From 3f649ab728cda8038259d8f14492fe400fbab911 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 3 Jun 2020 13:09:38 -0700 Subject: treewide: Remove uninitialized_var() usage Using uninitialized_var() is dangerous as it papers over real bugs[1] (or can in the future), and suppresses unrelated compiler warnings (e.g. "unused variable"). If the compiler thinks it is uninitialized, either simply initialize the variable or make compiler changes. In preparation for removing[2] the[3] macro[4], remove all remaining needless uses with the following script: git grep '\buninitialized_var\b' | cut -d: -f1 | sort -u | \ xargs perl -pi -e \ 's/\buninitialized_var\(([^\)]+)\)/\1/g; s:\s*/\* (GCC be quiet|to make compiler happy) \*/$::g;' drivers/video/fbdev/riva/riva_hw.c was manually tweaked to avoid pathological white-space. No outstanding warnings were found building allmodconfig with GCC 9.3.0 for x86_64, i386, arm64, arm, powerpc, powerpc64le, s390x, mips, sparc64, alpha, and m68k. [1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/ [2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/ [3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/ [4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/ Reviewed-by: Leon Romanovsky # drivers/infiniband and mlx4/mlx5 Acked-by: Jason Gunthorpe # IB Acked-by: Kalle Valo # wireless drivers Reviewed-by: Chao Yu # erofs Signed-off-by: Kees Cook --- drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/rockchip') diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c index 3feff0c45b3f..542dcf7eddd6 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c @@ -517,8 +517,8 @@ dw_mipi_dsi_get_lane_mbps(void *priv_data, const struct drm_display_mode *mode, unsigned long best_freq = 0; unsigned long fvco_min, fvco_max, fin, fout; unsigned int min_prediv, max_prediv; - unsigned int _prediv, uninitialized_var(best_prediv); - unsigned long _fbdiv, uninitialized_var(best_fbdiv); + unsigned int _prediv, best_prediv; + unsigned long _fbdiv, best_fbdiv; unsigned long min_delta = ULONG_MAX; dsi->format = format; -- cgit v1.2.3 From d789710fb248df0c2279a785c7b9beb313629c0a Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 9 Jul 2020 10:55:45 +0900 Subject: ASoC: hdmi-codec: merge .digital_mute() into .mute_stream() snd_soc_dai_digital_mute() is internally using both mute_stream() (1) or digital_mute() (2), but the difference between these 2 are only handling direction. We can merge digital_mute() into mute_stream int snd_soc_dai_digital_mute(xxx, int direction) { ... else if (dai->driver->ops->mute_stream) (1) return dai->driver->ops->mute_stream(xxx, direction); else if (direction == SNDRV_PCM_STREAM_PLAYBACK && dai->driver->ops->digital_mute) (2) return dai->driver->ops->digital_mute(xxx); ... } For hdmi-codec, we need to update struct hdmi_codec_ops, and all its users in the same time. Signed-off-by: Kuninori Morimoto Reviewed-by: Peter Ujfalusi Link: https://lore.kernel.org/r/87d055xxj2.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown --- drivers/gpu/drm/bridge/sii902x.c | 7 ++++--- drivers/gpu/drm/exynos/exynos_hdmi.c | 6 ++++-- drivers/gpu/drm/i2c/tda998x_drv.c | 7 ++++--- drivers/gpu/drm/mediatek/mtk_hdmi.c | 6 ++++-- drivers/gpu/drm/rockchip/cdn-dp-core.c | 7 ++++--- drivers/gpu/drm/sti/sti_hdmi.c | 6 ++++-- drivers/gpu/drm/zte/zx_hdmi.c | 7 ++++--- include/sound/hdmi-codec.h | 6 +++++- sound/soc/codecs/hdmi-codec.c | 21 +++++++++++++++------ 9 files changed, 48 insertions(+), 25 deletions(-) (limited to 'drivers/gpu/drm/rockchip') diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c index 6dad025f8da7..c751baf3d064 100644 --- a/drivers/gpu/drm/bridge/sii902x.c +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -672,8 +672,8 @@ static void sii902x_audio_shutdown(struct device *dev, void *data) clk_disable_unprepare(sii902x->audio.mclk); } -static int sii902x_audio_digital_mute(struct device *dev, - void *data, bool enable) +static int sii902x_audio_mute(struct device *dev, void *data, + bool enable, int direction) { struct sii902x *sii902x = dev_get_drvdata(dev); @@ -724,9 +724,10 @@ static int sii902x_audio_get_dai_id(struct snd_soc_component *component, static const struct hdmi_codec_ops sii902x_audio_codec_ops = { .hw_params = sii902x_audio_hw_params, .audio_shutdown = sii902x_audio_shutdown, - .digital_mute = sii902x_audio_digital_mute, + .mute_stream = sii902x_audio_mute, .get_eld = sii902x_audio_get_eld, .get_dai_id = sii902x_audio_get_dai_id, + .no_capture_mute = 1, }; static int sii902x_audio_codec_init(struct sii902x *sii902x, diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 95dd399aa9cc..68d7b1ce1b7c 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -1604,7 +1604,8 @@ static int hdmi_audio_hw_params(struct device *dev, void *data, return 0; } -static int hdmi_audio_digital_mute(struct device *dev, void *data, bool mute) +static int hdmi_audio_mute(struct device *dev, void *data, + bool mute, int direction) { struct hdmi_context *hdata = dev_get_drvdata(dev); @@ -1634,8 +1635,9 @@ static int hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, static const struct hdmi_codec_ops audio_codec_ops = { .hw_params = hdmi_audio_hw_params, .audio_shutdown = hdmi_audio_shutdown, - .digital_mute = hdmi_audio_digital_mute, + .mute_stream = hdmi_audio_mute, .get_eld = hdmi_audio_get_eld, + .no_capture_mute = 1, }; static int hdmi_register_audio_device(struct hdmi_context *hdata) diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c index 9517f522dcb9..3010a4536da3 100644 --- a/drivers/gpu/drm/i2c/tda998x_drv.c +++ b/drivers/gpu/drm/i2c/tda998x_drv.c @@ -1133,8 +1133,8 @@ static void tda998x_audio_shutdown(struct device *dev, void *data) mutex_unlock(&priv->audio_mutex); } -static int tda998x_audio_digital_mute(struct device *dev, void *data, - bool enable) +static int tda998x_audio_mute_stream(struct device *dev, void *data, + bool enable, int direction) { struct tda998x_priv *priv = dev_get_drvdata(dev); @@ -1162,8 +1162,9 @@ static int tda998x_audio_get_eld(struct device *dev, void *data, static const struct hdmi_codec_ops audio_codec_ops = { .hw_params = tda998x_audio_hw_params, .audio_shutdown = tda998x_audio_shutdown, - .digital_mute = tda998x_audio_digital_mute, + .mute_stream = tda998x_audio_mute_stream, .get_eld = tda998x_audio_get_eld, + .no_capture_mute = 1, }; static int tda998x_audio_codec_init(struct tda998x_priv *priv, diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index 5feb760617cb..37b4420a0b22 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -1647,7 +1647,8 @@ static void mtk_hdmi_audio_shutdown(struct device *dev, void *data) } static int -mtk_hdmi_audio_digital_mute(struct device *dev, void *data, bool enable) +mtk_hdmi_audio_mute(struct device *dev, void *data, + bool enable, int direction) { struct mtk_hdmi *hdmi = dev_get_drvdata(dev); @@ -1692,9 +1693,10 @@ static const struct hdmi_codec_ops mtk_hdmi_audio_codec_ops = { .hw_params = mtk_hdmi_audio_hw_params, .audio_startup = mtk_hdmi_audio_startup, .audio_shutdown = mtk_hdmi_audio_shutdown, - .digital_mute = mtk_hdmi_audio_digital_mute, + .mute_stream = mtk_hdmi_audio_mute, .get_eld = mtk_hdmi_audio_get_eld, .hook_plugged_cb = mtk_hdmi_audio_hook_plugged_cb, + .no_capture_mute = 1, }; static int mtk_hdmi_register_audio_driver(struct device *dev) diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c index c634b95b50f7..a4a45daf93f2 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -817,8 +817,8 @@ out: mutex_unlock(&dp->lock); } -static int cdn_dp_audio_digital_mute(struct device *dev, void *data, - bool enable) +static int cdn_dp_audio_mute_stream(struct device *dev, void *data, + bool enable, int direction) { struct cdn_dp_device *dp = dev_get_drvdata(dev); int ret; @@ -849,8 +849,9 @@ static int cdn_dp_audio_get_eld(struct device *dev, void *data, static const struct hdmi_codec_ops audio_codec_ops = { .hw_params = cdn_dp_audio_hw_params, .audio_shutdown = cdn_dp_audio_shutdown, - .digital_mute = cdn_dp_audio_digital_mute, + .mute_stream = cdn_dp_audio_mute_stream, .get_eld = cdn_dp_audio_get_eld, + .no_capture_mute = 1, }; static int cdn_dp_audio_codec_init(struct cdn_dp_device *dp, diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c index 5b15c4974e6b..008f07923bbc 100644 --- a/drivers/gpu/drm/sti/sti_hdmi.c +++ b/drivers/gpu/drm/sti/sti_hdmi.c @@ -1191,7 +1191,8 @@ static int hdmi_audio_hw_params(struct device *dev, return 0; } -static int hdmi_audio_digital_mute(struct device *dev, void *data, bool enable) +static int hdmi_audio_mute(struct device *dev, void *data, + bool enable, int direction) { struct sti_hdmi *hdmi = dev_get_drvdata(dev); @@ -1219,8 +1220,9 @@ static int hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size static const struct hdmi_codec_ops audio_codec_ops = { .hw_params = hdmi_audio_hw_params, .audio_shutdown = hdmi_audio_shutdown, - .digital_mute = hdmi_audio_digital_mute, + .mute_stream = hdmi_audio_mute, .get_eld = hdmi_audio_get_eld, + .no_capture_mute = 1, }; static int sti_hdmi_register_audio_driver(struct device *dev, diff --git a/drivers/gpu/drm/zte/zx_hdmi.c b/drivers/gpu/drm/zte/zx_hdmi.c index 76a16d997a23..cd79ca0a92a9 100644 --- a/drivers/gpu/drm/zte/zx_hdmi.c +++ b/drivers/gpu/drm/zte/zx_hdmi.c @@ -439,8 +439,8 @@ static int zx_hdmi_audio_hw_params(struct device *dev, return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_AUDIO); } -static int zx_hdmi_audio_digital_mute(struct device *dev, void *data, - bool enable) +static int zx_hdmi_audio_mute(struct device *dev, void *data, + bool enable, int direction) { struct zx_hdmi *hdmi = dev_get_drvdata(dev); @@ -468,8 +468,9 @@ static const struct hdmi_codec_ops zx_hdmi_codec_ops = { .audio_startup = zx_hdmi_audio_startup, .hw_params = zx_hdmi_audio_hw_params, .audio_shutdown = zx_hdmi_audio_shutdown, - .digital_mute = zx_hdmi_audio_digital_mute, + .mute_stream = zx_hdmi_audio_mute, .get_eld = zx_hdmi_audio_get_eld, + .no_capture_mute = 1, }; static struct hdmi_codec_pdata zx_hdmi_codec_pdata = { diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h index 83b17682e01c..17eebd34835a 100644 --- a/include/sound/hdmi-codec.h +++ b/include/sound/hdmi-codec.h @@ -76,7 +76,8 @@ struct hdmi_codec_ops { * Mute/unmute HDMI audio stream. * Optional */ - int (*digital_mute)(struct device *dev, void *data, bool enable); + int (*mute_stream)(struct device *dev, void *data, + bool enable, int direction); /* * Provides EDID-Like-Data from connected HDMI device. @@ -99,6 +100,9 @@ struct hdmi_codec_ops { int (*hook_plugged_cb)(struct device *dev, void *data, hdmi_codec_plugged_cb fn, struct device *codec_dev); + + /* bit field */ + unsigned int no_capture_mute:1; }; /* HDMI codec initalization data */ diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c index 926ab447a96b..bc760a81e217 100644 --- a/sound/soc/codecs/hdmi-codec.c +++ b/sound/soc/codecs/hdmi-codec.c @@ -558,13 +558,22 @@ static int hdmi_codec_i2s_set_fmt(struct snd_soc_dai *dai, return 0; } -static int hdmi_codec_digital_mute(struct snd_soc_dai *dai, int mute) +static int hdmi_codec_mute(struct snd_soc_dai *dai, int mute, int direction) { struct hdmi_codec_priv *hcp = snd_soc_dai_get_drvdata(dai); - if (hcp->hcd.ops->digital_mute) - return hcp->hcd.ops->digital_mute(dai->dev->parent, - hcp->hcd.data, mute); + /* + * ignore if direction was CAPTURE + * and it had .no_capture_mute flag + * see + * snd_soc_dai_digital_mute() + */ + if (hcp->hcd.ops->mute_stream && + (direction == SNDRV_PCM_STREAM_PLAYBACK || + !hcp->hcd.ops->no_capture_mute)) + return hcp->hcd.ops->mute_stream(dai->dev->parent, + hcp->hcd.data, + mute, direction); return -ENOTSUPP; } @@ -574,14 +583,14 @@ static const struct snd_soc_dai_ops hdmi_codec_i2s_dai_ops = { .shutdown = hdmi_codec_shutdown, .hw_params = hdmi_codec_hw_params, .set_fmt = hdmi_codec_i2s_set_fmt, - .digital_mute = hdmi_codec_digital_mute, + .mute_stream = hdmi_codec_mute, }; static const struct snd_soc_dai_ops hdmi_codec_spdif_dai_ops = { .startup = hdmi_codec_startup, .shutdown = hdmi_codec_shutdown, .hw_params = hdmi_codec_hw_params, - .digital_mute = hdmi_codec_digital_mute, + .mute_stream = hdmi_codec_mute, }; #define HDMI_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ -- cgit v1.2.3