3:18 p.m.
tree: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
head: b26975593b17c2c7188b96dba6fe9fff14480538
commit: b26975593b17c2c7188b96dba6fe9fff14480538 [2/2] display/drm/bridge: TC358775
DSI/LVDS driver
config: i386-randconfig-m021-20200816 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
smatch warnings:
drivers/gpu/drm/bridge/tc358775.c:687 tc_probe() warn: passing zero to 'PTR_ERR'
vim +/PTR_ERR +687 drivers/gpu/drm/bridge/tc358775.c
648
649 static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id)
650 {
651 struct device *dev = &client->dev;
652 struct drm_panel *panel;
653 struct tc_data *tc;
654 int ret;
655
656 tc = devm_kzalloc(dev, sizeof(*tc), GFP_KERNEL);
657 if (!tc)
658 return -ENOMEM;
659
660 tc->dev = dev;
661 tc->i2c = client;
662
663 ret = drm_of_find_panel_or_bridge(dev->of_node, TC358775_LVDS_OUT0,
664 0, &panel, NULL);
665 if (ret < 0)
666 return ret;
667 if (!panel)
668 return -ENODEV;
669
670 tc->panel_bridge = devm_drm_panel_bridge_add(dev, panel);
671 if (IS_ERR(tc->panel_bridge))
672 return PTR_ERR(tc->panel_bridge);
673
674 ret = tc358775_parse_dt(dev->of_node, tc);
675 if (ret)
676 return ret;
677
678 tc->vddio = devm_regulator_get(dev, "vddio-supply");
679 if (IS_ERR(tc->vddio)) {
680 ret = PTR_ERR(tc->vddio);
681 dev_err(dev, "vddio-supply not found\n");
682 return ret;
683 }
684
685 tc->vdd = devm_regulator_get(dev, "vdd-supply");
686 if (IS_ERR(tc->vdd)) {
687 ret = PTR_ERR(tc->vddio);
688 dev_err(dev,
"vdd-supply not found\n");
689 return ret;
690 }
691
692 tc->stby_gpio = devm_gpiod_get(dev, "stby", GPIOD_OUT_HIGH);
693 if (IS_ERR(tc->stby_gpio)) {
694 ret = PTR_ERR(tc->stby_gpio);
695 dev_err(dev, "cannot get stby-gpio %d\n", ret);
696 return ret;
697 }
698
699 tc->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
700 if (IS_ERR(tc->reset_gpio)) {
701 ret = PTR_ERR(tc->reset_gpio);
702 dev_err(dev, "cannot get reset-gpios %d\n", ret);
703 return ret;
704 }
705
706 tc->bridge.funcs = &tc_bridge_funcs;
707 tc->bridge.of_node = dev->of_node;
708 drm_bridge_add(&tc->bridge);
709
710 i2c_set_clientdata(client, tc);
711
712 return 0;
713 }
714
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