diff options
Diffstat (limited to 'drivers/hid/hid-core.c')
| -rw-r--r-- | drivers/hid/hid-core.c | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 9072e0ed1876..2cd6880b6b17 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -126,7 +126,7 @@ static int open_collection(struct hid_parser *parser, unsigned type) if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) { hid_err(parser->device, "collection stack overflow\n"); - return -1; + return -EINVAL; } if (parser->device->maxcollection == parser->device->collection_size) { @@ -134,7 +134,7 @@ static int open_collection(struct hid_parser *parser, unsigned type) parser->device->collection_size * 2, GFP_KERNEL); if (collection == NULL) { hid_err(parser->device, "failed to reallocate collection array\n"); - return -1; + return -ENOMEM; } memcpy(collection, parser->device->collection, sizeof(struct hid_collection) * @@ -170,7 +170,7 @@ static int close_collection(struct hid_parser *parser) { if (!parser->collection_stack_ptr) { hid_err(parser->device, "collection stack underflow\n"); - return -1; + return -EINVAL; } parser->collection_stack_ptr--; return 0; @@ -374,7 +374,7 @@ static int hid_parser_global(struct hid_parser *parser, struct hid_item *item) case HID_GLOBAL_ITEM_TAG_REPORT_SIZE: parser->global.report_size = item_udata(item); - if (parser->global.report_size > 96) { + if (parser->global.report_size > 128) { hid_err(parser->device, "invalid report_size %d\n", parser->global.report_size); return -1; @@ -757,6 +757,7 @@ int hid_open_report(struct hid_device *device) struct hid_item item; unsigned int size; __u8 *start; + __u8 *buf; __u8 *end; int ret; static int (*dispatch_type[])(struct hid_parser *parser, @@ -775,12 +776,21 @@ int hid_open_report(struct hid_device *device) return -ENODEV; size = device->dev_rsize; + buf = kmemdup(start, size, GFP_KERNEL); + if (buf == NULL) + return -ENOMEM; + if (device->driver->report_fixup) - start = device->driver->report_fixup(device, start, &size); + start = device->driver->report_fixup(device, buf, &size); + else + start = buf; - device->rdesc = kmemdup(start, size, GFP_KERNEL); - if (device->rdesc == NULL) + start = kmemdup(start, size, GFP_KERNEL); + kfree(buf); + if (start == NULL) return -ENOMEM; + + device->rdesc = start; device->rsize = size; parser = vzalloc(sizeof(struct hid_parser)); @@ -1448,7 +1458,14 @@ void hid_disconnect(struct hid_device *hdev) } EXPORT_SYMBOL_GPL(hid_disconnect); -/* a list of devices for which there is a specialized driver on HID bus */ +/* + * A list of devices for which there is a specialized driver on HID bus. + * + * Please note that for multitouch devices (driven by hid-multitouch driver), + * there is a proper autodetection and autoloading in place (based on presence + * of HID_DG_CONTACTID), so those devices don't need to be added to this list, + * as we are doing the right thing in hid_scan_usage(). + */ static const struct hid_device_id hid_have_special_driver[] = { { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) }, { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) }, @@ -1628,6 +1645,7 @@ static const struct hid_device_id hid_have_special_driver[] = { { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) }, { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) }, { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) }, +#if IS_ENABLED(CONFIG_HID_ROCCAT) { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) }, { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) }, { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) }, @@ -1636,6 +1654,7 @@ static const struct hid_device_id hid_have_special_driver[] = { { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) }, { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) }, { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) }, +#endif { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) }, { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) }, { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) }, |