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Date: Thu, 27 Jun 2024 22:06:39 +0800
From: Chun-Kuang Hu <chunkuang.hu@...nel.org>
To: Nícolas F. R. A. Prado <nfraprado@...labora.com>
Cc: Chun-Kuang Hu <chunkuang.hu@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>,
David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, kernel@...labora.com,
dri-devel@...ts.freedesktop.org, linux-mediatek@...ts.infradead.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2] drm/mediatek: Log errors in probe with dev_err_probe()
Hi, Nicolas:
Nícolas F. R. A. Prado <nfraprado@...labora.com> 於 2024年6月7日 週五 上午7:52寫道：
>
> Use dev_err_probe() to log errors in the probe function of all drm
> mediatek drivers. This avoids -EPROBE_DEFER return values from being
> logged as errors, like the following:
>
> mediatek-disp-rdma 1c002000.rdma: Failed to add component: -517
>
> As a side benefit it also standardizes the format of the error in the
> log messages.
Applied to mediatek-drm-next [1], thanks.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/chunkuang.hu/linux.git/log/?h=mediatek-drm-next
>
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
> ---
> Changes in v2:
> - Converted all dev_err() in probe functions to dev_err_probe() instead
> of just the ones in the component_add() error path
> - Link to v1: https://lore.kernel.org/r/20240605-mtk-disp-rdma-dev-err-probe-v1-1-91259e1d3a93@collabora.com
> ---
> drivers/gpu/drm/mediatek/mtk_cec.c | 28 ++++++++--------------
> drivers/gpu/drm/mediatek/mtk_disp_aal.c | 18 +++++++-------
> drivers/gpu/drm/mediatek/mtk_disp_ccorr.c | 18 +++++++-------
> drivers/gpu/drm/mediatek/mtk_disp_color.c | 18 +++++++-------
> drivers/gpu/drm/mediatek/mtk_disp_gamma.c | 18 +++++++-------
> drivers/gpu/drm/mediatek/mtk_disp_merge.c | 25 +++++++++-----------
> drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 24 ++++++++-----------
> drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 4 ++--
> drivers/gpu/drm/mediatek/mtk_disp_rdma.c | 31 +++++++++++--------------
> drivers/gpu/drm/mediatek/mtk_dp.c | 8 +++----
> drivers/gpu/drm/mediatek/mtk_ethdr.c | 19 +++++++--------
> drivers/gpu/drm/mediatek/mtk_hdmi.c | 31 ++++++++++---------------
> drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c | 21 ++++++-----------
> drivers/gpu/drm/mediatek/mtk_mdp_rdma.c | 18 +++++++-------
> drivers/gpu/drm/mediatek/mtk_padding.c | 20 +++++++---------
> 15 files changed, 125 insertions(+), 176 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_cec.c b/drivers/gpu/drm/mediatek/mtk_cec.c
> index 8519e9bade36..2de248443147 100644
> --- a/drivers/gpu/drm/mediatek/mtk_cec.c
> +++ b/drivers/gpu/drm/mediatek/mtk_cec.c
> @@ -195,18 +195,14 @@ static int mtk_cec_probe(struct platform_device *pdev)
> spin_lock_init(&cec->lock);
>
> cec->regs = devm_platform_ioremap_resource(pdev, 0);
> - if (IS_ERR(cec->regs)) {
> - ret = PTR_ERR(cec->regs);
> - dev_err(dev, "Failed to ioremap cec: %d\n", ret);
> - return ret;
> - }
> + if (IS_ERR(cec->regs))
> + return dev_err_probe(dev, PTR_ERR(cec->regs),
> + "Failed to ioremap cec\n");
>
> cec->clk = devm_clk_get(dev, NULL);
> - if (IS_ERR(cec->clk)) {
> - ret = PTR_ERR(cec->clk);
> - dev_err(dev, "Failed to get cec clock: %d\n", ret);
> - return ret;
> - }
> + if (IS_ERR(cec->clk))
> + return dev_err_probe(dev, PTR_ERR(cec->clk),
> + "Failed to get cec clock\n");
