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MLK-16137 video: fbdev: add defer probe for mxs framebuffer

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When mxs framebuffer probes, the DISPDRV (here is MIPI DSI driver) is likely
not ready, then mxsfb_dispdrv_init() will fail which in turn causes framebuffer
dirver probe fails. Add the defer probe schema for second probe later to fix it.

Signed-off-by: Oliver Brown <oliver.brown@nxp.com>
Signed-off-by: Robby Cai <robby.cai@nxp.com>
Reviewed-by: Fancy Fang <chen.fang@nxp.com>
This commit is contained in:
Oliver Brown
2017-08-04 14:31:35 +08:00
committed by Leonard Crestez
parent 63c9eca2f7
commit f7b48681ec
1 changed files with 3 additions and 8 deletions
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11
drivers/video/fbdev/mxsfb.c
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@ -1493,14 +1493,9 @@ static int mxsfb_dispdrv_init(struct platform_device *pdev,
kfree(setting.dft_mode_str);
if (IS_ERR(host->dispdrv)) {
if (PTR_ERR(host->dispdrv) == -EPROBE_DEFER)
return PTR_ERR(host->dispdrv);
host->dispdrv = NULL;
dev_info(dev, "failed to find mxc display driver %s\n",
disp_dev);
} else
if (IS_ERR(host->dispdrv))
return -EPROBE_DEFER;
else
dev_info(dev, "registered mxc display driver %s\n",
disp_dev);