Being informed of a failure to attach a bridge is useful, and many drivers prints an error message in that case. Move the message to drm_bridge_attach() to avoid code duplication.

Suggested-by: Stephen Boyd swboyd@chromium.org Signed-off-by: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com --- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 9 +-------- drivers/gpu/drm/bridge/analogix/anx7625.c | 5 +---- drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 1 - drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 10 +--------- drivers/gpu/drm/drm_bridge.c | 10 ++++++++++ drivers/gpu/drm/exynos/exynos_dp.c | 5 +---- drivers/gpu/drm/exynos/exynos_hdmi.c | 5 +---- drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c | 9 +-------- drivers/gpu/drm/imx/dcss/dcss-kms.c | 5 +---- drivers/gpu/drm/imx/imx-ldb.c | 4 +--- drivers/gpu/drm/imx/parallel-display.c | 5 +---- drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 4 +--- drivers/gpu/drm/kmb/kmb_dsi.c | 1 - drivers/gpu/drm/mcde/mcde_dsi.c | 9 +-------- drivers/gpu/drm/mediatek/mtk_dpi.c | 4 +--- drivers/gpu/drm/mediatek/mtk_hdmi.c | 5 +---- drivers/gpu/drm/omapdrm/omap_drv.c | 6 +----- drivers/gpu/drm/rockchip/rockchip_lvds.c | 5 +---- drivers/gpu/drm/rockchip/rockchip_rgb.c | 5 +---- drivers/gpu/drm/sti/sti_dvo.c | 4 +--- drivers/gpu/drm/sun4i/sun4i_lvds.c | 4 +--- drivers/gpu/drm/sun4i/sun4i_rgb.c | 4 +--- drivers/gpu/drm/tegra/rgb.c | 5 +---- drivers/gpu/drm/tidss/tidss_kms.c | 4 +--- drivers/gpu/drm/tilcdc/tilcdc_external.c | 4 +--- drivers/gpu/drm/vc4/vc4_dsi.c | 4 +--- 26 files changed, 33 insertions(+), 103 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index f115233b1cb9..081c98b2990f 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1583,7 +1583,6 @@ static int analogix_dp_create_bridge(struct drm_device *drm_dev, struct analogix_dp_device *dp) { struct drm_bridge *bridge; - int ret;

bridge = devm_kzalloc(drm_dev->dev, sizeof(*bridge), GFP_KERNEL); if (!bridge) { @@ -1596,13 +1595,7 @@ static int analogix_dp_create_bridge(struct drm_device *drm_dev, bridge->driver_private = dp; bridge->funcs = &analogix_dp_bridge_funcs;

- ret = drm_bridge_attach(dp->encoder, bridge, NULL, 0); - if (ret) { - DRM_ERROR("failed to attach drm bridge\n"); - return -EINVAL; - } - - return 0; + return drm_bridge_attach(dp->encoder, bridge, NULL, 0); }

static int analogix_dp_dt_parse_pdata(struct analogix_dp_device *dp) diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c index 23283ba0c4f9..702040922beb 100644 --- a/drivers/gpu/drm/bridge/analogix/anx7625.c +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c @@ -1411,11 +1411,8 @@ static int anx7625_bridge_attach(struct drm_bridge *bridge, err = drm_bridge_attach(bridge->encoder, ctx->pdata.panel_bridge, &ctx->bridge, flags); - if (err) { - DRM_DEV_ERROR(dev, - "Fail to attach panel bridge: %d\n", err); + if (err) return err; - } }

ctx->bridge_attached = 1; diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index dda4fa9a1a08..fac3ec4f7239 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -3490,7 +3490,6 @@ struct dw_hdmi *dw_hdmi_bind(struct platform_device *pdev, ret = drm_bridge_attach(encoder, &hdmi->bridge, NULL, 0); if (ret) { dw_hdmi_remove(hdmi); - DRM_ERROR("Failed to initialize bridge with drm\n"); return ERR_PTR(ret); }

