A hack to forcefully release the leaked sunxi disp layers.

release-sunxi-disp-layers.c

#include <stdint.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/fb.h>

#define DISP_CMD_LAYER_RELEASE 0x41

int fd;

int layer_release(int layer_id)
{
    uint32_t tmp4[4];
    tmp4[0] = 0;
    tmp4[1] = layer_id;
    return ioctl(fd, DISP_CMD_LAYER_RELEASE, &tmp4);
}

int main()
{
    int id;
    fd = open("/dev/disp", O_RDWR);
    for (id = 101; id < 104; id++)
        layer_release(id);
    return 0;
}