ahoneybun/qmk_firmware
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Merge remote-tracking branch 'origin/master' into develop

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QMK Bot 2021-04-10 15:04:12 +00:00
commit d5a8431af4
1 changed files with 13 additions and 1 deletions
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14
tmk_core/protocol/chibios/usb_driver.c
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@ -80,7 +80,19 @@ static bool qmkusb_start_receive(QMKUSBDriver *qmkusbp) {
* Interface implementation.
*/
static size_t _write(void *ip, const uint8_t *bp, size_t n) { return obqWriteTimeout(&((QMKUSBDriver *)ip)->obqueue, bp, n, TIME_INFINITE); }
static size_t _write(void *ip, const uint8_t *bp, size_t n) {
output_buffers_queue_t *obqueue = &((QMKUSBDriver *)ip)->obqueue;
chSysLock();
const bool full = obqIsFullI(obqueue);
chSysUnlock();
if (full || bqIsSuspendedX(obqueue)) {
/* Discard any writes while the queue is suspended or full, i.e. the hidraw
interface is not open. If we tried to send with an infinite timeout, we
would deadlock the keyboard otherwise. */
return -1;
}
return obqWriteTimeout(obqueue, bp, n, TIME_INFINITE);
}
static size_t _read(void *ip, uint8_t *bp, size_t n) { return ibqReadTimeout(&((QMKUSBDriver *)ip)->ibqueue, bp, n, TIME_INFINITE); }