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: ALPS - fix forward/back buttons reversed on Acer 5520-5290 Input: ALPS - put secondary device in proper place in sysfs Input: wacom - add support for Bamboo1, BambooFun, and Cintiq 12WX Input: document i8042.noloop Input: add keyboard notifier documentation Input: ads7846 - fix uninitialized var warning Input: i8042 - add SNI RM support Input: i8042 - add Lenovo 3000 N100 to nomux blacklist Input: i8042 - fix warning on non-x86 builds Input: cobalt_btns - assorted fixes
2024-12-28 11:46:19 +00:00 · 2008-03-18 07:46:19 -07:00 · 2008-03-18 07:46:19 -07:00 · fb00f7629b
commit fb00f7629b
parent 992ab12ac3 3c00bb9649
13 changed files with 183 additions and 25 deletions
--- a/Documentation/input/notifier.txt
+++ b/Documentation/input/notifier.txt
@ -0,0 +1,52 @@
+Keyboard notifier
+
+One can use register_keyboard_notifier to get called back on keyboard
+events (see kbd_keycode() function for details).  The passed structure is
+keyboard_notifier_param:
+
+- 'vc' always provide the VC for which the keyboard event applies;
+- 'down' is 1 for a key press event, 0 for a key release;
+- 'shift' is the current modifier state, mask bit indexes are KG_*;
+- 'value' depends on the type of event.
+
+- KBD_KEYCODE events are always sent before other events, value is the keycode.
+- KBD_UNBOUND_KEYCODE events are sent if the keycode is not bound to a keysym.
+  value is the keycode.
+- KBD_UNICODE events are sent if the keycode -> keysym translation produced a
+  unicode character. value is the unicode value.
+- KBD_KEYSYM events are sent if the keycode -> keysym translation produced a
+  non-unicode character. value is the keysym.
+- KBD_POST_KEYSYM events are sent after the treatment of non-unicode keysyms.
+  That permits one to inspect the resulting LEDs for instance.
+
+For each kind of event but the last, the callback may return NOTIFY_STOP in
+order to "eat" the event: the notify loop is stopped and the keyboard event is
+dropped.
+
+In a rough C snippet, we have:
+
+kbd_keycode(keycode) {
+	...
+	params.value = keycode;
+	if (notifier_call_chain(KBD_KEYCODE,&params) == NOTIFY_STOP)
+	    || !bound) {
+		notifier_call_chain(KBD_UNBOUND_KEYCODE,&params);
+		return;
+	}
+
+	if (unicode) {
+		param.value = unicode;
+		if (notifier_call_chain(KBD_UNICODE,&params) == NOTIFY_STOP)
+			return;
+		emit unicode;
+		return;
+	}
+
+	params.value = keysym;
+	if (notifier_call_chain(KBD_KEYSYM,&params) == NOTIFY_STOP)
+		return;
+	apply keysym;
+	notifier_call_chain(KBD_POST_KEYSYM,&params);
+}
+
+NOTE: This notifier is usually called from interrupt context.
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@ -732,6 +732,8 @@ and is between 256 and 4096 characters. It is defined in the file
 			     (Don't attempt to blink the leds)
 	i8042.noaux	[HW] Don't check for auxiliary (== mouse) port
 	i8042.nokbd	[HW] Don't check/create keyboard port
+	i8042.noloop	[HW] Disable the AUX Loopback command while probing
+			     for the AUX port
 	i8042.nomux	[HW] Don't check presence of an active multiplexing
 			     controller
 	i8042.nopnp	[HW] Don't use ACPIPnP / PnPBIOS to discover KBD/AUX
--- a/drivers/input/misc/cobalt_btns.c
+++ b/drivers/input/misc/cobalt_btns.c
@ -1,7 +1,7 @@
 /*
 *  Cobalt button interface driver.
 *
- *  Copyright (C) 2007  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
+ *  Copyright (C) 2007-2008  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
@ -15,7 +15,7 @@
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 #include <linux/init.h>
 #include <linux/input-polldev.h>
@ -55,7 +55,7 @@ static void handle_buttons(struct input_polled_dev *dev)
 	status = ~readl(bdev->reg) >> 24;

