From patchwork Thu Apr 13 14:22:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Zhandarovich X-Patchwork-Id: 13210335 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0A5D3C77B71 for ; Thu, 13 Apr 2023 14:23:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229962AbjDMOXD (ORCPT ); Thu, 13 Apr 2023 10:23:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53890 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229910AbjDMOXC (ORCPT ); Thu, 13 Apr 2023 10:23:02 -0400 Received: from exchange.fintech.ru (e10edge.fintech.ru [195.54.195.159]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D0800F3; Thu, 13 Apr 2023 07:22:58 -0700 (PDT) Received: from Ex16-01.fintech.ru (10.0.10.18) by exchange.fintech.ru (195.54.195.159) with Microsoft SMTP Server (TLS) id 14.3.498.0; Thu, 13 Apr 2023 17:22:55 +0300 Received: from localhost (10.0.253.138) by Ex16-01.fintech.ru (10.0.10.18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2242.4; Thu, 13 Apr 2023 17:22:55 +0300 From: Nikita Zhandarovich To: David Airlie CC: Nikita Zhandarovich , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , Chun-Kuang Hu , Philipp Zabel , "Matthias Brugger" , AngeloGioacchino Del Regno , Helge Deller , , , , , , , , , Subject: [PATCH v2] video/hdmi: minor fixes for *_infoframe_init functions Date: Thu, 13 Apr 2023 07:22:38 -0700 Message-ID: <20230413142238.19011-1-n.zhandarovich@fintech.ru> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.0.253.138] X-ClientProxiedBy: Ex16-02.fintech.ru (10.0.10.19) To Ex16-01.fintech.ru (10.0.10.18) Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Multiple hdmi_*_infoframe_init() functions that initialize different types of hdmi infoframes only return default 0 value (contrary to their descriptions). Yet these functions are still checked against possible errors in case of failure. This patch removes redundant checks for errors in calls to following functions: - hdmi_spd_infoframe_init - hdmi_audio_infoframe_init - hdmi_vendor_infoframe_init - hdmi_drm_infoframe_init Also, change their return types to void and fix descriptions. Fixes: 2c676f378edb ("[media] hdmi: added unpack and logging functions for InfoFrames") Signed-off-by: Nikita Zhandarovich --- v2: Fix build warning by removing unnecessary call to drm_WARN_ON() with uninitialized value. Reported-by: kernel test robot Link: https://lore.kernel.org/oe-kbuild-all/202304131234.hT3mzkju-lkp@intel.com/ drivers/gpu/drm/display/drm_hdmi_helper.c | 5 +--- drivers/gpu/drm/drm_edid.c | 5 +--- drivers/gpu/drm/i915/display/intel_hdmi.c | 4 +-- drivers/gpu/drm/mediatek/mtk_hdmi.c | 14 ++-------- drivers/gpu/drm/radeon/r600_hdmi.c drivers/gpu/drm/display/drm_hdmi_helper.c | 5 +--- drivers/gpu/drm/drm_edid.c | 5 +--- drivers/gpu/drm/i915/display/intel_hdmi.c | 7 ++--- drivers/gpu/drm/mediatek/mtk_hdmi.c | 14 ++-------- drivers/gpu/drm/radeon/r600_hdmi.c | 6 +---- drivers/gpu/drm/sti/sti_hdmi.c | 6 +---- drivers/gpu/drm/tegra/hdmi.c | 7 +---- drivers/gpu/drm/tegra/sor.c | 6 +---- drivers/gpu/drm/vc4/vc4_hdmi.c | 7 +---- drivers/video/hdmi.c | 44 ++++++------------------------- include/linux/hdmi.h | 8 +++--- 11 files changed, 23 insertions(+), 92 deletions(-) diff --git a/drivers/gpu/drm/display/drm_hdmi_helper.c b/drivers/gpu/drm/display/drm_hdmi_helper.c index faf5e9efa7d3..ce7038a3a183 100644 --- a/drivers/gpu/drm/display/drm_hdmi_helper.c +++ b/drivers/gpu/drm/display/drm_hdmi_helper.c @@ -27,7 +27,6 @@ int drm_hdmi_infoframe_set_hdr_metadata(struct hdmi_drm_infoframe *frame, { struct drm_connector *connector; struct hdr_output_metadata *hdr_metadata; - int err; if (!frame || !conn_state) return -EINVAL; @@ -47,9 +46,7 @@ int drm_hdmi_infoframe_set_hdr_metadata(struct hdmi_drm_infoframe *frame, connector->hdr_sink_metadata.hdmi_type1.eotf)) DRM_DEBUG_KMS("Unknown EOTF %d\n", hdr_metadata->hdmi_metadata_type1.eotf); - err = hdmi_drm_infoframe_init(frame); - if (err < 0) - return err; + hdmi_drm_infoframe_init(frame); frame->eotf = hdr_metadata->hdmi_metadata_type1.eotf; frame->metadata_type = hdr_metadata->hdmi_metadata_type1.metadata_type; diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 261a62e15934..c268148502d6 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -7159,7 +7159,6 @@ drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame, */ bool has_hdmi_infoframe = connector ? connector->display_info.has_hdmi_infoframe : false; - int err; if (!frame || !mode) return -EINVAL; @@ -7167,9 +7166,7 @@ drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame, if (!has_hdmi_infoframe) return -EINVAL; - err = hdmi_vendor_infoframe_init(frame); - if (err < 0) - return err; + hdmi_vendor_infoframe_init(frame); /* * Even if it's not absolutely necessary to send the infoframe diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c index c0ce6d3dc505..59e2f53015c0 100644 --- a/drivers/gpu/drm/i915/display/intel_hdmi.c +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c @@ -778,12 +778,9 @@ intel_hdmi_compute_spd_infoframe(struct intel_encoder *encoder, intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_SPD); if (IS_DGFX(i915)) - ret = hdmi_spd_infoframe_init(frame, "Intel", "Discrete gfx"); + hdmi_spd_infoframe_init(frame, "Intel", "Discrete gfx"); else - ret = hdmi_spd_infoframe_init(frame, "Intel", "Integrated gfx"); - - if (drm_WARN_ON(encoder->base.dev, ret)) - return false; + hdmi_spd_infoframe_init(frame, "Intel", "Integrated gfx"); frame->sdi = HDMI_SPD_SDI_PC; diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index 0a8e0a13f516..75899e4a011f 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -995,12 +995,7 @@ static int mtk_hdmi_setup_spd_infoframe(struct mtk_hdmi *hdmi, u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_SPD_INFOFRAME_SIZE]; ssize_t err; - err = hdmi_spd_infoframe_init(&frame, vendor, product); - if (err < 0) { - dev_err(hdmi->dev, "Failed to initialize SPD infoframe: %zd\n", - err); - return err; - } + hdmi_spd_infoframe_init(&frame, vendor, product); err = hdmi_spd_infoframe_pack(&frame, buffer, sizeof(buffer)); if (err < 0) { @@ -1018,12 +1013,7 @@ static int mtk_hdmi_setup_audio_infoframe(struct mtk_hdmi *hdmi) u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE]; ssize_t err; - err = hdmi_audio_infoframe_init(&frame); - if (err < 0) { - dev_err(hdmi->dev, "Failed to setup audio infoframe: %zd\n", - err); - return err; - } + hdmi_audio_infoframe_init(&frame); frame.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM; frame.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM; diff --git a/drivers/gpu/drm/radeon/r600_hdmi.c b/drivers/gpu/drm/radeon/r600_hdmi.c index f3551ebaa2f0..b690254562e8 100644 --- a/drivers/gpu/drm/radeon/r600_hdmi.c +++ b/drivers/gpu/drm/radeon/r600_hdmi.c @@ -432,11 +432,7 @@ void r600_hdmi_update_audio_settings(struct drm_encoder *encoder) DRM_DEBUG("0x%02X IEC60958 status bits and 0x%02X category code\n", (int)audio.status_bits, (int)audio.category_code); - err = hdmi_audio_infoframe_init(&frame); - if (err < 0) { - DRM_ERROR("failed to setup audio infoframe\n"); - return; - } + hdmi_audio_infoframe_init(&frame); frame.channels = audio.channels; diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c index 8539fe1fedc4..1f92db1fb960 100644 --- a/drivers/gpu/drm/sti/sti_hdmi.c +++ b/drivers/gpu/drm/sti/sti_hdmi.c @@ -1321,11 +1321,7 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data) } /* Initialize audio infoframe */ - err = hdmi_audio_infoframe_init(&hdmi->audio.cea); - if (err) { - DRM_ERROR("Failed to init audio infoframe\n"); - goto err_sysfs; - } + hdmi_audio_infoframe_init(&hdmi->audio.cea); cec_fill_conn_info_from_drm(&conn_info, drm_connector); hdmi->notifier = cec_notifier_conn_register(&hdmi->dev, NULL, diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c index 