas Boichat <nicolas@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/hwmon/Kconfig | 1
drivers/hwmon/hdaps.c | 55 +++++++++++++++++-----------------------
2 files changed, 25 insertions(+), 31 deletions(-)
diff -puN drivers/hwmon/Kconfig~hdaps-switch-to-using-input-polldev drivers/hwmon/Kconfig
--- a/drivers/hwmon/Kconfig~hdaps-switch-to-using-input-polldev
+++ a/drivers/hwmon/Kconfig
@@ -612,6 +612,7 @@ config SENSORS_W83627EHF
config SENSORS_HDAPS
tristate "IBM Hard Drive Active Protection System (hdaps)"
depends on INPUT && X86
+ select INPUT_POLLDEV
default n
help
This driver provides support for the IBM Hard Drive Active Protection
diff -puN drivers/hwmon/hdaps.c~hdaps-switch-to-using-input-polldev drivers/hwmon/hdaps.c
--- a/drivers/hwmon/hdaps.c~hdaps-switch-to-using-input-polldev
+++ a/drivers/hwmon/hdaps.c
@@ -28,7 +28,7 @@
#include <linux/delay.h>
#include <linux/platform_device.h>
-#include <linux/input.h>
+#include <linux/input-polldev.h>
#include <linux/kernel.h>
#include <linux/mutex.h>
#include <linux/module.h>
@@ -61,13 +61,12 @@
#define INIT_TIMEOUT_MSECS 4000 /* wait up to 4s for device init ... */
#define INIT_WAIT_MSECS 200 /* ... in 200ms increments */
-#define HDAPS_POLL_PERIOD (HZ/20) /* poll for input every 1/20s */
+#define HDAPS_POLL_INTERVAL 50 /* poll for input every 1/20s (50 ms)*/
#define HDAPS_INPUT_FUZZ 4 /* input event threshold */
#define HDAPS_INPUT_FLAT 4
-static struct timer_list hdaps_timer;
static struct platform_device *pdev;
-static struct input_dev *hdaps_idev;
+static struct input_polled_dev *hdaps_idev;
static unsigned int hdaps_invert;
static u8 km_activity;
static int rest_x;
@@ -323,24 +322,19 @@ static void hdaps_calibrate(void)
__hdaps_read_pair(HDAPS_PORT_XPOS, HDAPS_PORT_YPOS, &rest_x, &rest_y);
}
-static void hdaps_mousedev_poll(unsigned long unused)
+static void hdaps_mousedev_poll(struct input_polled_dev *dev)
{
+ struct input_dev *input_dev = dev->input;
int x, y;
- /* Cannot sleep. Try nonblockingly. If we fail, try again later. */
- if (mutex_trylock(&hdaps_mtx)) {
- mod_timer(&hdaps_timer,jiffies + HDAPS_POLL_PERIOD);
- return;
- }
+ mutex_lock(&hdaps_mtx);
if (__hdaps_read_pair(HDAPS_PORT_XPOS, HDAPS_PORT_YPOS, &x, &y))
goto out;
- input_report_abs(hdaps_idev, ABS_X, x - rest_x);
- input_report_abs(hdaps_idev, ABS_Y, y - rest_y);
- input_sync(hdaps_idev);
-
- mod_timer(&hdaps_timer, jiffies + HDAPS_POLL_PERIOD);
+ input_report_abs(input_dev, ABS_X, x - rest_x);
+ input_report_abs(input_dev, ABS_Y, y - rest_y);
+ input_sync(input_dev);
out:
mutex_unlock(&hdaps_mtx);
@@ -536,6 +530,7 @@ static struct dmi_system_id __initdata h
static int __init hdaps_init(void)
{
+ struct input_dev *idev;
int ret;
if (!dmi_check_system(hdaps_whitelist)) {
@@ -563,39 +558,37 @@ static int __init hdaps_init(void)
if (ret)
goto out_device;
- hdaps_idev = input_allocate_device();
+ hdaps_idev = input_allocate_polled_device();
if (!hdaps_idev) {
ret = -ENOMEM;
goto out_group;
}
+ hdaps_idev->poll = hdaps_mousedev_poll;
+ hdaps_idev->poll_interval = HDAPS_POLL_INTERVAL;
+
/* initial calibrate for the input device */
hdaps_calibrate();
/* initialize the input class */
- hdaps_idev->name = "hdaps";
- hdaps_idev->dev.parent = &pdev->dev;
- hdaps_idev->evbit[0] = BIT(EV_ABS);
- input_set_abs_params(hdaps_idev, ABS_X,
+ idev = hdaps_idev->input;
+ idev->name = "hdaps";
+ idev->dev.parent = &pdev->dev;
+ idev->evbit[0] = BIT(EV_ABS);
+ input_set_abs_params(idev, ABS_X,
-256, 256, HDAPS_INPUT_FUZZ, HDAPS_INPUT_FLAT);
- input_set_abs_params(hdaps_idev, ABS_Y,
+ input_set_abs_params(idev, ABS_Y,
-256, 256, HDAPS_INPUT_FUZZ, HDAPS_INPUT_FLAT);
- ret = input_register_device(hdaps_idev);
+ ret = input_register_polled_device(hdaps_idev);
if (ret)
goto out_idev;
- /* start up our timer for the input device */
- init_timer(&hdaps_timer);
- hdaps_timer.function = hdaps_mousedev_poll;
- hdaps_timer.expires = jiffies + HDAPS_POLL_PERIOD;
- add_timer(&hdaps_timer);
-
printk(KERN_INFO "hdaps: driver successfully loaded.\n");
return 0;
out_idev:
- input_free_device(hdaps_idev);
+ input_free_polled_device(hdaps_idev);
out_group:
sysfs_remove_group(&pdev->dev.kobj, &hdaps_attribute_group);
out_device:
@@ -611,8 +604,8 @@ out:
static void __exit hdaps_exit(void)
{
- del_timer_sync(&hdaps_timer);
- input_unregister_device(hdaps_idev);
+ input_unregister_polled_device(hdaps_idev);
+ input_free_polled_device(hdaps_idev);
sysfs_remove_group(&pdev->dev.kobj, &hdaps_attribute_group);
platform_device_unregister(pdev);
platform_driver_unregister(&hdaps_driver);
_
Patches currently in -mm which might be from dtor@xxxxxxxxxxxxx are
git-dvb.patch
hdaps-switch-to-using-input-polldev.patch
git-input.patch
input-reduce-raciness-when-input-handlers-disconnect.patch
input-convert-from-class-devices-to-standard-devices.patch
ibmasm-whitespace-cleanup.patch
ibmasm-dont-use-extern-in-function-declarations.patch
ibmasm-miscellaneous-fixes.patch
ibmasm-must-depend-on-config_input.patch
-
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