diff options
Diffstat (limited to 'src/plugins/generic/evdevtouch/qevdevtouch.cpp')
| -rw-r--r-- | src/plugins/generic/evdevtouch/qevdevtouch.cpp | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/src/plugins/generic/evdevtouch/qevdevtouch.cpp b/src/plugins/generic/evdevtouch/qevdevtouch.cpp index c9c49839d6..1c3e8952e9 100644 --- a/src/plugins/generic/evdevtouch/qevdevtouch.cpp +++ b/src/plugins/generic/evdevtouch/qevdevtouch.cpp @@ -253,26 +253,30 @@ void QTouchScreenHandler::readData() int n = 0; for (; ;) { #ifdef USE_MTDEV - n = mtdev_get(m_mtdev, m_fd, buffer, sizeof(buffer) / sizeof(::input_event)); - if (n > 0) - n *= sizeof(::input_event); + int result = mtdev_get(m_mtdev, m_fd, buffer, sizeof(buffer) / sizeof(::input_event)); + if (result > 0) + result *= sizeof(::input_event); #else - n = QT_READ(m_fd, reinterpret_cast<char*>(buffer) + n, sizeof(buffer) - n); + int result = QT_READ(m_fd, reinterpret_cast<char*>(buffer) + n, sizeof(buffer) - n); #endif - if (!n) { + if (!result) { qWarning("Got EOF from input device"); return; - } else if (n < 0 && (errno != EINTR && errno != EAGAIN)) { - qWarning("Could not read from input device: %s", strerror(errno)); - if (errno == ENODEV) { // device got disconnected -> stop reading - delete m_notify; - m_notify = 0; - QT_CLOSE(m_fd); - m_fd = -1; + } else if (result < 0) { + if (errno != EINTR && errno != EAGAIN) { + qWarning("Could not read from input device: %s", strerror(errno)); + if (errno == ENODEV) { // device got disconnected -> stop reading + delete m_notify; + m_notify = 0; + QT_CLOSE(m_fd); + m_fd = -1; + } + return; } - return; - } else if (n % sizeof(::input_event) == 0) { - break; + } else { + n += result; + if (n % sizeof(::input_event) == 0) + break; } } |