 	for (i = 0; i < ARRAY_SIZE(bdev->keymap); i++) {
-		if (status & (1UL << i)) {
+		if (status & (1U << i)) {
 			if (++bdev->count[i] == BUTTONS_COUNT_THRESHOLD) {
 				input_event(input, EV_MSC, MSC_SCAN, i);
 				input_report_key(input, bdev->keymap[i], 1);
@ -97,16 +97,16 @@ static int __devinit cobalt_buttons_probe(struct platform_device *pdev)
 	input->name = "Cobalt buttons";
 	input->phys = "cobalt/input0";
 	input->id.bustype = BUS_HOST;
-	input->cdev.dev = &pdev->dev;
+	input->dev.parent = &pdev->dev;

-	input->keycode = pdev->keymap;
-	input->keycodemax = ARRAY_SIZE(pdev->keymap);
+	input->keycode = bdev->keymap;
+	input->keycodemax = ARRAY_SIZE(bdev->keymap);
 	input->keycodesize = sizeof(unsigned short);

 	input_set_capability(input, EV_MSC, MSC_SCAN);
 	__set_bit(EV_KEY, input->evbit);
-	for (i = 0; i < ARRAY_SIZE(buttons_map); i++)
-		__set_bit(input->keycode[i], input->keybit);
+	for (i = 0; i < ARRAY_SIZE(cobalt_map); i++)
+		__set_bit(bdev->keymap[i], input->keybit);
 	__clear_bit(KEY_RESERVED, input->keybit);

 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@ -116,8 +116,8 @@ static void alps_process_packet(struct psmouse *psmouse)
 	}

 	if (priv->i->flags & ALPS_FW_BK_1) {
-		back = packet[2] & 4;
-		forward = packet[0] & 0x10;
+		back = packet[0] & 0x10;
+		forward = packet[2] & 4;
 	}

 	if (priv->i->flags & ALPS_FW_BK_2) {
@ -483,6 +483,7 @@ int alps_init(struct psmouse *psmouse)
 	dev2->id.vendor  = 0x0002;
 	dev2->id.product = PSMOUSE_ALPS;
 	dev2->id.version = 0x0000;
+	dev2->dev.parent = &psmouse->ps2dev.serio->dev;

 	dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
 	dev2->relbit[BIT_WORD(REL_X)] |= BIT_MASK(REL_X) | BIT_MASK(REL_Y);
--- a/drivers/input/serio/i8042-snirm.h
+++ b/drivers/input/serio/i8042-snirm.h
@ -0,0 +1,75 @@
+#ifndef _I8042_SNIRM_H
+#define _I8042_SNIRM_H
+
+#include <asm/sni.h>
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+/*
+ * Names.
+ */
+
+#define I8042_KBD_PHYS_DESC "onboard/serio0"
+#define I8042_AUX_PHYS_DESC "onboard/serio1"
+#define I8042_MUX_PHYS_DESC "onboard/serio%d"
+
+/*
+ * IRQs.
+ */
+static int i8042_kbd_irq;
+static int i8042_aux_irq;
+#define I8042_KBD_IRQ i8042_kbd_irq
+#define I8042_AUX_IRQ i8042_aux_irq
+
+static void __iomem *kbd_iobase;
+
+#define I8042_COMMAND_REG	(kbd_iobase + 0x64UL)
+#define I8042_DATA_REG		(kbd_iobase + 0x60UL)
+
+static inline int i8042_read_data(void)
+{
+	return readb(kbd_iobase + 0x60UL);
+}
+
+static inline int i8042_read_status(void)
+{
+	return readb(kbd_iobase + 0x64UL);
+}
+
+static inline void i8042_write_data(int val)
+{
+	writeb(val, kbd_iobase + 0x60UL);
+}
+
+static inline void i8042_write_command(int val)
+{
+	writeb(val, kbd_iobase + 0x64UL);
+}
+static inline int i8042_platform_init(void)
+{
+	/* RM200 is strange ... */
+	if (sni_brd_type == SNI_BRD_RM200) {
+		kbd_iobase = ioremap(0x16000000, 4);
+		i8042_kbd_irq = 33;
+		i8042_aux_irq = 44;
+	} else {
+		kbd_iobase = ioremap(0x14000000, 4);
+		i8042_kbd_irq = 1;
+		i8042_aux_irq = 12;
+	}
+	if (!kbd_iobase)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static inline void i8042_platform_exit(void)
+{
+
+}
+
+#endif /* _I8042_SNIRM_H */
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@ -277,6 +277,13 @@ static struct dmi_system_id __initdata i8042_dmi_nomux_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "M636/A737 platform"),
 		},
 	},
+	{
+		.ident = "Lenovo 3000 n100",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
+		},
+	},
 	{ }
 };