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index 6b268f9445b3..7900da1d4325 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -1229,15 +1229,7 @@ EXPORT_SYMBOL_GPL(dw_mipi_dsi_remove); */ int dw_mipi_dsi_bind(struct dw_mipi_dsi *dsi, struct drm_encoder *encoder) { - int ret; - - ret = drm_bridge_attach(encoder, &dsi->bridge, NULL, 0); - if (ret) { - DRM_ERROR("Failed to initialize bridge with drm\n"); - return ret; - } - - return ret; + return drm_bridge_attach(encoder, &dsi->bridge, NULL, 0); } EXPORT_SYMBOL_GPL(dw_mipi_dsi_bind);

diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c index 64f0effb52ac..e689fc7a2275 100644 --- a/drivers/gpu/drm/drm_bridge.c +++ b/drivers/gpu/drm/drm_bridge.c @@ -28,6 +28,7 @@ #include <drm/drm_atomic_state_helper.h> #include <drm/drm_bridge.h> #include <drm/drm_encoder.h> +#include <drm/drm_print.h>

#include "drm_crtc_internal.h"

@@ -225,6 +226,15 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge, bridge->dev = NULL; bridge->encoder = NULL; list_del(&bridge->chain_node); + +#ifdef CONFIG_OF + DRM_ERROR("failed to attach bridge %pOF to encoder %s: %d\n", + bridge->of_node, encoder->name, ret); +#else + DRM_ERROR("failed to attach bridge to encoder %s: %d\n", + encoder->name, ret); +#endif + return ret; } EXPORT_SYMBOL(drm_bridge_attach); diff --git a/drivers/gpu/drm/exynos/exynos_dp.c b/drivers/gpu/drm/exynos/exynos_dp.c index 9ac51b6ab34b..27664f663c5a 100644 --- a/drivers/gpu/drm/exynos/exynos_dp.c +++ b/drivers/gpu/drm/exynos/exynos_dp.c @@ -109,11 +109,8 @@ static int exynos_dp_bridge_attach(struct analogix_dp_plat_data *plat_data, if (dp->ptn_bridge) { ret = drm_bridge_attach(&dp->encoder, dp->ptn_bridge, bridge, 0); - if (ret) { - DRM_DEV_ERROR(dp->dev, - "Failed to attach bridge to drm\n"); + if (ret) return ret; - } }

return 0; diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 39fa5d3b01ef..26a00999cb3b 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -970,11 +970,8 @@ static int hdmi_create_connector(struct drm_encoder *encoder) drm_connector_helper_add(connector, &hdmi_connector_helper_funcs); drm_connector_attach_encoder(connector, encoder);

- if (hdata->bridge) { + if (hdata->bridge) ret = drm_bridge_attach(encoder, hdata->bridge, NULL, 0); - if (ret) - DRM_DEV_ERROR(hdata->dev, "Failed to attach bridge\n"); - }

cec_fill_conn_info_from_drm(&conn_info, connector);

diff --git a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c index 00e87c290796..d79745917fc9 100644 --- a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c +++ b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c @@ -769,16 +769,9 @@ static int dsi_bridge_init(struct drm_device *dev, struct dw_dsi *dsi) { struct drm_encoder *encoder = &dsi->encoder; struct drm_bridge *bridge = dsi->bridge; - int ret;

/* associate the bridge to dsi encoder */ - ret = drm_bridge_attach(encoder, bridge, NULL, 0); - if (ret) { - DRM_ERROR("failed to attach external bridge\n"); - return ret; - } - - return 0; + return drm_bridge_attach(encoder, bridge, NULL, 0); }

static int dsi_bind(struct device *dev, struct device *master, void *data) diff --git a/drivers/gpu/drm/imx/dcss/dcss-kms.c b/drivers/gpu/drm/imx/dcss/dcss-kms.c index b549ce5e7607..a82272147d3d 100644 --- a/drivers/gpu/drm/imx/dcss/dcss-kms.c +++ b/drivers/gpu/drm/imx/dcss/dcss-kms.c @@ -94,11 +94,8 @@ static int dcss_kms_bridge_connector_init(struct dcss_kms_dev *kms)

