Commit cee5aa1f authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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

Pull HID fixes from Jiri Kosina:

 - fixes for a couple potential memory corruption problems (the HW would
   have to be manufactured to be deliberately evil to trigger those)
   found by Ben Hawkes
 - fix for potential infinite loop when using sysfs interface of
   logitech driver, from Simon Wood
 - a couple more simple driver fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: fix a couple of off-by-ones
  HID: logitech: perform bounds checking on device_id early enough
  HID: logitech: fix bounds checking on LED report size
  HID: logitech: Prevent possibility of infinite loop when using /sys interface
  HID: rmi: print an error if F11 is not found instead of stopping the device
  HID: hid-sensor-hub: use devm_ functions consistently
  HID: huion: Use allocated buffer for DMA
  HID: huion: Fail on parameter retrieval errors
parents e9d99a1d 4ab25786

drivers/hid/hid-cherry.c

+1 −1
Original line number Diff line number Diff line
@@ -28,7 +28,7 @@ 
static __u8 *ch_report_fixup(struct hid_device *hdev, __u8 *rdesc,

		unsigned int *rsize)

{

	if (*rsize >= 17 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {

	if (*rsize >= 18 && rdesc[11] == 0x3c && rdesc[12] == 0x02) {

		hid_info(hdev, "fixing up Cherry Cymotion report descriptor\n");

		rdesc[11] = rdesc[16] = 0xff;

		rdesc[12] = rdesc[17] = 0x03;

drivers/hid/hid-huion.c

+78 −50
Original line number Diff line number Diff line
@@ -84,6 +84,15 @@ static const __u8 huion_tablet_rdesc_template[] = { 
	0xC0                    /*  End Collection                          */

};



/* Parameter indices */

enum huion_prm {

	HUION_PRM_X_LM		= 1,

	HUION_PRM_Y_LM		= 2,

	HUION_PRM_PRESSURE_LM	= 4,

	HUION_PRM_RESOLUTION	= 5,

	HUION_PRM_NUM

};



/* Driver data */

struct huion_drvdata {

	__u8 *rdesc;
@@ -115,7 +124,12 @@ static int huion_tablet_enable(struct hid_device *hdev) 
	int rc;

	struct usb_device *usb_dev = hid_to_usb_dev(hdev);

	struct huion_drvdata *drvdata = hid_get_drvdata(hdev);

	__le16 buf[6];

	__le16 *buf = NULL;

	size_t len;

	s32 params[HUION_PH_ID_NUM];

	s32 resolution;

	__u8 *p;

	s32 v;



	/*

	 * Read string descriptor containing tablet parameters. The specific
@@ -123,28 +137,38 @@ static int huion_tablet_enable(struct hid_device *hdev) 
	 * driver traffic.

	 * NOTE: This enables fully-functional tablet mode.

	 */

	len = HUION_PRM_NUM * sizeof(*buf);

	buf = kmalloc(len, GFP_KERNEL);

	if (buf == NULL) {

		hid_err(hdev, "failed to allocate parameter buffer\n");

		rc = -ENOMEM;

		goto cleanup;

	}

	rc = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),

				USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,

				(USB_DT_STRING << 8) + 0x64,

				0x0409, buf, sizeof(buf),

				0x0409, buf, len,

				USB_CTRL_GET_TIMEOUT);

	if (rc == -EPIPE)

		hid_warn(hdev, "device parameters not found\n");

	else if (rc < 0)

		hid_warn(hdev, "failed to get device parameters: %d\n", rc);

	else if (rc != sizeof(buf))

		hid_warn(hdev, "invalid device parameters\n");

	else {

		s32 params[HUION_PH_ID_NUM];

		s32 resolution;

		__u8 *p;

		s32 v;

	if (rc == -EPIPE) {

		hid_err(hdev, "device parameters not found\n");

		rc = -ENODEV;

		goto cleanup;

	} else if (rc < 0) {

		hid_err(hdev, "failed to get device parameters: %d\n", rc);

		rc = -ENODEV;

		goto cleanup;

	} else if (rc != len) {

		hid_err(hdev, "invalid device parameters\n");

		rc = -ENODEV;

		goto cleanup;