>
> cec->irq = platform_get_irq(pdev, 0);
> if (cec->irq < 0)
> @@ -216,16 +212,12 @@ static int mtk_cec_probe(struct platform_device *pdev)
> mtk_cec_htplg_isr_thread,
> IRQF_SHARED | IRQF_TRIGGER_LOW |
> IRQF_ONESHOT, "hdmi hpd", dev);
> - if (ret) {
> - dev_err(dev, "Failed to register cec irq: %d\n", ret);
> - return ret;
> - }
> + if (ret)
> + return dev_err_probe(dev, ret, "Failed to register cec irq\n");
>
> ret = clk_prepare_enable(cec->clk);
> - if (ret) {
> - dev_err(dev, "Failed to enable cec clock: %d\n", ret);
> - return ret;
> - }
> + if (ret)
> + return dev_err_probe(dev, ret, "Failed to enable cec clock\n");
>
> mtk_cec_htplg_irq_init(cec);
> mtk_cec_htplg_irq_enable(cec);
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_aal.c b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
> index 3ce8f32b06d5..59fb9a08d54b 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_aal.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_aal.c
> @@ -175,16 +175,14 @@ static int mtk_disp_aal_probe(struct platform_device *pdev)
> return -ENOMEM;
>
> priv->clk = devm_clk_get(dev, NULL);
> - if (IS_ERR(priv->clk)) {
> - dev_err(dev, "failed to get aal clk\n");
> - return PTR_ERR(priv->clk);
> - }
> + if (IS_ERR(priv->clk))
> + return dev_err_probe(dev, PTR_ERR(priv->clk),
> + "failed to get aal clk\n");
>
> priv->regs = devm_platform_ioremap_resource(pdev, 0);
> - if (IS_ERR(priv->regs)) {
> - dev_err(dev, "failed to ioremap aal\n");
> - return PTR_ERR(priv->regs);
> - }
> + if (IS_ERR(priv->regs))
> + return dev_err_probe(dev, PTR_ERR(priv->regs),
> + "failed to ioremap aal\n");
>
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
> @@ -197,9 +195,9 @@ static int mtk_disp_aal_probe(struct platform_device *pdev)
>
> ret = component_add(dev, &mtk_disp_aal_component_ops);
> if (ret)
> - dev_err(dev, "Failed to add component: %d\n", ret);
> + return dev_err_probe(dev, ret, "Failed to add component\n");
>
> - return ret;
> + return 0;
> }
>
> static void mtk_disp_aal_remove(struct platform_device *pdev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c b/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c
> index df35e90dd25f..9b75727e0861 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_ccorr.c
> @@ -160,16 +160,14 @@ static int mtk_disp_ccorr_probe(struct platform_device *pdev)
> return -ENOMEM;
>
> priv->clk = devm_clk_get(dev, NULL);
> - if (IS_ERR(priv->clk)) {
> - dev_err(dev, "failed to get ccorr clk\n");
> - return PTR_ERR(priv->clk);
> - }
> + if (IS_ERR(priv->clk))
> + return dev_err_probe(dev, PTR_ERR(priv->clk),
> + "failed to get ccorr clk\n");
>
> priv->regs = devm_platform_ioremap_resource(pdev, 0);
> - if (IS_ERR(priv->regs)) {
> - dev_err(dev, "failed to ioremap ccorr\n");
> - return PTR_ERR(priv->regs);
> - }
> + if (IS_ERR(priv->regs))
> + return dev_err_probe(dev, PTR_ERR(priv->regs),
> + "failed to ioremap ccorr\n");
>
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
> @@ -182,9 +180,9 @@ static int mtk_disp_ccorr_probe(struct platform_device *pdev)
>
> ret = component_add(dev, &mtk_disp_ccorr_component_ops);
> if (ret)
> - dev_err(dev, "Failed to add component: %d\n", ret);
> + return dev_err_probe(dev, ret, "Failed to add component\n");
>
> - return ret;
> + return 0;
> }
>
> static void mtk_disp_ccorr_remove(struct platform_device *pdev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_color.c b/drivers/gpu/drm/mediatek/mtk_disp_color.c