ret = drm_bridge_attach(encoder, bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR); - if (ret < 0) { - dev_err(ddev->dev, "Unable to attach bridge %pOF\n", - bridge->of_node); + if (ret < 0) return ret; - }

kms->connector = drm_bridge_connector_init(ddev, encoder); if (IS_ERR(kms->connector)) { diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c index ffdc492c5bc5..d5f8cb03775a 100644 --- a/drivers/gpu/drm/imx/imx-ldb.c +++ b/drivers/gpu/drm/imx/imx-ldb.c @@ -460,10 +460,8 @@ static int imx_ldb_register(struct drm_device *drm,

if (imx_ldb_ch->bridge) { ret = drm_bridge_attach(encoder, imx_ldb_ch->bridge, NULL, 0); - if (ret) { - DRM_ERROR("Failed to initialize bridge with drm\n"); + if (ret) return ret; - } } else { /* * We want to add the connector whenever there is no bridge diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c index e0412e694fd9..a8aba0141ce7 100644 --- a/drivers/gpu/drm/imx/parallel-display.c +++ b/drivers/gpu/drm/imx/parallel-display.c @@ -294,11 +294,8 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)

if (imxpd->next_bridge) { ret = drm_bridge_attach(encoder, imxpd->next_bridge, bridge, 0); - if (ret < 0) { - dev_err(imxpd->dev, "failed to attach bridge: %d\n", - ret); + if (ret < 0) return ret; - } } else { drm_connector_helper_add(connector, &imx_pd_connector_helper_funcs); diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c index 29742ec5ab95..2d89ec1608f7 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c @@ -1036,10 +1036,8 @@ static int ingenic_drm_bind(struct device *dev, bool has_components) drm_encoder_helper_add(encoder, &ingenic_drm_encoder_helper_funcs);

ret = drm_bridge_attach(encoder, bridge, NULL, 0); - if (ret) { - dev_err(dev, "Unable to attach bridge\n"); + if (ret) return ret; - } }

drm_for_each_encoder(encoder, drm) { diff --git a/drivers/gpu/drm/kmb/kmb_dsi.c b/drivers/gpu/drm/kmb/kmb_dsi.c index 4b5d82af84b3..12935aca7ee0 100644 --- a/drivers/gpu/drm/kmb/kmb_dsi.c +++ b/drivers/gpu/drm/kmb/kmb_dsi.c @@ -1441,7 +1441,6 @@ int kmb_dsi_encoder_init(struct drm_device *dev, struct kmb_dsi *kmb_dsi) ret = drm_bridge_attach(encoder, adv_bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR); if (ret) { - DRM_ERROR("failed to attach bridge to MIPI\n"); drm_encoder_cleanup(encoder); return ret; } diff --git a/drivers/gpu/drm/mcde/mcde_dsi.c b/drivers/gpu/drm/mcde/mcde_dsi.c index b3fd3501c412..51adace2611f 100644 --- a/drivers/gpu/drm/mcde/mcde_dsi.c +++ b/drivers/gpu/drm/mcde/mcde_dsi.c @@ -1052,7 +1052,6 @@ static int mcde_dsi_bridge_attach(struct drm_bridge *bridge, { struct mcde_dsi *d = bridge_to_mcde_dsi(bridge); struct drm_device *drm = bridge->dev; - int ret;

if (!drm_core_check_feature(drm, DRIVER_ATOMIC)) { dev_err(d->dev, "we need atomic updates\n"); @@ -1060,13 +1059,7 @@ static int mcde_dsi_bridge_attach(struct drm_bridge *bridge, }

