openwrt/jffs2_scan_eraseblock(): Magic bitmask

- regular preinit -
[   13.691504] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000000: 0x00c0 instead
[   13.710406] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00020000: 0x00c0 instead
[   13.729201] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00040000: 0x00c0 instead
[   13.747974] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00060000: 0x00c0 instead
[   13.766761] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00080000: 0x00c0 instead
[   13.785537] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x000a0000: 0x00c0 instead
[   13.804313] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x000c0000: 0x00c0 instead
[   13.823095] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x000e0000: 0x00c0 instead
[   13.841876] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00100000: 0x00c0 instead
[   13.860650] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00120000: 0x00c0 instead
[   13.879427] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00140000: 0x00c0 instead
[   13.898200] jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00160000: 0x00c0 instead