6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx> [ Upstream commit 3fc6c76a8d208d3955c9e64b382d0ff370bc61fc ] The driver never unregisters the audio codec platform device, which can lead to a crash on module reloading, nor does it handle the return value from sii902x_audio_codec_init(). Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx> Fixes: ff5781634c41 ("drm/bridge: sii902x: Implement HDMI audio support") Cc: Jyri Sarha <jsarha@xxxxxx> Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Link: https://lore.kernel.org/r/20240103-si902x-fixes-v1-2-b9fd3e448411@xxxxxxxxxxxxxxxx Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20240103-si902x-fixes-v1-2-b9fd3e448411@xxxxxxxxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/bridge/sii902x.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c index f648d686eb37..6359d6f53a1b 100644 --- a/drivers/gpu/drm/bridge/sii902x.c +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -1040,7 +1040,9 @@ static int sii902x_init(struct sii902x *sii902x) return ret; } - sii902x_audio_codec_init(sii902x, dev); + ret = sii902x_audio_codec_init(sii902x, dev); + if (ret) + return ret; i2c_set_clientdata(sii902x->i2c, sii902x); @@ -1048,13 +1050,15 @@ static int sii902x_init(struct sii902x *sii902x) 1, 0, I2C_MUX_GATE, sii902x_i2c_bypass_select, sii902x_i2c_bypass_deselect); - if (!sii902x->i2cmux) - return -ENOMEM; + if (!sii902x->i2cmux) { + ret = -ENOMEM; + goto err_unreg_audio; + } sii902x->i2cmux->priv = sii902x; ret = i2c_mux_add_adapter(sii902x->i2cmux, 0, 0, 0); if (ret) - return ret; + goto err_unreg_audio; sii902x->bridge.funcs = &sii902x_bridge_funcs; sii902x->bridge.of_node = dev->of_node; @@ -1067,6 +1071,12 @@ static int sii902x_init(struct sii902x *sii902x) drm_bridge_add(&sii902x->bridge); return 0; + +err_unreg_audio: + if (!PTR_ERR_OR_ZERO(sii902x->audio.pdev)) + platform_device_unregister(sii902x->audio.pdev); + + return ret; } static int sii902x_probe(struct i2c_client *client, @@ -1139,6 +1149,9 @@ static void sii902x_remove(struct i2c_client *client) drm_bridge_remove(&sii902x->bridge); i2c_mux_del_adapters(sii902x->i2cmux); + + if (!PTR_ERR_OR_ZERO(sii902x->audio.pdev)) + platform_device_unregister(sii902x->audio.pdev); } static const struct of_device_id sii902x_dt_ids[] = { -- 2.43.0