> index 7f0085be5671..2fd5e7dc9e24 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_color.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_color.c
> @@ -104,17 +104,15 @@ static int mtk_disp_color_probe(struct platform_device *pdev)
> return -ENOMEM;
>
> priv->clk = devm_clk_get(dev, NULL);
> - if (IS_ERR(priv->clk)) {
> - dev_err(dev, "failed to get color clk\n");
> - return PTR_ERR(priv->clk);
> - }
> + if (IS_ERR(priv->clk))
> + return dev_err_probe(dev, PTR_ERR(priv->clk),
> + "failed to get color clk\n");
>
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> priv->regs = devm_ioremap_resource(dev, res);
> - if (IS_ERR(priv->regs)) {
> - dev_err(dev, "failed to ioremap color\n");
> - return PTR_ERR(priv->regs);
> - }
> + if (IS_ERR(priv->regs))
> + return dev_err_probe(dev, PTR_ERR(priv->regs),
> + "failed to ioremap color\n");
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
> if (ret)
> @@ -126,9 +124,9 @@ static int mtk_disp_color_probe(struct platform_device *pdev)
>
> ret = component_add(dev, &mtk_disp_color_component_ops);
> if (ret)
> - dev_err(dev, "Failed to add component: %d\n", ret);
> + return dev_err_probe(dev, ret, "Failed to add component\n");
>
> - return ret;
> + return 0;
> }
>
> static void mtk_disp_color_remove(struct platform_device *pdev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
> index ca8d1f3aca03..f0b38817ba6c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_gamma.c
> @@ -264,17 +264,15 @@ static int mtk_disp_gamma_probe(struct platform_device *pdev)
> return -ENOMEM;
>
> priv->clk = devm_clk_get(dev, NULL);
> - if (IS_ERR(priv->clk)) {
> - dev_err(dev, "failed to get gamma clk\n");
> - return PTR_ERR(priv->clk);
> - }
> + if (IS_ERR(priv->clk))
> + return dev_err_probe(dev, PTR_ERR(priv->clk),
> + "failed to get gamma clk\n");
>
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> priv->regs = devm_ioremap_resource(dev, res);
> - if (IS_ERR(priv->regs)) {
> - dev_err(dev, "failed to ioremap gamma\n");
> - return PTR_ERR(priv->regs);
> - }
> + if (IS_ERR(priv->regs))
> + return dev_err_probe(dev, PTR_ERR(priv->regs),
> + "failed to ioremap gamma\n");
>
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
> @@ -287,9 +285,9 @@ static int mtk_disp_gamma_probe(struct platform_device *pdev)
>
> ret = component_add(dev, &mtk_disp_gamma_component_ops);
> if (ret)
> - dev_err(dev, "Failed to add component: %d\n", ret);
> + return dev_err_probe(dev, ret, "Failed to add component\n");
>
> - return ret;
> + return 0;
> }
>
> static void mtk_disp_gamma_remove(struct platform_device *pdev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_merge.c b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
> index 77c057e0e671..435e5d9c8520 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_merge.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_merge.c
> @@ -316,22 +316,19 @@ static int mtk_disp_merge_probe(struct platform_device *pdev)
>
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> priv->regs = devm_ioremap_resource(dev, res);
> - if (IS_ERR(priv->regs)) {
> - dev_err(dev, "failed to ioremap merge\n");
> - return PTR_ERR(priv->regs);
> - }
> + if (IS_ERR(priv->regs))
> + return dev_err_probe(dev, PTR_ERR(priv->regs),
> + "failed to ioremap merge\n");
>