	}



	/* Extract device parameters */

		params[HUION_PH_ID_X_LM] = le16_to_cpu(buf[1]);

		params[HUION_PH_ID_Y_LM] = le16_to_cpu(buf[2]);

		params[HUION_PH_ID_PRESSURE_LM] = le16_to_cpu(buf[4]);

		resolution = le16_to_cpu(buf[5]);

	params[HUION_PH_ID_X_LM] = le16_to_cpu(buf[HUION_PRM_X_LM]);

	params[HUION_PH_ID_Y_LM] = le16_to_cpu(buf[HUION_PRM_Y_LM]);

	params[HUION_PH_ID_PRESSURE_LM] =

		le16_to_cpu(buf[HUION_PRM_PRESSURE_LM]);

	resolution = le16_to_cpu(buf[HUION_PRM_RESOLUTION]);

	if (resolution == 0) {

		params[HUION_PH_ID_X_PM] = 0;

		params[HUION_PH_ID_Y_PM] = 0;
@@ -161,7 +185,8 @@ static int huion_tablet_enable(struct hid_device *hdev) 
				GFP_KERNEL);

	if (drvdata->rdesc == NULL) {

		hid_err(hdev, "failed to allocate fixed rdesc\n");

			return -ENOMEM;

		rc = -ENOMEM;

		goto cleanup;

	}

	drvdata->rsize = sizeof(huion_tablet_rdesc_template);
@@ -179,9 +204,12 @@ static int huion_tablet_enable(struct hid_device *hdev) 
			p++;

		}

	}

	}



	return 0;

	rc = 0;



cleanup:

	kfree(buf);

	return rc;

}



static int huion_probe(struct hid_device *hdev, const struct hid_device_id *id)

drivers/hid/hid-kye.c

+1 −1
Original line number Diff line number Diff line
@@ -300,7 +300,7 @@ static __u8 *kye_report_fixup(struct hid_device *hdev, __u8 *rdesc, 
		 *   - change the button usage range to 4-7 for the extra

		 *     buttons

		 */

		if (*rsize >= 74 &&

		if (*rsize >= 75 &&

			rdesc[61] == 0x05 && rdesc[62] == 0x08 &&

			rdesc[63] == 0x19 && rdesc[64] == 0x08 &&

			rdesc[65] == 0x29 && rdesc[66] == 0x0f &&

drivers/hid/hid-lg.c

+2 −2
Original line number Diff line number Diff line
@@ -345,14 +345,14 @@ static __u8 *lg_report_fixup(struct hid_device *hdev, __u8 *rdesc, 
	struct usb_device_descriptor *udesc;

	__u16 bcdDevice, rev_maj, rev_min;



	if ((drv_data->quirks & LG_RDESC) && *rsize >= 90 && rdesc[83] == 0x26 &&

	if ((drv_data->quirks & LG_RDESC) && *rsize >= 91 && rdesc[83] == 0x26 &&

			rdesc[84] == 0x8c && rdesc[85] == 0x02) {

		hid_info(hdev,

			 "fixing up Logitech keyboard report descriptor\n");

		rdesc[84] = rdesc[89] = 0x4d;

		rdesc[85] = rdesc[90] = 0x10;

	}

	if ((drv_data->quirks & LG_RDESC_REL_ABS) && *rsize >= 50 &&

	if ((drv_data->quirks & LG_RDESC_REL_ABS) && *rsize >= 51 &&

			rdesc[32] == 0x81 && rdesc[33] == 0x06 &&

			rdesc[49] == 0x81 && rdesc[50] == 0x06) {

		hid_info(hdev,

drivers/hid/hid-lg4ff.c

+2 −2
Original line number Diff line number Diff line
@@ -451,13 +451,13 @@ static ssize_t lg4ff_range_store(struct device *dev, struct device_attribute *at 
	drv_data = hid_get_drvdata(hid);

	if (!drv_data) {

		hid_err(hid, "Private driver data not found!\n");

		return 0;

		return -EINVAL;

	}



	entry = drv_data->device_props;

	if (!entry) {

		hid_err(hid, "Device properties not found!\n");

		return 0;

		return -EINVAL;

	}



	if (range == 0)

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