[PATCH v4 21/24] drm/bridge: tc358775: Switch to devm MIPI-DSI helpers

From: Maxime Ripard
Date: Fri Sep 10 2021 - 06:14:38 EST


Let's switch to the new devm MIPI-DSI function to register and attach
our secondary device. This also avoids leaking the device when we detach
the bridge.

Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
---
drivers/gpu/drm/bridge/tc358775.c | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
index 2272adcc5b4a..35e66d1b6456 100644
--- a/drivers/gpu/drm/bridge/tc358775.c
+++ b/drivers/gpu/drm/bridge/tc358775.c
@@ -610,11 +610,10 @@ static int tc_bridge_attach(struct drm_bridge *bridge,
return -EPROBE_DEFER;
}

- dsi = mipi_dsi_device_register_full(host, &info);
+ dsi = devm_mipi_dsi_device_register_full(dev, host, &info);
if (IS_ERR(dsi)) {
dev_err(dev, "failed to create dsi device\n");
- ret = PTR_ERR(dsi);
- goto err_dsi_device;
+ return PTR_ERR(dsi);
}

tc->dsi = dsi;
@@ -623,19 +622,15 @@ static int tc_bridge_attach(struct drm_bridge *bridge,
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO;

- ret = mipi_dsi_attach(dsi);
+ ret = devm_mipi_dsi_attach(dev, dsi);
if (ret < 0) {
dev_err(dev, "failed to attach dsi to host\n");
- goto err_dsi_attach;
+ return ret;
}

/* Attach the panel-bridge to the dsi bridge */
return drm_bridge_attach(bridge->encoder, tc->panel_bridge,
&tc->bridge, flags);
-err_dsi_attach:
- mipi_dsi_device_unregister(dsi);
-err_dsi_device:
- return ret;
}

static const struct drm_bridge_funcs tc_bridge_funcs = {
--
2.31.1