linux_udev: Retry poll() on EINTR

[platform/upstream/libusb.git] / libusb / os / linux_udev.c

diff --git a/libusb/os/linux_udev.c b/libusb/os/linux_udev.c
index ea27142..61d953d 100644 (file)
--- a/libusb/os/linux_udev.c
+++ b/libusb/os/linux_udev.c
@@ -172,7 +172,11 @@ static void *linux_udev_event_thread_main(void *arg)
 
        usbi_dbg("udev event thread entering.");
 
-       while (poll(fds, 2, -1) >= 0) {
+       while ((r = poll(fds, 2, -1)) >= 0 || errno == EINTR) {
+               if (r < 0) {
+                       /* temporary failure */
+                       continue;
+               }
                if (fds[0].revents & POLLIN) {
                        /* activity on control pipe, read the byte and exit */
                        r = usbi_read(udev_control_pipe[0], &dummy, sizeof(dummy));