r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000040)='/sys/power/sync_on_suspend', 0x0, 0x0)
preadv(r0, &(0x7f0000000400)=[{&(0x7f0000000900)=""/4096, 0x105c}], 0x1, 0x0, 0x0)