From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-op-o11.zoho.com (sender4-op-o11.zoho.com [136.143.188.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C1A4B46AEE1 for ; Wed, 15 Jul 2026 12:40:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.11 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784119232; cv=pass; b=HDJHEtzcVzGbxQMCZFz2jclUfw7S07eRE7YIY067xGBIr4NE4+8LocMBLuY+FbcwaGSSQ+qiSCUSNYi0fAIci9/IJpL8OOnJq6B988YxReepCkWM654SfbkY9yflVo5b1IkQy53MsNxWPBEeWwmt8Z9U+MIHYM8czWQyZDqTtaU= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784119232; c=relaxed/simple; bh=xHG6LDlaYRY8QugwBuduP1JYoBGuvm0qagFeeMOwYxo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=OdbdGc8Uiekv3EYdfR6A+94BlbE/wo38INf7Pfr2SxHOOuKYLDQq5cbQYAMrjvzYRA5d3X1k2EqYt6L/cT8DHOGKis8y0YPUc/PAx7g96rO4aEYmTDzCmtCiuLTjKUOJc3D+cJFUqgR4vJGLotzrS/XwiaSnq69ZPx4zsVsJPnA= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=adrian.larumbe@collabora.com header.b=M4IKk3GA; arc=pass smtp.client-ip=136.143.188.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=adrian.larumbe@collabora.com header.b="M4IKk3GA" ARC-Seal: i=1; a=rsa-sha256; t=1784119208; cv=none; d=zohomail.com; s=zohoarc; b=baLqQDNLRjzh+brdn4GNpg7BrcJePw1t9WaYcJkc/E+DfIx4meyCtRorc8YDznyhFvmojEuYeQQMPMOoBZpfX62i7giDtRd4YZJ0FeolCsRQqd7KoYMQrBEHtrq3llJEr+iI73x/Z+LRCAvQujRcVJXveZgSdS6oYIuLUsNZfXk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1784119208; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=+I1b/owU/yq2us4KQX29FdI6Z7kCdnxHxEnOX13hBXA=; b=T3l+tjjAwXKyeid9FFn2ushKV7v5XskiGWA4cOFlXz7EC5EXStEbyfgTJhYLy0Ak78Dq9UMotGvEkKdnYvDAR1S2AOukb1wjHWpkjKGwKkpjt8VdoLxSnndMqgY3oDC5DWdmHvC5C2NEuFqgWNf9Ny/P8eHBTbZjnyRjKvYqnOE= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=adrian.larumbe@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1784119208; s=zohomail; d=collabora.com; i=adrian.larumbe@collabora.com; h=Date:Date:From:From:To:To:Cc:Cc:Subject:Subject:Message-ID:References:MIME-Version:Content-Type:Content-Transfer-Encoding:In-Reply-To:Message-Id:Reply-To; bh=+I1b/owU/yq2us4KQX29FdI6Z7kCdnxHxEnOX13hBXA=; b=M4IKk3GA88LOD64gS2yEudsUSEFTE+b5CUAJbKd5jvU+rcCNiA9gPFERfUebrpvJ +w0Gdkauh1t1pwR6cWIZwnEFK4fm/QP0mS8pChp+G5k3Bj4cCCaw9btr3Lfh5XypTx2 o4UV3E+k2yD95IN2GG4yFPVBdul63AR6f6N4aLW0= Received: by mx.zohomail.com with SMTPS id 1784119205798338.3895518709709; Wed, 15 Jul 2026 05:40:05 -0700 (PDT) Date: Wed, 15 Jul 2026 13:40:01 +0100 From: =?utf-8?Q?Adri=C3=A1n?= Larumbe To: Linmao Li Cc: Boris Brezillon , Steven Price , Liviu Dudau , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] drm/panthor: Check debugfs GEM lock initialization Message-ID: References: <20260713082912.321021-1-lilinmao@kylinos.cn> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20260713082912.321021-1-lilinmao@kylinos.cn> Reviewed-by: Adrián Larumbe On 13.07.2026 16:29, Linmao Li wrote: > drmm_mutex_init() can fail while registering the managed cleanup action. > When that happens, drmm_add_action_or_reset() destroys the mutex before > returning the error. Continuing initialization would therefore leave the > debugfs GEM object list with an unusable lock. > > Propagate the error as is already done for the other managed mutexes in > panthor_device_init(). > > Fixes: a3707f53eb3f ("drm/panthor: show device-wide list of DRM GEM objects over DebugFS") > Signed-off-by: Linmao Li > --- > drivers/gpu/drm/panthor/panthor_device.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/panthor/panthor_device.c b/drivers/gpu/drm/panthor/panthor_device.c > index 0b25abebb803..9687c59de350 100644 > --- a/drivers/gpu/drm/panthor/panthor_device.c > +++ b/drivers/gpu/drm/panthor/panthor_device.c > @@ -182,7 +182,10 @@ int panthor_device_init(struct panthor_device *ptdev) > return ret; > > #ifdef CONFIG_DEBUG_FS > - drmm_mutex_init(&ptdev->base, &ptdev->gems.lock); > + ret = drmm_mutex_init(&ptdev->base, &ptdev->gems.lock); > + if (ret) > + return ret; > + > INIT_LIST_HEAD(&ptdev->gems.node); > #endif > > -- > 2.25.1 > Adrian Larumbe