--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@ -1151,7 +1151,6 @@ static int __devinit i8042_setup_kbd(void)
 static int __devinit i8042_probe(struct platform_device *dev)
 {
 	int error;
-	char param;

 	error = i8042_controller_selftest();
 	if (error)
@ -1174,7 +1173,7 @@ static int __devinit i8042_probe(struct platform_device *dev)
 	}
 #ifdef CONFIG_X86
 	if (i8042_dritek) {
-		param = 0x90;
+		char param = 0x90;
 		error = i8042_command(&param, 0x1059);
 		if (error)
 			goto out_fail;
--- a/drivers/input/serio/i8042.h
+++ b/drivers/input/serio/i8042.h
@ -18,6 +18,8 @@
 #include "i8042-jazzio.h"
 #elif defined(CONFIG_SGI_HAS_I8042)
 #include "i8042-ip22io.h"
+#elif defined(CONFIG_SNI_RM)
+#include "i8042-snirm.h"
 #elif defined(CONFIG_PPC)
 #include "i8042-ppcio.h"
 #elif defined(CONFIG_SPARC)
--- a/drivers/input/tablet/wacom.h
+++ b/drivers/input/tablet/wacom.h
@ -11,7 +11,7 @@
 *  Copyright (c) 2000 Daniel Egger		<egger@suse.de>
 *  Copyright (c) 2001 Frederic Lepied		<flepied@mandrakesoft.com>
 *  Copyright (c) 2004 Panagiotis Issaris	<panagiotis.issaris@mech.kuleuven.ac.be>
- *  Copyright (c) 2002-2007 Ping Cheng		<pingc@wacom.com>
+ *  Copyright (c) 2002-2008 Ping Cheng		<pingc@wacom.com>
 *
 *  ChangeLog:
 *      v0.1 (vp)  - Initial release
@ -65,6 +65,7 @@
 *		   - and wacom_wac.c deals with Wacom specific code
 *		   - Support Intuos3 4x6
 *      v1.47 (pc) - Added support for Bamboo
+ *      v1.48 (pc) - Added support for Bamboo1, BambooFun, and Cintiq 12WX
 */

 /*
@ -85,7 +86,7 @@
 /*
 * Version Information
 */
-#define DRIVER_VERSION "v1.47"
+#define DRIVER_VERSION "v1.48"
 #define DRIVER_AUTHOR "Vojtech Pavlik <vojtech@ucw.cz>"
 #define DRIVER_DESC "USB Wacom Graphire and Wacom Intuos tablet driver"
 #define DRIVER_LICENSE "GPL"
@ -125,6 +126,7 @@ extern void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac
 extern void input_dev_pl(struct input_dev *input_dev, struct wacom_wac *wacom_wac);
 extern void input_dev_pt(struct input_dev *input_dev, struct wacom_wac *wacom_wac);
 extern void input_dev_mo(struct input_dev *input_dev, struct wacom_wac *wacom_wac);
+extern void input_dev_bee(struct input_dev *input_dev, struct wacom_wac *wacom_wac);
 extern __u16 wacom_le16_to_cpu(unsigned char *data);
 extern __u16 wacom_be16_to_cpu(unsigned char *data);
 extern struct wacom_features * get_wacom_feature(const struct usb_device_id *id);
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@ -171,6 +171,7 @@ void input_dev_i3s(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 	input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_0) |
 		BIT_MASK(BTN_1) | BIT_MASK(BTN_2) | BIT_MASK(BTN_3);
 	input_set_abs_params(input_dev, ABS_RX, 0, 4096, 0, 0);
+	input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
 }

 void input_dev_i3(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
@ -180,6 +181,11 @@ void input_dev_i3(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 	input_set_abs_params(input_dev, ABS_RY, 0, 4096, 0, 0);
 }

