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use blocking reading

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Vincent Wei
2020-11-10 18:12:35 +08:00
parent bde7d74f02
commit 74747f383c
1 changed files with 5 additions and 5 deletions
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src/ial/singletouchkey.c
+5 -5
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@@ -72,12 +72,11 @@ static int get_touch_data (short *x, short *y, short *button)
{
struct input_event data;
while (1) {
if (read (sg_tp_event_fd, &data, sizeof (data)) < sizeof (data))
return -1;
while (read (sg_tp_event_fd, &data, sizeof (data)) == sizeof (data)) {
if (data.type == EV_SYN && data.code == SYN_REPORT) {
break;
/* return for end of touch data sequece. */
return 0;
}
if (data.type == EV_KEY) {
@@ -94,6 +93,7 @@ static int get_touch_data (short *x, short *y, short *button)
return -1;
}
/* return immediately for EV_KEY */
return 0;
}
else if (data.type == EV_ABS) {
@@ -203,7 +203,7 @@ BOOL ial_InitSingleTouchKey (INPUT* input, const char* mdev, const char* mtype)
return FALSE;
}
sg_tp_event_fd = open (touch_dev, O_RDWR | O_NONBLOCK);
sg_tp_event_fd = open (touch_dev, O_RDONLY /*| O_NONBLOCK*/);
if (sg_tp_event_fd < 0) {
_WRN_PRINTF ("failed when opening touch event device: %s\n", touch_dev);
return FALSE;