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video: fbdev: fbmem: fix pointer reference to null device field
In function do_remove_conflicting_framebuffers, if device is NULL, there will be null pointer reference. The patch add a check to the if expression. Signed-off-by: Zhouyi Zhou <zhouzhouyi@gmail.com> Acked-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Helge Deller <deller@gmx.de> Link: https://patchwork.freedesktop.org/patch/msgid/20220210065824.368355-1-zhouzhouyi@gmail.com
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@ -1579,7 +1579,7 @@ static void do_remove_conflicting_framebuffers(struct apertures_struct *a,
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* If it's not a platform device, at least print a warning. A
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* fix would add code to remove the device from the system.
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*/
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if (dev_is_platform(device)) {
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if (device && dev_is_platform(device)) {
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registered_fb[i]->forced_out = true;
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platform_device_unregister(to_platform_device(device));
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} else {
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