r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000040)='/sys/power/sync_on_suspend', 0x0, 0x0)
preadv(r0, &(0x7f0000000180)=[{&(0x7f0000000140)=""/55, 0x37}], 0x1, 0x1, 0x0)