From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartlomiej Zolnierkiewicz Date: Wed, 08 Feb 2017 14:21:43 +0000 Subject: Re: [PATCH] omapfb: dss: Handle return error in dss_init_ports. Message-Id: <1645625.BTpumnS8aX@amdc3058> List-Id: References: <25198769.WjcufK8OeX@amdc3058> In-Reply-To: <25198769.WjcufK8OeX@amdc3058> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Arvind Yadav Cc: tomi.valkeinen@ti.com, linux-omap@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org On Wednesday, February 08, 2017 11:25:47 AM Bartlomiej Zolnierkiewicz wrote: > > Hi, > > On Tuesday, February 07, 2017 05:41:37 PM Arvind Yadav wrote: > > Hi, > > > > In dss_init_ports, There is no need to add dss_uninit_ports before > > returning. > > Because it's already take care in dss_bind. dss_bind is handling > > dss_uninit_ports in error path. > > It doesn't handle cleanup of partially initialized ports, BTW by "partially initialized ports" here I mean cases like i.e. dpi port fully initialized and sdi one not initialized > please look at the code: > > ... > r = dss_init_ports(pdev); > if (r) > goto err_init_ports; > ... > err_runtime_get: > pm_runtime_disable(&pdev->dev); > dss_uninit_ports(pdev); > err_init_ports: > if (dss.video1_pll) > dss_video_pll_uninit(dss.video1_pll); > ... > > dss_uninit_ports() is not called on partially initialized ditto > ports (when dss_init_ports() returns an error we go straight > into err_init_ports label and skip dss_uninit_ports()) > > > -Arvind > > > > > > On Monday 06 February 2017 08:58 PM, Bartlomiej Zolnierkiewicz wrote: > > > dpi_uninit_port() & sdi_uninit_port() skip not fully > > > initialized port Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics