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charset=UTF-8 Date: Tue, 20 Oct 2026 13:24:24 +0200 Message-Id: Cc: , , "Jessica Zhang" , "Purism Kernel Team" , "Ondrej Jirman" , "Janne Grunau" , To: "Osama Abdelkader" , "Luca Ceresoli" , "Neil Armstrong" , "Maarten Lankhorst" , "Maxime Ripard" , "Thomas Zimmermann" , "David Airlie" , "Simona Vetter" , "Joel Selvaraj" , "Icenowy Zheng" , "Jagan Teki" , "Sumit Semwal" , "Casey Connolly" , "Michael Tretter" , =?utf-8?q?Guido_G=C3=BCnther?= , "Sasha Finkelstein" , "Michael Trimarchi" From: "Luca Ceresoli" Subject: Re: [PATCH v7 3/3] drm/panel: Use managed helpers in assorted panels X-Mailer: aerc 0.22.0 References: In-Reply-To: X-Last-TLS-Session-Version: TLSv1.3 On Mon Sep 21, 2026 at 3:17 PM CEST, Osama Abdelkader wrote: > Use the managed MIPI DSI attach and panel add helpers in assorted > panel drivers and drop the corresponding manual detach and panel remove > calls from remove paths. > > Suggested-by: Luca Ceresoli > Signed-off-by: Osama Abdelkader ... > --- a/drivers/gpu/drm/panel/panel-ebbg-ft8719.c > +++ b/drivers/gpu/drm/panel/panel-ebbg-ft8719.c > @@ -202,30 +202,19 @@ static int ebbg_ft8719_probe(struct mipi_dsi_device= *dsi) > if (ret) > return dev_err_probe(dev, ret, "Failed to get backlight\n"); > > - drm_panel_add(&ctx->panel); > + ret =3D devm_drm_panel_add(dev, &ctx->panel); > + if (ret) > + return ret; > > - ret =3D mipi_dsi_attach(dsi); > + ret =3D devm_mipi_dsi_attach(&dsi->dev, dsi); > if (ret < 0) { > dev_err(dev, "Failed to attach to DSI host: %d\n", ret); > - drm_panel_remove(&ctx->panel); > return ret; > } As for patch 2, this could be even simpler by using dev_err_probe(). Same for other drivers in this patch. > --- a/drivers/gpu/drm/panel/panel-sitronix-st7701.c > +++ b/drivers/gpu/drm/panel/panel-sitronix-st7701.c > @@ -1263,7 +1263,6 @@ static void st7701_cleanup(void *data) > { > struct st7701 *st7701 =3D (struct st7701 *)data; > > - drm_panel_remove(&st7701->panel); > drm_panel_disable(&st7701->panel); > drm_panel_unprepare(&st7701->panel); > } The last two calls here appear inappropriate IMO. However it's not an issue with your patch. Reviewed-by: Luca Ceresoli Luca -- Luca Ceresoli, Bootlin Embedded Linux and Kernel engineering https://bootlin.com