diff options
Diffstat (limited to 'drivers/hid/hid-core.c')
| -rw-r--r-- | drivers/hid/hid-core.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 67f3347afcf3..62e21cc73938 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -4,7 +4,7 @@ * Copyright (c) 1999 Andreas Gal * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc - * Copyright (c) 2006 Jiri Kosina + * Copyright (c) 2006-2007 Jiri Kosina */ /* @@ -37,7 +37,7 @@ */ #define DRIVER_VERSION "v2.6" -#define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik" +#define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik, Jiri Kosina" #define DRIVER_DESC "HID core driver" #define DRIVER_LICENSE "GPL" @@ -872,8 +872,13 @@ static void hid_output_field(struct hid_field *field, __u8 *data) unsigned count = field->report_count; unsigned offset = field->report_offset; unsigned size = field->report_size; + unsigned bitsused = offset + count * size; unsigned n; + /* make sure the unused bits in the last byte are zeros */ + if (count > 0 && size > 0 && (bitsused % 8) != 0) + data[(bitsused-1)/8] &= (1 << (bitsused % 8)) - 1; + for (n = 0; n < count; n++) { if (field->logical_minimum < 0) /* signed values */ implement(data, offset + n * size, size, s32ton(field->value[n], size)); @@ -969,7 +974,7 @@ int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int i if (size < rsize) { dbg("report %d is too short, (%d < %d)", report->id, size, rsize); - return -1; + memset(data + size, 0, rsize - size); } if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event) |