+void input_dev_bee(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
+{
+	input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_8) | BIT_MASK(BTN_9);
+}
+
 void input_dev_i(struct input_dev *input_dev, struct wacom_wac *wacom_wac)
 {
 	input_dev->evbit[0] |= BIT_MASK(EV_MSC) | BIT_MASK(EV_REL);
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@ -163,7 +163,9 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
 	}

 	id = STYLUS_DEVICE_ID;
-	if (data[1] & 0x80) { /* in prox */
+	if ((data[1] & 0x80) && ((data[1] & 0x07) || data[2] || data[3] || data[4]
+			|| data[5] || data[6] || (data[7] & 0x07))) {
+		/* in prox and not a pad data */

 		switch ((data[1] >> 5) & 3) {

@ -233,7 +235,6 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
 		if (data[7] & 0xf8) {
 			wacom_input_sync(wcombo); /* sync last event */
 			wacom->id[1] = 1;
-			wacom->serial[1] = (data[7] & 0xf8);
 			wacom_report_key(wcombo, BTN_0, (data[7] & 0x40));
 			wacom_report_key(wcombo, BTN_4, (data[7] & 0x80));
 			rw = ((data[7] & 0x18) >> 3) - ((data[7] & 0x20) >> 3);
@ -252,10 +253,9 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
 		}
 		break;
 	    case WACOM_MO:
-		if ((data[7] & 0xf8) || (data[8] & 0x80)) {
+		if ((data[7] & 0xf8) || (data[8] & 0xff)) {
 			wacom_input_sync(wcombo); /* sync last event */
 			wacom->id[1] = 1;
-			wacom->serial[1] = (data[7] & 0xf8);
 			wacom_report_key(wcombo, BTN_0, (data[7] & 0x08));
 			wacom_report_key(wcombo, BTN_1, (data[7] & 0x20));
 			wacom_report_key(wcombo, BTN_4, (data[7] & 0x10));
@ -434,10 +434,12 @@ static int wacom_intuos_irq(struct wacom_wac *wacom, void *wcombo)
 		wacom_report_key(wcombo, BTN_5, (data[6] & 0x02));
 		wacom_report_key(wcombo, BTN_6, (data[6] & 0x04));
 		wacom_report_key(wcombo, BTN_7, (data[6] & 0x08));
+		wacom_report_key(wcombo, BTN_8, (data[5] & 0x10));
+		wacom_report_key(wcombo, BTN_9, (data[6] & 0x10));
 		wacom_report_abs(wcombo, ABS_RX, ((data[1] & 0x1f) << 8) | data[2]);
 		wacom_report_abs(wcombo, ABS_RY, ((data[3] & 0x1f) << 8) | data[4]);