40ec3e6cf204..fe8fcd1b056b 100644 --- a/drivers/gpu/drm/tegra/hdmi.c +++ b/drivers/gpu/drm/tegra/hdmi.c @@ -747,12 +747,7 @@ static void tegra_hdmi_setup_audio_infoframe(struct tegra_hdmi *hdmi) u8 buffer[14]; ssize_t err; - err = hdmi_audio_infoframe_init(&frame); - if (err < 0) { - dev_err(hdmi->dev, "failed to setup audio infoframe: %zd\n", - err); - return; - } + hdmi_audio_infoframe_init(&frame); frame.channels = hdmi->format.channels; diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c index 8af632740673..d8cd93d5af10 100644 --- a/drivers/gpu/drm/tegra/sor.c +++ b/drivers/gpu/drm/tegra/sor.c @@ -2021,11 +2021,7 @@ static int tegra_sor_hdmi_enable_audio_infoframe(struct tegra_sor *sor) u32 value; int err; - err = hdmi_audio_infoframe_init(&frame); - if (err < 0) { - dev_err(sor->dev, "failed to setup audio infoframe: %d\n", err); - return err; - } + hdmi_audio_infoframe_init(&frame); frame.channels = sor->format.channels; diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index ea22c9bf223a..d7de86b41901 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -816,13 +816,8 @@ static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder) static void vc4_hdmi_set_spd_infoframe(struct drm_encoder *encoder) { union hdmi_infoframe frame; - int ret; - ret = hdmi_spd_infoframe_init(&frame.spd, "Broadcom", "Videocore"); - if (ret < 0) { - DRM_ERROR("couldn't fill SPD infoframe\n"); - return; - } + hdmi_spd_infoframe_init(&frame.spd, "Broadcom", "Videocore"); frame.spd.sdi = HDMI_SPD_SDI_PC; diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c index 03c7f27dde49..a4a1359415a0 100644 --- a/drivers/video/hdmi.c +++ b/drivers/video/hdmi.c @@ -216,10 +216,8 @@ EXPORT_SYMBOL(hdmi_avi_infoframe_pack); * @frame: HDMI SPD infoframe * @vendor: vendor string * @product: product string - * - * Returns 0 on success or a negative error code on failure. */ -int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame, +void hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame, const char *vendor, const char *product) { size_t len; @@ -234,8 +232,6 @@ int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame, memcpy(frame->vendor, vendor, min(len, sizeof(frame->vendor))); len = strlen(product); memcpy(frame->product, product, min(len, sizeof(frame->product))); - - return 0; } EXPORT_SYMBOL(hdmi_spd_infoframe_init); @@ -348,18 +344,14 @@ EXPORT_SYMBOL(hdmi_spd_infoframe_pack); /** * hdmi_audio_infoframe_init() - initialize an HDMI audio infoframe * @frame: HDMI audio infoframe - * - * Returns 0 on success or a negative error code on failure. */ -int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame) +void hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame) { memset(frame, 0, sizeof(*frame)); frame->type = HDMI_INFOFRAME_TYPE_AUDIO; frame->version = 1; frame->length = HDMI_AUDIO_INFOFRAME_SIZE; - - return 0; } EXPORT_SYMBOL(hdmi_audio_infoframe_init); @@ -526,10 +518,8 @@ EXPORT_SYMBOL(hdmi_audio_infoframe_pack_for_dp); /** * hdmi_vendor_infoframe_init() - initialize an HDMI vendor infoframe * @frame: HDMI vendor infoframe - * - * Returns 0 on success or a negative error code on failure. */ -int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame) +void hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame) { memset(frame, 0, sizeof(*frame)); @@ -544,8 +534,6 @@ int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame) */ frame->s3d_struct = HDMI_3D_STRUCTURE_INVALID; frame->length = HDMI_VENDOR_INFOFRAME_SIZE; - - return 0; } EXPORT_SYMBOL(hdmi_vendor_infoframe_init); @@ -698,18 +686,14 @@ hdmi_vendor_any_infoframe_check_only(const union hdmi_vendor_any_infoframe *fram * hdmi_drm_infoframe_init() - initialize an HDMI Dynaminc Range and * mastering infoframe * @frame: HDMI DRM infoframe - * - * Returns 0 on success or a negative error code on failure. */ -int hdmi_drm_infoframe_init(struct hdmi_drm_infoframe *frame) +void hdmi_drm_infoframe_init(struct hdmi_drm_infoframe *frame) { memset(frame, 0, sizeof(*frame)); frame->type = HDMI_INFOFRAME_TYPE_DRM; frame->version = 1; frame->length = HDMI_DRM_INFOFRAME_SIZE; - - return 0; } EXPORT_SYMBOL(hdmi_drm_infoframe_init); @@ -1661,7 +1645,6 @@ static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame, const void *buffer, size_t size) { const u8 *ptr = buffer; - int ret; if (size < HDMI_INFOFRAME_SIZE(SPD)) return -EINVAL; @@ -1677,9 +1660,7 @@ static int hdmi_spd_infoframe_unpack(struct hdmi_spd_infoframe *frame, ptr += HDMI_INFOFRAME_HEADER_SIZE; - ret = hdmi_spd_infoframe_init(frame, ptr, ptr + 8); - if (ret) - return ret; + hdmi_spd_infoframe_init(frame, ptr, ptr + 8); frame->sdi = ptr[24]; @@ -1703,7 +1684,6 @@ static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame, const void *buffer, size_t size) { const u8 *ptr = buffer; - int ret; if (size < HDMI_INFOFRAME_SIZE(AUDIO)) return -EINVAL; @@ -1717,9 +1697,7 @@ static int hdmi_audio_infoframe_unpack(struct hdmi_audio_infoframe *frame, if (hdmi_infoframe_checksum(buffer, HDMI_INFOFRAME_SIZE(AUDIO)) != 0) return -EINVAL; - ret = hdmi_audio_infoframe_init(frame); - if (ret) - return ret; + hdmi_audio_infoframe_init(frame); ptr += HDMI_INFOFRAME_HEADER_SIZE; @@ -1755,7 +1733,6 @@ hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame, { const u8 *ptr = buffer; size_t length; - int ret; u8 hdmi_video_format; struct hdmi_vendor_infoframe *hvf = &frame->hdmi; @@ -1789,9 +1766,7 @@ hdmi_vendor_any_infoframe_unpack(union hdmi_vendor_any_infoframe *frame, if (hdmi_video_format > 0x2) return -EINVAL; - ret = hdmi_vendor_infoframe_init(hvf); - if (ret) - return ret; + hdmi_vendor_infoframe_init(hvf); hvf->length = length; @@ -1837,15 +1812,12 @@ int hdmi_drm_infoframe_unpack_only(struct hdmi_drm_infoframe *frame, const u8 *temp; u8 x_lsb, x_msb; u8 y_lsb, y_msb; - int ret; int i; if (size < HDMI_DRM_INFOFRAME_SIZE) return -EINVAL; - ret = hdmi_drm_infoframe_init(frame); - if (ret) - return ret; + hdmi_drm_infoframe_init(frame); frame->eotf = ptr[0] & 0x7; frame->metadata_type = ptr[1] & 0x7; diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h index 2f4dcc8d060e..e60a28d181f2 100644 --- a/include/linux/hdmi.h +++ b/include/linux/hdmi.h @@ -214,7 +214,7 @@ ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer, ssize_t hdmi_avi_infoframe_pack_only(const struct hdmi_avi_infoframe *frame, void *buffer, size_t size); int hdmi_avi_infoframe_check(struct hdmi_avi_infoframe *frame); -int hdmi_drm_infoframe_init(struct hdmi_drm_infoframe *frame); +void hdmi_drm_infoframe_init(struct hdmi_drm_infoframe *frame); ssize_t hdmi_drm_infoframe_pack(struct hdmi_drm_infoframe *frame, void *buffer, size_t size); ssize_t hdmi_drm_infoframe_pack_only(const struct hdmi_drm_infoframe *frame, @@ -249,7 +249,7 @@ struct hdmi_spd_infoframe { enum hdmi_spd_sdi sdi; }; -int hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame, +void hdmi_spd_infoframe_init(struct hdmi_spd_infoframe *frame, const char *vendor, const char *product); ssize_t hdmi_spd_infoframe_pack(struct hdmi_spd_infoframe *frame, void *buffer, size_t size); @@ -331,7 +331,7 @@ struct hdmi_audio_infoframe { }; -int hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame); +void hdmi_audio_infoframe_init(struct hdmi_audio_infoframe *frame); ssize_t hdmi_audio_infoframe_pack(struct hdmi_audio_infoframe *frame, void *buffer, size_t size); ssize_t hdmi_audio_infoframe_pack_only(const struct hdmi_audio_infoframe *frame, @@ -393,7 +393,7 @@ struct hdr_sink_metadata { }; }; -int hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame); +void hdmi_vendor_infoframe_init(struct hdmi_vendor_infoframe *frame); ssize_t hdmi_vendor_infoframe_pack(struct hdmi_vendor_infoframe *frame, void *buffer, size_t size); ssize_t hdmi_vendor_infoframe_pack_only(const struct hdmi_vendor_infoframe *frame,