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	lib: make igt_set_vt_graphics_mode never fail
All tests agree that this is a letal failure, so no point to pass it back to callers. Also add some igt_require calls for the drm_fd where I've noticed that it's missing. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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				@ -2111,10 +2111,9 @@ static void restore_vt_mode_at_exit(int sig)
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 * original mode.
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 */
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int igt_set_vt_graphics_mode(void)
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void igt_set_vt_graphics_mode(void)
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{
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	if (igt_install_exit_handler(restore_vt_mode_at_exit))
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		return -1;
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	do_or_die(igt_install_exit_handler(restore_vt_mode_at_exit));
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	igt_disable_exit_handler();
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	orig_vt_mode = set_vt_mode(KD_GRAPHICS);
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@ -2122,7 +2121,7 @@ int igt_set_vt_graphics_mode(void)
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		orig_vt_mode = -1UL;
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	igt_enable_exit_handler();
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	return orig_vt_mode < 0 ? -1 : 0;
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	igt_assert(orig_vt_mode >= 0);
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}
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int kmstest_get_connector_default_mode(int drm_fd, drmModeConnector *connector,
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@ -394,7 +394,7 @@ void igt_enable_exit_handler(void);
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void igt_disable_exit_handler(void);
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/* set vt into graphics mode, required to prevent fbcon from interfering */
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int igt_set_vt_graphics_mode(void);
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void igt_set_vt_graphics_mode(void);
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/* prefault disabling, needs the corresponding debugfs interface */
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void igt_disable_prefault(void);
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@ -220,7 +220,9 @@ int main(int argc, char **argv)
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		const char *cmd = "pipe A none";
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		data.drm_fd = drm_open_any();
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		do_or_die(igt_set_vt_graphics_mode());
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		igt_require(data.drm_fd >= 0);
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		igt_set_vt_graphics_mode();
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		display_init(&data);
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@ -334,7 +334,9 @@ int main(int argc, char **argv)
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		const char *cmd = "pipe A none";
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		data.drm_fd = drm_open_any();
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		do_or_die(igt_set_vt_graphics_mode());
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		igt_require(data.drm_fd >= 0);
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		igt_set_vt_graphics_mode();
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		igt_debugfs_init(&data.debugfs);
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		data.ctl = igt_debugfs_fopen(&data.debugfs,
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@ -1493,7 +1493,7 @@ int main(int argc, char **argv)
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	igt_fixture {
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		drm_fd = drm_open_any();
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		do_or_die(igt_set_vt_graphics_mode());
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		igt_set_vt_graphics_mode();
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		do_or_die(igt_install_exit_handler(kms_flip_exit_handler));
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		get_timestamp_format();
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@ -242,7 +242,7 @@ int main(int argc, char **argv)
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		devid = intel_get_drm_devid(drm_fd);
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		batch = intel_batchbuffer_alloc(bufmgr, devid);
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		do_or_die(igt_set_vt_graphics_mode());
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		igt_set_vt_graphics_mode();
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	}
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	for (i = 0; i < ARRAY_SIZE(tests); i++) {
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@ -702,7 +702,7 @@ int main(int argc, char **argv)
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	igt_fixture {
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		drm_fd = drm_open_any();
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		if (!dry_run)
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			do_or_die(igt_set_vt_graphics_mode());
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			igt_set_vt_graphics_mode();
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		drm_resources = drmModeGetResources(drm_fd);
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		assert(drm_resources);
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@ -292,7 +292,7 @@ static void init_mode_set_data(struct mode_set_data *data)
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	data->bufmgr = drm_intel_bufmgr_gem_init(drm_fd, 4096);
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	data->devid = intel_get_drm_devid(drm_fd);
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	do_or_die(igt_set_vt_graphics_mode());
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	igt_set_vt_graphics_mode();
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	drm_intel_bufmgr_gem_enable_reuse(data->bufmgr);
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}
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@ -801,7 +801,7 @@ int main(int argc, char **argv)
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		goto out_close;
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	}
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	do_or_die(igt_set_vt_graphics_mode());
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	igt_set_vt_graphics_mode();
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	mainloop = g_main_loop_new(NULL, FALSE);
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	if (!mainloop) {
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