SND_SOF_FW_SIG_SIZE 74 include/uapi/sound/sof/fw.h unsigned char sig[SND_SOF_FW_SIG_SIZE]; /* "Reef" */ SND_SOF_FW_SIG_SIZE 353 sound/soc/sof/loader.c if (strncmp(header->sig, SND_SOF_FW_SIG, SND_SOF_FW_SIG_SIZE) != 0) {