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Commit 864ee6cb authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: fix typo in keycode validation supporting large scancodes
  Input: aiptek - tighten up permissions on sysfs attributes
  Input: sysrq - pass along lone Alt + SysRq
parents 973d168d de391d12

drivers/input/input.c

+1 −1
Original line number Diff line number Diff line
@@ -752,7 +752,7 @@ static int input_default_setkeycode(struct input_dev *dev, 
	if (index >= dev->keycodemax)

		return -EINVAL;



	if (dev->keycodesize < sizeof(dev->keycode) &&

	if (dev->keycodesize < sizeof(ke->keycode) &&

			(ke->keycode >> (dev->keycodesize * 8)))

		return -EINVAL;

drivers/input/tablet/aiptek.c

+14 −14
Original line number Diff line number Diff line
@@ -1097,7 +1097,7 @@ store_tabletPointerMode(struct device *dev, struct device_attribute *attr, const 
}



static DEVICE_ATTR(pointer_mode,

		   S_IRUGO | S_IWUGO,

		   S_IRUGO | S_IWUSR,

		   show_tabletPointerMode, store_tabletPointerMode);



/***********************************************************************
@@ -1134,7 +1134,7 @@ store_tabletCoordinateMode(struct device *dev, struct device_attribute *attr, co 
}



static DEVICE_ATTR(coordinate_mode,

		   S_IRUGO | S_IWUGO,

		   S_IRUGO | S_IWUSR,

		   show_tabletCoordinateMode, store_tabletCoordinateMode);



/***********************************************************************
@@ -1176,7 +1176,7 @@ store_tabletToolMode(struct device *dev, struct device_attribute *attr, const ch 
}



static DEVICE_ATTR(tool_mode,

		   S_IRUGO | S_IWUGO,

		   S_IRUGO | S_IWUSR,

		   show_tabletToolMode, store_tabletToolMode);



/***********************************************************************
@@ -1219,7 +1219,7 @@ store_tabletXtilt(struct device *dev, struct device_attribute *attr, const char 
}



static DEVICE_ATTR(xtilt,

		   S_IRUGO | S_IWUGO, show_tabletXtilt, store_tabletXtilt);

		   S_IRUGO | S_IWUSR, show_tabletXtilt, store_tabletXtilt);



/***********************************************************************

 * support routines for the 'ytilt' file. Note that this file
@@ -1261,7 +1261,7 @@ store_tabletYtilt(struct device *dev, struct device_attribute *attr, const char 
}



static DEVICE_ATTR(ytilt,

		   S_IRUGO | S_IWUGO, show_tabletYtilt, store_tabletYtilt);

		   S_IRUGO | S_IWUSR, show_tabletYtilt, store_tabletYtilt);



/***********************************************************************

 * support routines for the 'jitter' file. Note that this file
@@ -1288,7 +1288,7 @@ store_tabletJitterDelay(struct device *dev, struct device_attribute *attr, const 
}



static DEVICE_ATTR(jitter,

		   S_IRUGO | S_IWUGO,

		   S_IRUGO | S_IWUSR,

		   show_tabletJitterDelay, store_tabletJitterDelay);



/***********************************************************************
@@ -1317,7 +1317,7 @@ store_tabletProgrammableDelay(struct device *dev, struct device_attribute *attr, 
}



static DEVICE_ATTR(delay,

		   S_IRUGO | S_IWUGO,

		   S_IRUGO | S_IWUSR,

		   show_tabletProgrammableDelay, store_tabletProgrammableDelay);



/***********************************************************************
@@ -1406,7 +1406,7 @@ store_tabletStylusUpper(struct device *dev, struct device_attribute *attr, const 
}



static DEVICE_ATTR(stylus_upper,

		   S_IRUGO | S_IWUGO,

		   S_IRUGO | S_IWUSR,

		   show_tabletStylusUpper, store_tabletStylusUpper);



/***********************************************************************
@@ -1437,7 +1437,7 @@ store_tabletStylusLower(struct device *dev, struct device_attribute *attr, const 
}



static DEVICE_ATTR(stylus_lower,

		   S_IRUGO | S_IWUGO,

		   S_IRUGO | S_IWUSR,

		   show_tabletStylusLower, store_tabletStylusLower);



/***********************************************************************
@@ -1475,7 +1475,7 @@ store_tabletMouseLeft(struct device *dev, struct device_attribute *attr, const c 
}



static DEVICE_ATTR(mouse_left,

		   S_IRUGO | S_IWUGO,

		   S_IRUGO | S_IWUSR,

		   show_tabletMouseLeft, store_tabletMouseLeft);