/* Attach the DSI bridge to the output (panel etc) bridge */ - ret = drm_bridge_attach(bridge->encoder, d->bridge_out, bridge, flags); - if (ret) { - dev_err(d->dev, "failed to attach the DSI bridge\n"); - return ret; - } - - return 0; + return drm_bridge_attach(bridge->encoder, d->bridge_out, bridge, flags); }

static const struct drm_bridge_funcs mcde_dsi_bridge_funcs = { diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index bea91c81626e..18c161f89fec 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -610,10 +610,8 @@ static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)

ret = drm_bridge_attach(&dpi->encoder, &dpi->bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR); - if (ret) { - dev_err(dev, "Failed to attach bridge: %d\n", ret); + if (ret) goto err_cleanup; - }

dpi->connector = drm_bridge_connector_init(drm_dev, &dpi->encoder); if (IS_ERR(dpi->connector)) { diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index dea46d66e712..d0963e5a0ab9 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -1284,11 +1284,8 @@ static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge, if (hdmi->next_bridge) { ret = drm_bridge_attach(bridge->encoder, hdmi->next_bridge, bridge, flags); - if (ret) { - dev_err(hdmi->dev, - "Failed to attach external bridge: %d\n", ret); + if (ret) return ret; - } }

mtk_cec_set_hpd_event(hdmi->cec_dev, mtk_hdmi_hpd_event, hdmi->dev); diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c index 8632139e0f01..f86e20578143 100644 --- a/drivers/gpu/drm/omapdrm/omap_drv.c +++ b/drivers/gpu/drm/omapdrm/omap_drv.c @@ -290,12 +290,8 @@ static int omap_modeset_init(struct drm_device *dev) ret = drm_bridge_attach(pipe->encoder, pipe->output->bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR); - if (ret < 0) { - dev_err(priv->dev, - "unable to attach bridge %pOF\n", - pipe->output->bridge->of_node); + if (ret < 0) return ret; - } }

id = omap_display_id(pipe->output); diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c index bd5ba10822c2..b541271e66d9 100644 --- a/drivers/gpu/drm/rockchip/rockchip_lvds.c +++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c @@ -636,11 +636,8 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master, } } else { ret = drm_bridge_attach(encoder, lvds->bridge, NULL, 0); - if (ret) { - DRM_DEV_ERROR(drm_dev->dev, - "failed to attach bridge: %d\n", ret); + if (ret) goto err_free_encoder; - } }

pm_runtime_enable(dev); diff --git a/drivers/gpu/drm/rockchip/rockchip_rgb.c b/drivers/gpu/drm/rockchip/rockchip_rgb.c index c079714477d8..d691d9bef8e7 100644 --- a/drivers/gpu/drm/rockchip/rockchip_rgb.c +++ b/drivers/gpu/drm/rockchip/rockchip_rgb.c @@ -143,11 +143,8 @@ struct rockchip_rgb *rockchip_rgb_init(struct device *dev, rgb->bridge = bridge;

ret = drm_bridge_attach(encoder, rgb->bridge, NULL, 0); - if (ret) { - DRM_DEV_ERROR(drm_dev->dev, - "failed to attach bridge: %d\n", ret); + if (ret) goto err_free_encoder; - }

return rgb;

diff --git a/drivers/gpu/drm/sti/sti_dvo.c b/drivers/gpu/drm/sti/sti_dvo.c index ddb4184f0726..b6ee8a82e656 100644 --- a/drivers/gpu/drm/sti/sti_dvo.c +++ b/drivers/gpu/drm/sti/sti_dvo.c @@ -463,10 +463,8 @@ static int sti_dvo_bind(struct device *dev, struct device *master, void *data) drm_bridge_add(bridge);

err = drm_bridge_attach(encoder, bridge, NULL, 0); - if (err) { - DRM_ERROR("Failed to attach bridge\n"); + if (err) return err; - }

dvo->bridge = bridge; connector->encoder = encoder; diff --git a/drivers/gpu/drm/sun4i/sun4i_lvds.c b/drivers/gpu/drm/sun4i/sun4i_lvds.c index ac570437172e..6716e895ae8a 100644 --- a/drivers/gpu/drm/sun4i/sun4i_lvds.c +++ b/drivers/gpu/drm/sun4i/sun4i_lvds.c @@ -142,10 +142,8 @@ int sun4i_lvds_init(struct drm_device *drm, struct sun4i_tcon *tcon)

