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

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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  USB HID: Add ID for eGalax Multitouch used in JooJoo tablet
  HID: hiddev: fix memory corruption due to invalid intfdata
  HID: hiddev: protect against disconnect/NULL-dereference race
  HID: picolcd: correct ordering of framebuffer freeing
  HID: picolcd: testing the wrong variable
This commit is contained in:
Linus Torvalds 2010-08-18 15:29:38 -07:00
commit d1126ad907
5 changed files with 20 additions and 6 deletions
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1
drivers/hid/hid-core.c
View File

@ -1299,6 +1299,7 @@ static const struct hid_device_id hid_blacklist[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },

9
drivers/hid/hid-egalax.c
View File

@ -159,6 +159,13 @@ static int egalax_event(struct hid_device *hid, struct hid_field *field,
{
struct egalax_data *td = hid_get_drvdata(hid);
/* Note, eGalax has two product lines: the first is resistive and
* uses a standard parallel multitouch protocol (product ID ==
* 48xx). The second is capacitive and uses an unusual "serial"
* protocol with a different message for each multitouch finger
* (product ID == 72xx). We do not yet generate a correct event
* sequence for the capacitive/serial protocol.
*/
if (hid->claimed & HID_CLAIMED_INPUT) {
struct input_dev *input = field->hidinput->input;
@ -246,6 +253,8 @@ static void egalax_remove(struct hid_device *hdev)
static const struct hid_device_id egalax_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
{ }
};
MODULE_DEVICE_TABLE(hid, egalax_devices);

1
drivers/hid/hid-ids.h
View File

@ -188,6 +188,7 @@
#define USB_VENDOR_ID_DWAV 0x0eef
#define USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER 0x0001
#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH 0x480d
#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1 0x720c
#define USB_VENDOR_ID_ELECOM 0x056e
#define USB_DEVICE_ID_ELECOM_BM084 0x0061

4
drivers/hid/hid-picolcd.c
View File

@ -547,11 +547,11 @@ static void picolcd_fb_destroy(struct fb_info *info)
ref_cnt--;
mutex_lock(&info->lock);
(*ref_cnt)--;
may_release = !ref_cnt;
may_release = !*ref_cnt;
mutex_unlock(&info->lock);
if (may_release) {
framebuffer_release(info);
vfree((u8 *)info->fix.smem_start);
framebuffer_release(info);
}
}

11
drivers/hid/usbhid/hiddev.c
View File

@ -266,13 +266,15 @@ static int hiddev_open(struct inode *inode, struct file *file)
{
struct hiddev_list *list;
struct usb_interface *intf;
struct hid_device *hid;
struct hiddev *hiddev;
int res;
intf = usb_find_interface(&hiddev_driver, iminor(inode));
if (!intf)
return -ENODEV;
hiddev = usb_get_intfdata(intf);
hid = usb_get_intfdata(intf);
hiddev = hid->hiddev;
if (!(list = kzalloc(sizeof(struct hiddev_list), GFP_KERNEL)))
return -ENOMEM;
@ -587,7 +589,7 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
struct hiddev_list *list = file->private_data;
struct hiddev *hiddev = list->hiddev;
struct hid_device *hid = hiddev->hid;
struct usb_device *dev = hid_to_usb_dev(hid);
struct usb_device *dev;
struct hiddev_collection_info cinfo;
struct hiddev_report_info rinfo;
struct hiddev_field_info finfo;
@ -601,9 +603,11 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
/* Called without BKL by compat methods so no BKL taken */
/* FIXME: Who or what stop this racing with a disconnect ?? */
if (!hiddev->exist)
if (!hiddev->exist || !hid)
return -EIO;
dev = hid_to_usb_dev(hid);
switch (cmd) {
case HIDIOCGVERSION:
@ -888,7 +892,6 @@ int hiddev_connect(struct hid_device *hid, unsigned int force)
hid->hiddev = hiddev;
hiddev->hid = hid;
hiddev->exist = 1;
usb_set_intfdata(usbhid->intf, usbhid);
retval = usb_register_dev(usbhid->intf, &hiddev_class);
if (retval) {
err_hid("Not able to get a minor for this device.");