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authorLadi Prosek <lprosek@redhat.com>2016-04-08 17:21:33 +0200
committerGerd Hoffmann <kraxel@redhat.com>2016-04-13 15:52:28 +0200
commit0263b3a72fbd2ac9ba59ecc2449a9bc53ccf6fb3 (patch)
tree735ddcd826a5a287013d956a1f1e407c2741cb4b
parent2d738374665ede5b7c08545e5b44a411e7c3e943 (diff)
downloadfocaccia-qemu-0263b3a72fbd2ac9ba59ecc2449a9bc53ccf6fb3.tar.gz
focaccia-qemu-0263b3a72fbd2ac9ba59ecc2449a9bc53ccf6fb3.zip
virtio-input: fix emulated tablet axis ranges
The reported maximum was wrong. The X and Y coordinates are 0-based
so if size is 8000 maximum must be 7FFF.

Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Message-id: 1460128893-10244-1-git-send-email-lprosek@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
-rw-r--r--hw/input/virtio-input-hid.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/hw/input/virtio-input-hid.c b/hw/input/virtio-input-hid.c
index fe6d37fd73..3ee0c1814a 100644
--- a/hw/input/virtio-input-hid.c
+++ b/hw/input/virtio-input-hid.c
@@ -484,12 +484,12 @@ static struct virtio_input_config virtio_tablet_config[] = {
         .select    = VIRTIO_INPUT_CFG_ABS_INFO,
         .subsel    = ABS_X,
         .size      = sizeof(virtio_input_absinfo),
-        .u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE),
+        .u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE - 1),
     },{
         .select    = VIRTIO_INPUT_CFG_ABS_INFO,
         .subsel    = ABS_Y,
         .size      = sizeof(virtio_input_absinfo),
-        .u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE),
+        .u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE - 1),
     },
     { /* end of list */ },
 };