> priv->clk = devm_clk_get(dev, NULL);
> - if (IS_ERR(priv->clk)) {
> - dev_err(dev, "failed to get merge clk\n");
> - return PTR_ERR(priv->clk);
> - }
> + if (IS_ERR(priv->clk))
> + return dev_err_probe(dev, PTR_ERR(priv->clk),
> + "failed to get merge clk\n");
>
> priv->async_clk = devm_clk_get_optional(dev, "merge_async");
> - if (IS_ERR(priv->async_clk)) {
> - dev_err(dev, "failed to get merge async clock\n");
> - return PTR_ERR(priv->async_clk);
> - }
> + if (IS_ERR(priv->async_clk))
> + return dev_err_probe(dev, PTR_ERR(priv->async_clk),
> + "failed to get merge async clock\n");
>
> if (priv->async_clk) {
> priv->reset_ctl = devm_reset_control_get_optional_exclusive(dev, NULL);
> @@ -354,9 +351,9 @@ static int mtk_disp_merge_probe(struct platform_device *pdev)
>
> ret = component_add(dev, &mtk_disp_merge_component_ops);
> if (ret != 0)
> - dev_err(dev, "Failed to add component: %d\n", ret);
> + return dev_err_probe(dev, ret, "Failed to add component\n");
>
> - return ret;
> + return 0;
> }
>
> static void mtk_disp_merge_remove(struct platform_device *pdev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> index b552a02d7eae..4dd8bb8e8457 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
> @@ -523,17 +523,15 @@ static int mtk_disp_ovl_probe(struct platform_device *pdev)
> return irq;
>
> priv->clk = devm_clk_get(dev, NULL);
> - if (IS_ERR(priv->clk)) {
> - dev_err(dev, "failed to get ovl clk\n");
> - return PTR_ERR(priv->clk);
> - }
> + if (IS_ERR(priv->clk))
> + return dev_err_probe(dev, PTR_ERR(priv->clk),
> + "failed to get ovl clk\n");
>
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> priv->regs = devm_ioremap_resource(dev, res);
> - if (IS_ERR(priv->regs)) {
> - dev_err(dev, "failed to ioremap ovl\n");
> - return PTR_ERR(priv->regs);
> - }
> + if (IS_ERR(priv->regs))
> + return dev_err_probe(dev, PTR_ERR(priv->regs),
> + "failed to ioremap ovl\n");
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
> if (ret)
> @@ -545,20 +543,18 @@ static int mtk_disp_ovl_probe(struct platform_device *pdev)
>
> ret = devm_request_irq(dev, irq, mtk_disp_ovl_irq_handler,
> IRQF_TRIGGER_NONE, dev_name(dev), priv);
> - if (ret < 0) {
> - dev_err(dev, "Failed to request irq %d: %d\n", irq, ret);
> - return ret;
> - }
> + if (ret < 0)
> + return dev_err_probe(dev, ret, "Failed to request irq %d\n", irq);
>
> pm_runtime_enable(dev);
>
> ret = component_add(dev, &mtk_disp_ovl_component_ops);
> if (ret) {
> pm_runtime_disable(dev);
> - dev_err(dev, "Failed to add component: %d\n", ret);
> + return dev_err_probe(dev, ret, "Failed to add component\n");
> }
>
> - return ret;
> + return 0;
> }
>
> static void mtk_disp_ovl_remove(struct platform_device *pdev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
> index 02dd7dcdfedb..0744da867d4e 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
> @@ -612,10 +612,10 @@ static int mtk_disp_ovl_adaptor_probe(struct platform_device *pdev)
> ret = component_add(dev, &mtk_disp_ovl_adaptor_comp_ops);
> if (ret != 0) {
> pm_runtime_disable(dev);
> - dev_err(dev, "Failed to add component: %d\n", ret);
> + return dev_err_probe(dev, ret, "Failed to add component\n");
> }
>
> - return ret;
> + return 0;
> }
>
> static void mtk_disp_ovl_adaptor_remove(struct platform_device *pdev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
> index 7b1a6e631200..634bbba5d43f 100644
