diff options
| -rw-r--r-- | src/evdev.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/evdev.c b/src/evdev.c index 50847a8..d47b6c2 100644 --- a/src/evdev.c +++ b/src/evdev.c @@ -402,7 +402,7 @@ EvdevProcessValuators(InputInfoPtr pInfo, int v[MAX_VALUATORS], int *num_v, } if (pEvdev->rel_queued) { - int first = REL_CNT, last = 0; + int first = REL_CNT, last = -1; int i; if (pEvdev->swap_axes) { @@ -428,8 +428,11 @@ EvdevProcessValuators(InputInfoPtr pInfo, int v[MAX_VALUATORS], int *num_v, } } - *num_v = (last - first + 1); - *first_v = first; + if (last >= 0) + { + *num_v = (last - first + 1); + *first_v = first; + } } /* * Some devices only generate valid abs coords when BTN_TOOL_PEN is |