Hello Takashi Iwai,
The patch da8648097497: "ALSA: x86: Flatten two abstraction layers" from Jan 31, 2017, leads to the following static checker warning:
sound/x86/intel_hdmi_audio.c:1702 hdmi_lpe_audio_probe() error: strcpy() '"IntelHdmiLpeAudio"' too large for 'card->driver' (18 vs 16)
sound/x86/intel_hdmi_audio.c 1695 ctx = card->private_data; 1696 spin_lock_init(&ctx->had_spinlock); 1697 mutex_init(&ctx->mutex); 1698 ctx->connected = false; 1699 ctx->dev = &pdev->dev; 1700 ctx->card = card; 1701 ctx->aes_bits = SNDRV_PCM_DEFAULT_CON_SPDIF; 1702 strcpy(card->driver, INTEL_HAD); ^^^^^^^^^ Too long. We're corrupting memory. The old code was equally bad, but the renaming the function made it show up as a new warning...
1703 strcpy(card->shortname, INTEL_HAD); 1704
regards, dan carpenter