-		if((data[5] & 0x0f) | (data[6] & 0x0f) | (data[1] & 0x1f) |
+		if ((data[5] & 0x1f) | (data[6] & 0x1f) | (data[1] & 0x1f) |
 			data[2] | (data[3] & 0x1f) | data[4])
 			wacom_report_key(wcombo, wacom->tool[1], 1);
 		else
@ -481,13 +483,11 @@ static int wacom_intuos_irq(struct wacom_wac *wacom, void *wcombo)
 		if (data[1] & 0x02) {
 			/* Rotation packet */
 			if (wacom->features->type >= INTUOS3S) {
-				/* I3 marker pen rotation reported as wheel
-				 * due to valuator limitation
-				 */
+				/* I3 marker pen rotation */
 				t = (data[6] << 3) | ((data[7] >> 5) & 7);
 				t = (data[7] & 0x20) ? ((t > 900) ? ((t-1) / 2 - 1350) :
 					((t-1) / 2 + 450)) : (450 - t / 2) ;
-				wacom_report_abs(wcombo, ABS_WHEEL, t);
+				wacom_report_abs(wcombo, ABS_Z, t);
 			} else {
 				/* 4D mouse rotation packet */
 				t = (data[6] << 3) | ((data[7] >> 5) & 7);
@ -558,6 +558,7 @@ int wacom_wac_irq(struct wacom_wac *wacom_wac, void *wcombo)
 		case INTUOS3:
 		case INTUOS3L:
 		case CINTIQ:
+		case WACOM_BEE:
 			return (wacom_intuos_irq(wacom_wac, wcombo));
 			break;
 		default:
@ -577,6 +578,8 @@ void wacom_init_input_dev(struct input_dev *input_dev, struct wacom_wac *wacom_w
 		case GRAPHIRE:
 			input_dev_g(input_dev, wacom_wac);
 			break;
+		case WACOM_BEE:
+			input_dev_bee(input_dev, wacom_wac);
 		case INTUOS3:
 		case INTUOS3L:
 		case CINTIQ:
@ -607,12 +610,15 @@ static struct wacom_features wacom_features[] = {
 	{ "Wacom Graphire3 6x8", 8,  16704, 12064,  511, 63, GRAPHIRE },
 	{ "Wacom Graphire4 4x5", 8,  10208,  7424,  511, 63, WACOM_G4 },
 	{ "Wacom Graphire4 6x8", 8,  16704, 12064,  511, 63, WACOM_G4 },
+	{ "Wacom BambooFun 4x5", 9,  14760,  9225,  511, 63, WACOM_MO },
+	{ "Wacom BambooFun 6x8", 9,  21648, 13530,  511, 63, WACOM_MO },
 	{ "Wacom Volito",        8,   5104,  3712,  511, 63, GRAPHIRE },
 	{ "Wacom PenStation2",   8,   3250,  2320,  255, 63, GRAPHIRE },
 	{ "Wacom Volito2 4x5",   8,   5104,  3712,  511, 63, GRAPHIRE },
 	{ "Wacom Volito2 2x3",   8,   3248,  2320,  511, 63, GRAPHIRE },
-	{ "Wacom PenPartner2",   8,   3250,  2320,  255, 63, GRAPHIRE },
+	{ "Wacom PenPartner2",   8,   3250,  2320,  511, 63, GRAPHIRE },
 	{ "Wacom Bamboo",        9,  14760,  9225,  511, 63, WACOM_MO },
+	{ "Wacom Bamboo1",       8,   5104,  3712,  511, 63, GRAPHIRE },
 	{ "Wacom Intuos 4x5",   10,  12700, 10600, 1023, 31, INTUOS },
 	{ "Wacom Intuos 6x8",   10,  20320, 16240, 1023, 31, INTUOS },
 	{ "Wacom Intuos 9x12",  10,  30480, 24060, 1023, 31, INTUOS },
@ -643,6 +649,7 @@ static struct wacom_features wacom_features[] = {
 	{ "Wacom Intuos3 6x11",  10, 54204, 31750, 1023, 63, INTUOS3 },
 	{ "Wacom Intuos3 4x6",   10, 31496, 19685, 1023, 63, INTUOS3S },
 	{ "Wacom Cintiq 21UX",   10, 87200, 65600, 1023, 63, CINTIQ },
+	{ "Wacom Cintiq 12WX",   10, 53020, 33440, 1023, 63, WACOM_BEE },
 	{ "Wacom Intuos2 6x8",   10, 20320, 16240, 1023, 31, INTUOS },
 	{ }
 };
@ -656,12 +663,15 @@ static struct usb_device_id wacom_ids[] = {
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x14) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x15) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x16) },
+	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x17) },
+	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x18) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x60) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x61) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x62) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x63) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x64) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x65) },
+	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x69) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x20) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x21) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x22) },
@ -692,6 +702,7 @@ static struct usb_device_id wacom_ids[] = {
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB5) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0xB7) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x3F) },
+	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0xC6) },
 	{ USB_DEVICE(USB_VENDOR_ID_WACOM, 0x47) },
 	{ }
 };
--- a/drivers/input/tablet/wacom_wac.h
+++ b/drivers/input/tablet/wacom_wac.h
@ -25,6 +25,7 @@ enum {
 	INTUOS3,
 	INTUOS3L,
 	CINTIQ,
+	WACOM_BEE,
 	WACOM_MO,
 	MAX_TYPE
 };
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@ -213,7 +213,7 @@ static int ads7846_read12_ser(struct device *dev, unsigned command)
 	struct ads7846		*ts = dev_get_drvdata(dev);
 	struct ser_req		*req = kzalloc(sizeof *req, GFP_KERNEL);
 	int			status;
-	int			sample;
+	int			uninitialized_var(sample);
 	int			use_internal;

 	if (!req)