/***********************************************************************
@@ -1505,7 +1505,7 @@ store_tabletMouseMiddle(struct device *dev, struct device_attribute *attr, const 
}



static DEVICE_ATTR(mouse_middle,

		   S_IRUGO | S_IWUGO,

		   S_IRUGO | S_IWUSR,

		   show_tabletMouseMiddle, store_tabletMouseMiddle);



/***********************************************************************
@@ -1535,7 +1535,7 @@ store_tabletMouseRight(struct device *dev, struct device_attribute *attr, const 
}



static DEVICE_ATTR(mouse_right,

		   S_IRUGO | S_IWUGO,

		   S_IRUGO | S_IWUSR,

		   show_tabletMouseRight, store_tabletMouseRight);



/***********************************************************************
@@ -1567,7 +1567,7 @@ store_tabletWheel(struct device *dev, struct device_attribute *attr, const char 
}



static DEVICE_ATTR(wheel,

		   S_IRUGO | S_IWUGO, show_tabletWheel, store_tabletWheel);

		   S_IRUGO | S_IWUSR, show_tabletWheel, store_tabletWheel);



/***********************************************************************

 * support routines for the 'execute' file. Note that this file
@@ -1600,7 +1600,7 @@ store_tabletExecute(struct device *dev, struct device_attribute *attr, const cha 
}



static DEVICE_ATTR(execute,

		   S_IRUGO | S_IWUGO, show_tabletExecute, store_tabletExecute);

		   S_IRUGO | S_IWUSR, show_tabletExecute, store_tabletExecute);



/***********************************************************************

 * support routines for the 'odm_code' file. Note that this file

drivers/tty/sysrq.c

+124 −45
Original line number Diff line number Diff line
@@ -554,7 +554,7 @@ EXPORT_SYMBOL(handle_sysrq); 
#ifdef CONFIG_INPUT



/* Simple translation table for the SysRq keys */

static const unsigned char sysrq_xlate[KEY_MAX + 1] =

static const unsigned char sysrq_xlate[KEY_CNT] =

        "\000\0331234567890-=\177\t"                    /* 0x00 - 0x0f */

        "qwertyuiop[]\r\000as"                          /* 0x10 - 0x1f */

        "dfghjkl;'`\000\\zxcv"                          /* 0x20 - 0x2f */
@@ -563,52 +563,128 @@ static const unsigned char sysrq_xlate[KEY_MAX + 1] = 
        "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */

        "\r\000/";                                      /* 0x60 - 0x6f */



static bool sysrq_down;

static int sysrq_alt_use;

static int sysrq_alt;

static DEFINE_SPINLOCK(sysrq_event_lock);

struct sysrq_state {

	struct input_handle handle;

	struct work_struct reinject_work;

	unsigned long key_down[BITS_TO_LONGS(KEY_CNT)];

	unsigned int alt;

	unsigned int alt_use;

	bool active;

	bool need_reinject;

};



static bool sysrq_filter(struct input_handle *handle, unsigned int type,

		         unsigned int code, int value)

static void sysrq_reinject_alt_sysrq(struct work_struct *work)

{

	struct sysrq_state *sysrq =

			container_of(work, struct sysrq_state, reinject_work);

	struct input_handle *handle = &sysrq->handle;

	unsigned int alt_code = sysrq->alt_use;



	if (sysrq->need_reinject) {

		/* Simulate press and release of Alt + SysRq */

		input_inject_event(handle, EV_KEY, alt_code, 1);

		input_inject_event(handle, EV_KEY, KEY_SYSRQ, 1);

		input_inject_event(handle, EV_SYN, SYN_REPORT, 1);



		input_inject_event(handle, EV_KEY, KEY_SYSRQ, 0);

		input_inject_event(handle, EV_KEY, alt_code, 0);

		input_inject_event(handle, EV_SYN, SYN_REPORT, 1);

	}

}



static bool sysrq_filter(struct input_handle *handle,

			 unsigned int type, unsigned int code, int value)

{

	struct sysrq_state *sysrq = handle->private;

	bool was_active = sysrq->active;

	bool suppress;



