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video: clps711x-fb: release disp device node in probe()

Browse source 
clps711x_fb_probe() increments refcnt of disp device node by
of_parse_phandle() and leaves it undecremented on both
successful and error paths.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <[email protected]>
Cc: Alexander Shiyan <[email protected]>
Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
This commit is contained in:
Alexey Khoroshilov 2018-12-20 19:13:07 +01:00 • committed by Bartlomiej Zolnierkiewicz
commit fdac751355
1 changed files with 4 additions and 1 deletions
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5
drivers/video/fbdev/clps711x-fb.c
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@ -287,14 +287,17 @@ static int clps711x_fb_probe(struct platform_device *pdev)
}
ret = of_get_fb_videomode(disp, &cfb->mode, OF_USE_NATIVE_MODE);
if (ret)
if (ret) {
of_node_put(disp);
goto out_fb_release;
}
of_property_read_u32(disp, "ac-prescale", &cfb->ac_prescale);
cfb->cmap_invert = of_property_read_bool(disp, "cmap-invert");
ret = of_property_read_u32(disp, "bits-per-pixel",
&info->var.bits_per_pixel);
of_node_put(disp);
if (ret)
goto out_fb_release;