From 2a865248399a13bb2b2bcc50297069a7521de258 Mon Sep 17 00:00:00 2001 From: Ahmad Fatoum Date: Wed, 26 Oct 2022 14:52:46 +0200 Subject: [PATCH] drm: bridge: adv7511: use dev_err_probe in probe function adv7511 probe may need to be attempted multiple times before no -EPROBE_DEFER is returned. Currently, every such probe results in an error message: [ 4.534229] adv7511 1-003d: failed to find dsi host [ 4.580288] adv7511 1-003d: failed to find dsi host This is misleading, as there is no error and probe deferral is normal behavior. Fix this by using dev_err_probe that will suppress -EPROBE_DEFER errors. While at it, we touch all dev_err in the probe path. This makes the code more concise and included the error code everywhere to aid user in debugging. Reviewed-by: Laurent Pinchart Signed-off-by: Ahmad Fatoum Signed-off-by: Neil Armstrong Link: https://patchwork.freedesktop.org/patch/msgid/20221026125246.3188260-1-a.fatoum@pengutronix.de --- drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 6 ++---- drivers/gpu/drm/bridge/adv7511/adv7533.c | 20 ++++++++------------ 2 files changed, 10 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c index 78b7273..e7a6e45 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c @@ -1219,10 +1219,8 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id) return ret; ret = adv7511_init_regulators(adv7511); - if (ret) { - dev_err(dev, "failed to init regulators\n"); - return ret; - } + if (ret) + return dev_err_probe(dev, ret, "failed to init regulators\n"); /* * The power down GPIO is optional. If present, toggle it from active to diff --git a/drivers/gpu/drm/bridge/adv7511/adv7533.c b/drivers/gpu/drm/bridge/adv7511/adv7533.c index 258c79d..fdfeadc 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7533.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7533.c @@ -149,16 +149,14 @@ int adv7533_attach_dsi(struct adv7511 *adv) }; host = of_find_mipi_dsi_host_by_node(adv->host_node); - if (!host) { - dev_err(dev, "failed to find dsi host\n"); - return -EPROBE_DEFER; - } + if (!host) + return dev_err_probe(dev, -EPROBE_DEFER, + "failed to find dsi host\n"); dsi = devm_mipi_dsi_device_register_full(dev, host, &info); - if (IS_ERR(dsi)) { - dev_err(dev, "failed to create dsi device\n"); - return PTR_ERR(dsi); - } + if (IS_ERR(dsi)) + return dev_err_probe(dev, PTR_ERR(dsi), + "failed to create dsi device\n"); adv->dsi = dsi; @@ -168,10 +166,8 @@ int adv7533_attach_dsi(struct adv7511 *adv) MIPI_DSI_MODE_NO_EOT_PACKET | MIPI_DSI_MODE_VIDEO_HSE; ret = devm_mipi_dsi_attach(dev, dsi); - if (ret < 0) { - dev_err(dev, "failed to attach dsi to host\n"); - return ret; - } + if (ret < 0) + return dev_err_probe(dev, ret, "failed to attach dsi to host\n"); return 0; } -- 2.7.4