if (bridge) { ret = drm_bridge_attach(encoder, bridge, NULL, 0); - if (ret) { - dev_err(drm->dev, "Couldn't attach our bridge\n"); + if (ret) goto err_cleanup_connector; - } }

return 0; diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.c b/drivers/gpu/drm/sun4i/sun4i_rgb.c index e172426eb7e9..dfb6acc42f02 100644 --- a/drivers/gpu/drm/sun4i/sun4i_rgb.c +++ b/drivers/gpu/drm/sun4i/sun4i_rgb.c @@ -234,10 +234,8 @@ int sun4i_rgb_init(struct drm_device *drm, struct sun4i_tcon *tcon)

if (rgb->bridge) { ret = drm_bridge_attach(encoder, rgb->bridge, NULL, 0); - if (ret) { - dev_err(drm->dev, "Couldn't attach our bridge\n"); + if (ret) goto err_cleanup_connector; - } }

return 0; diff --git a/drivers/gpu/drm/tegra/rgb.c b/drivers/gpu/drm/tegra/rgb.c index 4142a56ca764..606c78a2b988 100644 --- a/drivers/gpu/drm/tegra/rgb.c +++ b/drivers/gpu/drm/tegra/rgb.c @@ -275,11 +275,8 @@ int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc) if (output->bridge) { err = drm_bridge_attach(&output->encoder, output->bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR); - if (err) { - dev_err(output->dev, "failed to attach bridge: %d\n", - err); + if (err) return err; - }

connector = drm_bridge_connector_init(drm, &output->encoder); if (IS_ERR(connector)) { diff --git a/drivers/gpu/drm/tidss/tidss_kms.c b/drivers/gpu/drm/tidss/tidss_kms.c index 95f8e0f78e32..666e527a0acf 100644 --- a/drivers/gpu/drm/tidss/tidss_kms.c +++ b/drivers/gpu/drm/tidss/tidss_kms.c @@ -227,10 +227,8 @@ static int tidss_dispc_modeset_init(struct tidss_device *tidss) }

ret = drm_bridge_attach(enc, pipes[i].bridge, NULL, 0); - if (ret) { - dev_err(tidss->dev, "bridge attach failed: %d\n", ret); + if (ret) return ret; - } }

/* create overlay planes of the leftover planes */ diff --git a/drivers/gpu/drm/tilcdc/tilcdc_external.c b/drivers/gpu/drm/tilcdc/tilcdc_external.c index b177525588c1..7594cf6e186e 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_external.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_external.c @@ -93,10 +93,8 @@ int tilcdc_attach_bridge(struct drm_device *ddev, struct drm_bridge *bridge) priv->external_encoder->possible_crtcs = BIT(0);

ret = drm_bridge_attach(priv->external_encoder, bridge, NULL, 0); - if (ret) { - dev_err(ddev->dev, "drm_bridge_attach() failed %d\n", ret); + if (ret) return ret; - }

tilcdc_crtc_set_panel_info(priv->crtc, &panel_info_default);

diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c index a55256ed0955..a185027911ce 100644 --- a/drivers/gpu/drm/vc4/vc4_dsi.c +++ b/drivers/gpu/drm/vc4/vc4_dsi.c @@ -1646,10 +1646,8 @@ static int vc4_dsi_bind(struct device *dev, struct device *master, void *data) drm_encoder_helper_add(dsi->encoder, &vc4_dsi_encoder_helper_funcs);

ret = drm_bridge_attach(dsi->encoder, dsi->bridge, NULL, 0); - if (ret) { - dev_err(dev, "bridge attach failed: %d\n", ret); + if (ret) return ret; - } /* Disable the atomic helper calls into the bridge. We * manually call the bridge pre_enable / enable / etc. calls * from our driver, since we need to sequence them within the