> --- a/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
> +++ b/drivers/gpu/drm/mediatek/mtk_disp_rdma.c
> @@ -326,17 +326,15 @@ static int mtk_disp_rdma_probe(struct platform_device *pdev)
> return irq;
>
> priv->clk = devm_clk_get(dev, NULL);
> - if (IS_ERR(priv->clk)) {
> - dev_err(dev, "failed to get rdma clk\n");
> - return PTR_ERR(priv->clk);
> - }
> + if (IS_ERR(priv->clk))
> + return dev_err_probe(dev, PTR_ERR(priv->clk),
> + "failed to get rdma clk\n");
>
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> priv->regs = devm_ioremap_resource(dev, res);
> - if (IS_ERR(priv->regs)) {
> - dev_err(dev, "failed to ioremap rdma\n");
> - return PTR_ERR(priv->regs);
> - }
> + if (IS_ERR(priv->regs))
> + return dev_err_probe(dev, PTR_ERR(priv->regs),
> + "failed to ioremap rdma\n");
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
> if (ret)
> @@ -347,10 +345,9 @@ static int mtk_disp_rdma_probe(struct platform_device *pdev)
> ret = of_property_read_u32(dev->of_node,
> "mediatek,rdma-fifo-size",
> &priv->fifo_size);
> - if (ret) {
> - dev_err(dev, "Failed to get rdma fifo size\n");
> - return ret;
> - }
> + if (ret)
> + return dev_err_probe(dev, ret,
> + "Failed to get rdma fifo size\n");
> }
>
> /* Disable and clear pending interrupts */
> @@ -359,10 +356,8 @@ static int mtk_disp_rdma_probe(struct platform_device *pdev)
>
> ret = devm_request_irq(dev, irq, mtk_disp_rdma_irq_handler,
> IRQF_TRIGGER_NONE, dev_name(dev), priv);
> - if (ret < 0) {
> - dev_err(dev, "Failed to request irq %d: %d\n", irq, ret);
> - return ret;
> - }
> + if (ret < 0)
> + return dev_err_probe(dev, ret, "Failed to request irq %d\n", irq);
>
> priv->data = of_device_get_match_data(dev);
>
> @@ -373,10 +368,10 @@ static int mtk_disp_rdma_probe(struct platform_device *pdev)
> ret = component_add(dev, &mtk_disp_rdma_component_ops);
> if (ret) {
> pm_runtime_disable(dev);
> - dev_err(dev, "Failed to add component: %d\n", ret);
> + return dev_err_probe(dev, ret, "Failed to add component\n");
> }
>
> - return ret;
> + return 0;
> }
>
> static void mtk_disp_rdma_remove(struct platform_device *pdev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c
> index 536366956447..ed335d888b2f 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dp.c
> @@ -2655,11 +2655,9 @@ static int mtk_dp_probe(struct platform_device *pdev)
> mutex_init(&mtk_dp->update_plugged_status_lock);
>
> ret = mtk_dp_register_audio_driver(dev);
> - if (ret) {
> - dev_err(dev, "Failed to register audio driver: %d\n",
> - ret);
> - return ret;
> - }
> + if (ret)
> + return dev_err_probe(dev, ret,
> + "Failed to register audio driver\n");
> }
>
> ret = mtk_dp_register_phy(mtk_dp);
> diff --git a/drivers/gpu/drm/mediatek/mtk_ethdr.c b/drivers/gpu/drm/mediatek/mtk_ethdr.c
> index 156c6ff547e8..b367a080500c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_ethdr.c
> +++ b/drivers/gpu/drm/mediatek/mtk_ethdr.c
> @@ -325,25 +325,24 @@ static int mtk_ethdr_probe(struct platform_device *pdev)
> if (priv->irq) {
> ret = devm_request_irq(dev, priv->irq, mtk_ethdr_irq_handler,
> IRQF_TRIGGER_NONE, dev_name(dev), priv);
> - if (ret < 0) {
> - dev_err(dev, "Failed to request irq %d: %d\n", priv->irq, ret);
> - return ret;
> - }
> + if (ret < 0)
> + return dev_err_probe(dev, ret,
> + "Failed to request irq %d\n",
> + priv->irq);
> }
>
> priv->reset_ctl = devm_reset_control_array_get_optional_exclusive(dev);