	/* We are called with interrupts disabled, just take the lock */

	spin_lock(&sysrq_event_lock);

	switch (type) {



	if (type != EV_KEY)

		goto out;

	case EV_SYN:

		suppress = false;

		break;



	case EV_KEY:

		switch (code) {



		case KEY_LEFTALT:

		case KEY_RIGHTALT:

		if (value)

			sysrq_alt = code;

		else {

			if (sysrq_down && code == sysrq_alt_use)

				sysrq_down = false;

			if (!value) {

				/* One of ALTs is being released */

				if (sysrq->active && code == sysrq->alt_use)

					sysrq->active = false;



			sysrq_alt = 0;

				sysrq->alt = KEY_RESERVED;



			} else if (value != 2) {

				sysrq->alt = code;

				sysrq->need_reinject = false;

			}

			break;



		case KEY_SYSRQ:

		if (value == 1 && sysrq_alt) {

			sysrq_down = true;

			sysrq_alt_use = sysrq_alt;

			if (value == 1 && sysrq->alt != KEY_RESERVED) {

				sysrq->active = true;

				sysrq->alt_use = sysrq->alt;

				/*

				 * If nothing else will be pressed we'll need

				 * to * re-inject Alt-SysRq keysroke.

				 */

				sysrq->need_reinject = true;

			}



			/*

			 * Pretend that sysrq was never pressed at all. This

			 * is needed to properly handle KGDB which will try

			 * to release all keys after exiting debugger. If we

			 * do not clear key bit it KGDB will end up sending

			 * release events for Alt and SysRq, potentially

			 * triggering print screen function.

			 */

			if (sysrq->active)

				clear_bit(KEY_SYSRQ, handle->dev->key);



			break;



		default:

		if (sysrq_down && value && value != 2)

			if (sysrq->active && value && value != 2) {

				sysrq->need_reinject = false;

				__handle_sysrq(sysrq_xlate[code], true);

			}

			break;

		}



out:

	suppress = sysrq_down;

	spin_unlock(&sysrq_event_lock);

		suppress = sysrq->active;



		if (!sysrq->active) {

			/*

			 * If we are not suppressing key presses keep track of

			 * keyboard state so we can release keys that have been

			 * pressed before entering SysRq mode.

			 */

			if (value)

				set_bit(code, sysrq->key_down);

			else

				clear_bit(code, sysrq->key_down);



			if (was_active)

				schedule_work(&sysrq->reinject_work);



		} else if (value == 0 &&

			   test_and_clear_bit(code, sysrq->key_down)) {

			/*

			 * Pass on release events for keys that was pressed before

			 * entering SysRq mode.

			 */

			suppress = false;

		}

		break;



	default:

		suppress = sysrq->active;

		break;

	}



	return suppress;

}
@@ -617,28 +693,28 @@ static int sysrq_connect(struct input_handler *handler, 
			 struct input_dev *dev,

			 const struct input_device_id *id)

{

	struct input_handle *handle;

	struct sysrq_state *sysrq;

	int error;



	sysrq_down = false;

	sysrq_alt = 0;



	handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);

	if (!handle)

	sysrq = kzalloc(sizeof(struct sysrq_state), GFP_KERNEL);

	if (!sysrq)

		return -ENOMEM;



	handle->dev = dev;

	handle->handler = handler;

	handle->name = "sysrq";

	INIT_WORK(&sysrq->reinject_work, sysrq_reinject_alt_sysrq);



	sysrq->handle.dev = dev;

	sysrq->handle.handler = handler;

	sysrq->handle.name = "sysrq";

	sysrq->handle.private = sysrq;



	error = input_register_handle(handle);

	error = input_register_handle(&sysrq->handle);

	if (error) {

		pr_err("Failed to register input sysrq handler, error %d\n",

			error);

		goto err_free;

	}



	error = input_open_device(handle);

	error = input_open_device(&sysrq->handle);

	if (error) {

		pr_err("Failed to open input device, error %d\n", error);

		goto err_unregister;
@@ -647,17 +723,20 @@ static int sysrq_connect(struct input_handler *handler, 
	return 0;



 err_unregister:

	input_unregister_handle(handle);

	input_unregister_handle(&sysrq->handle);

 err_free:

	kfree(handle);

	kfree(sysrq);

	return error;

}



static void sysrq_disconnect(struct input_handle *handle)

{

	struct sysrq_state *sysrq = handle->private;



	input_close_device(handle);

	cancel_work_sync(&sysrq->reinject_work);

	input_unregister_handle(handle);

	kfree(handle);

	kfree(sysrq);

}



/*