linux-kernel - Re: [PATCH,v2] drm/panel: Fix return value check in nt35950

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Message-ID: <YjOKIhGhZ8Rm+SQ+@ravnborg.org>
Date:   Thu, 17 Mar 2022 20:21:06 +0100
From:   Sam Ravnborg <sam@...nborg.org>
To:     Lu Wei <luwei32@...wei.com>
Cc:     thierry.reding@...il.com, airlied@...ux.ie, daniel@...ll.ch,
        marijn.suijten@...ainline.org,
        angelogioacchino.delregno@...ainline.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH,v2] drm/panel: Fix return value check in nt35950_probe()

On Thu, Mar 17, 2022 at 04:37:07PM +0800, Lu Wei wrote:
> In function nt35950_probe(), mipi_dsi_device_register_full() is called
> to create a MIPI DSI device. If it fails, a pointer encoded with an error
> will be returned, so use IS_ERR() to check the return value. Besides, use
> PTR_ERR to return the actual errno.
> 
> Fixes: 623a3531e9cf ("drm/panel: Add driver for Novatek NT35950 DSI DriverIC panels")
> Signed-off-by: Lu Wei <luwei32@...wei.com>
Acked-by: Sam Ravnborg <sam@...nborg.org>