> - if (IS_ERR(priv->reset_ctl)) {
> - dev_err_probe(dev, PTR_ERR(priv->reset_ctl), "cannot get ethdr reset control\n");
> - return PTR_ERR(priv->reset_ctl);
> - }
> + if (IS_ERR(priv->reset_ctl))
> + return dev_err_probe(dev, PTR_ERR(priv->reset_ctl),
> + "cannot get ethdr reset control\n");
>
> platform_set_drvdata(pdev, priv);
>
> ret = component_add(dev, &mtk_ethdr_component_ops);
> if (ret)
> - dev_notice(dev, "Failed to add component: %d\n", ret);
> + return dev_err_probe(dev, ret, "Failed to add component\n");
>
> - return ret;
> + return 0;
> }
>
> static void mtk_ethdr_remove(struct platform_device *pdev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> index 6e1cca97a654..3790d0b433cc 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> @@ -1713,26 +1713,22 @@ static int mtk_hdmi_probe(struct platform_device *pdev)
> return ret;
>
> hdmi->phy = devm_phy_get(dev, "hdmi");
> - if (IS_ERR(hdmi->phy)) {
> - ret = PTR_ERR(hdmi->phy);
> - dev_err(dev, "Failed to get HDMI PHY: %d\n", ret);
> - return ret;
> - }
> + if (IS_ERR(hdmi->phy))
> + return dev_err_probe(dev, PTR_ERR(hdmi->phy),
> + "Failed to get HDMI PHY\n");
>
> mutex_init(&hdmi->update_plugged_status_lock);
> platform_set_drvdata(pdev, hdmi);
>
> ret = mtk_hdmi_output_init(hdmi);
> - if (ret) {
> - dev_err(dev, "Failed to initialize hdmi output\n");
> - return ret;
> - }
> + if (ret)
> + return dev_err_probe(dev, ret,
> + "Failed to initialize hdmi output\n");
>
> ret = mtk_hdmi_register_audio_driver(dev);
> - if (ret) {
> - dev_err(dev, "Failed to register audio driver: %d\n", ret);
> - return ret;
> - }
> + if (ret)
> + return dev_err_probe(dev, ret,
> + "Failed to register audio driver\n");
>
> hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs;
> hdmi->bridge.of_node = pdev->dev.of_node;
> @@ -1743,15 +1739,12 @@ static int mtk_hdmi_probe(struct platform_device *pdev)
>
> ret = mtk_hdmi_clk_enable_audio(hdmi);
> if (ret) {
> - dev_err(dev, "Failed to enable audio clocks: %d\n", ret);
> - goto err_bridge_remove;
> + drm_bridge_remove(&hdmi->bridge);
> + return dev_err_probe(dev, ret,
> + "Failed to enable audio clocks\n");
> }
>
> return 0;
> -
> -err_bridge_remove:
> - drm_bridge_remove(&hdmi->bridge);
> - return ret;
> }
>
> static void mtk_hdmi_remove(struct platform_device *pdev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c b/drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c
> index 52d55861f954..8e60631d4cd2 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c
> @@ -279,20 +279,17 @@ static int mtk_hdmi_ddc_probe(struct platform_device *pdev)
> return -ENOMEM;
>
> ddc->clk = devm_clk_get(dev, "ddc-i2c");
> - if (IS_ERR(ddc->clk)) {
> - dev_err(dev, "get ddc_clk failed: %p ,\n", ddc->clk);
> - return PTR_ERR(ddc->clk);
> - }
> + if (IS_ERR(ddc->clk))
> + return dev_err_probe(dev, PTR_ERR(ddc->clk),
> + "get ddc_clk failed\n");
>
> ddc->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &mem);
> if (IS_ERR(ddc->regs))
> return PTR_ERR(ddc->regs);
>
> ret = clk_prepare_enable(ddc->clk);
> - if (ret) {
> - dev_err(dev, "enable ddc clk failed!\n");
> - return ret;
> - }
> + if (ret)
> + return dev_err_probe(dev, ret, "enable ddc clk failed!\n");
>
> strscpy(ddc->adap.name, "mediatek-hdmi-ddc", sizeof(ddc->adap.name));
> ddc->adap.owner = THIS_MODULE;
> @@ -304,8 +301,8 @@ static int mtk_hdmi_ddc_probe(struct platform_device *pdev)
