From f1c680f5ef7ad3211bf1ae5630bd6a8219534e3c Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 20 Feb 2018 14:30:10 +0200 Subject: [PATCH] ASoC: hdmi-codec: Fix module unloading caused kernel crash The hcp->chmap_info must not be freed up in the hdmi_codec_remove() function as it leads to kernel crash due ALSA core's pcm_chmap_ctl_private_free() is trying to free it up again when the card destroyed via snd_card_free. Since the driver was converted to devm_snd_soc_register_component() the whole platform_device.remove can be removed. Commit cd6111b26280a ("ASoC: hdmi-codec: add channel mapping control") should not have added the kfree(hcp->chmap_info); to the hdmi_codec_remove function. [Separate verison of the fix for -next -- broonie] Signed-off-by: Peter Ujfalusi Signed-off-by: Mark Brown --- sound/soc/codecs/hdmi-codec.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c index 42df579cb507..6fa11888672d 100644 --- a/sound/soc/codecs/hdmi-codec.c +++ b/sound/soc/codecs/hdmi-codec.c @@ -798,23 +798,11 @@ static int hdmi_codec_probe(struct platform_device *pdev) return 0; } -static int hdmi_codec_remove(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct hdmi_codec_priv *hcp; - - hcp = dev_get_drvdata(dev); - kfree(hcp->chmap_info); - - return 0; -} - static struct platform_driver hdmi_codec_driver = { .driver = { .name = HDMI_CODEC_DRV_NAME, }, .probe = hdmi_codec_probe, - .remove = hdmi_codec_remove, }; module_platform_driver(hdmi_codec_driver); -- 2.45.2