diff options
| -rw-r--r-- | lib/igt_debugfs.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/lib/igt_debugfs.c b/lib/igt_debugfs.c index f3196f43..4de6b247 100644 --- a/lib/igt_debugfs.c +++ b/lib/igt_debugfs.c @@ -35,6 +35,7 @@ #include <fcntl.h> #include <unistd.h> #include <i915_drm.h> +#include <poll.h> #include "drmtest.h" #include "igt_aux.h" @@ -748,6 +749,7 @@ static void read_one_crc(igt_pipe_crc_t *pipe_crc, igt_crc_t *out) void igt_pipe_crc_start(igt_pipe_crc_t *pipe_crc) { const char *src = pipe_crc_source_name(pipe_crc->source); + struct pollfd pfd; char buf[32]; /* Stop first just to make sure we don't have lingering state left. */ @@ -757,11 +759,16 @@ void igt_pipe_crc_start(igt_pipe_crc_t *pipe_crc) sprintf(buf, "crtc-%d/crc/data", pipe_crc->pipe); - igt_set_timeout(10, "Opening crc fd, which waits for first CRC."); + igt_set_timeout(10, "Opening crc fd, and poll for first CRC."); pipe_crc->crc_fd = openat(pipe_crc->dir, buf, pipe_crc->flags); + igt_assert(pipe_crc->crc_fd != -1); + + pfd.fd = pipe_crc->crc_fd; + pfd.events = POLLIN; + poll(&pfd, 1, -1); + igt_reset_timeout(); - igt_assert(pipe_crc->crc_fd != -1); errno = 0; } |