>
> ret = i2c_add_adapter(&ddc->adap);
> if (ret < 0) {
> - dev_err(dev, "failed to add bus to i2c core\n");
> - goto err_clk_disable;
> + clk_disable_unprepare(ddc->clk);
> + return dev_err_probe(dev, ret, "failed to add bus to i2c core\n");
> }
>
> platform_set_drvdata(pdev, ddc);
> @@ -316,10 +313,6 @@ static int mtk_hdmi_ddc_probe(struct platform_device *pdev)
> &mem->end);
>
> return 0;
> -
> -err_clk_disable:
> - clk_disable_unprepare(ddc->clk);
> - return ret;
> }
>
> static void mtk_hdmi_ddc_remove(struct platform_device *pdev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
> index 925cbb7471ec..7c1a8c796833 100644
> --- a/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
> +++ b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
> @@ -301,16 +301,14 @@ static int mtk_mdp_rdma_probe(struct platform_device *pdev)
>
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> priv->regs = devm_ioremap_resource(dev, res);
> - if (IS_ERR(priv->regs)) {
> - dev_err(dev, "failed to ioremap rdma\n");
> - return PTR_ERR(priv->regs);
> - }
> + if (IS_ERR(priv->regs))
> + return dev_err_probe(dev, PTR_ERR(priv->regs),
> + "failed to ioremap rdma\n");
>
> priv->clk = devm_clk_get(dev, NULL);
> - if (IS_ERR(priv->clk)) {
> - dev_err(dev, "failed to get rdma clk\n");
> - return PTR_ERR(priv->clk);
> - }
> + if (IS_ERR(priv->clk))
> + return dev_err_probe(dev, PTR_ERR(priv->clk),
> + "failed to get rdma clk\n");
>
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
> @@ -324,9 +322,9 @@ static int mtk_mdp_rdma_probe(struct platform_device *pdev)
> ret = component_add(dev, &mtk_mdp_rdma_component_ops);
> if (ret != 0) {
> pm_runtime_disable(dev);
> - dev_err(dev, "Failed to add component: %d\n", ret);
> + return dev_err_probe(dev, ret, "Failed to add component\n");
> }
> - return ret;
> + return 0;
> }
>
> static void mtk_mdp_rdma_remove(struct platform_device *pdev)
> diff --git a/drivers/gpu/drm/mediatek/mtk_padding.c b/drivers/gpu/drm/mediatek/mtk_padding.c
> index 85bc6768b6bc..bbda590ca76e 100644
> --- a/drivers/gpu/drm/mediatek/mtk_padding.c
> +++ b/drivers/gpu/drm/mediatek/mtk_padding.c
> @@ -103,23 +103,19 @@ static int mtk_padding_probe(struct platform_device *pdev)
> return -ENOMEM;
>
> priv->clk = devm_clk_get(dev, NULL);
> - if (IS_ERR(priv->clk)) {
> - dev_err(dev, "failed to get clk\n");
> - return PTR_ERR(priv->clk);
> - }
> + if (IS_ERR(priv->clk))
> + return dev_err_probe(dev, PTR_ERR(priv->clk),
> + "failed to get clk\n");
>
> priv->reg = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
> - if (IS_ERR(priv->reg)) {
> - dev_err(dev, "failed to do ioremap\n");
> - return PTR_ERR(priv->reg);
> - }
> + if (IS_ERR(priv->reg))
> + return dev_err_probe(dev, PTR_ERR(priv->reg),
> + "failed to do ioremap\n");
>
> #if IS_REACHABLE(CONFIG_MTK_CMDQ)
> ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
> - if (ret) {
> - dev_err(dev, "failed to get gce client reg\n");
> - return ret;
> - }
> + if (ret)
> + return dev_err_probe(dev, ret, "failed to get gce client reg\n");
> #endif
>
> platform_set_drvdata(pdev, priv);
>
> ---
> base-commit: ee78a17615ad0cfdbbc27182b1047cd36c9d4d5f
> change-id: 20240605-mtk-disp-rdma-dev-err-probe-ef9c10a1a91e
>
> Best regards,
> --
> Nícolas F. R. A. Prado <nfraprado@...labora.com>
>
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