From nobody Thu Dec 25 10:53:10 2025 Received: from mail-ot1-f42.google.com (mail-ot1-f42.google.com [209.85.210.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8F00122EE3 for ; Wed, 17 Jan 2024 18:35:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705516537; cv=none; b=J9s40ybWDAbiau3zvc3PBN1UJfEo5d6jLTryCpwudXf/EAQpgN23fGSZ9zM+uKHjbt/4WZHuOiL9otpZPQDl8OCGvvI2lKtrr3RTLm78QFy4F9JyriHd5/SB5wbGlFTgtheZjU3YSOtXHNuaeZceJL2kXG3ILpyB8G/75Z/0Qnk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705516537; c=relaxed/simple; bh=tugHWeY5jAaSBGspVjSdqKXVWtqduV8QmkpnxiUidqw=; h=Received:DKIM-Signature:X-Google-DKIM-Signature: X-Gm-Message-State:X-Google-Smtp-Source:X-Received:Received:From: To:Cc:Subject:Date:Message-ID:X-Mailer:MIME-Version: Content-Transfer-Encoding; b=SzRrd+yT7BBfK7yfddjK320h4pSHfnVk5BEEOfQv3hPywg9MWrQoESm4FP6n+9r7Raul/wyTVe1ViZUgSnxObhaqSgC3ld5T/ADvjpe5QNkhzVnKSsx44xXwa0CuzxO7ZniD+jj+KZ0kwNC1bJKMZYpNBjWqYxgVYJrkrldAKDE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=RCj9hkDV; arc=none smtp.client-ip=209.85.210.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="RCj9hkDV" Received: by mail-ot1-f42.google.com with SMTP id 46e09a7af769-6ddf1e88e51so5526360a34.0 for ; Wed, 17 Jan 2024 10:35:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1705516534; x=1706121334; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=dGYRtDKlKnGOQduq4VNWov4UOWEDuy3ZPEgEUd75zZg=; b=RCj9hkDV2f4FaPshDzZz2wXBHJRCnQUA64oQRebW8lCbOn1Qf6xNXaWy+CF9w6ytDv M/RtDaJT1xt8MrKKr7U/uF5E9AqYNgVZ61iqknH60uYjJwrPSx/EtAYtONsS7tAm8Y0G jHi6ehK8P5M3w2czPtk5oaIGNWSOS+lFcUHxw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1705516534; x=1706121334; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=dGYRtDKlKnGOQduq4VNWov4UOWEDuy3ZPEgEUd75zZg=; b=iVWgsHFWOOBpQnQQYMcMvOtbOk9b200b8x8WhxQqyHHozL7W2mdBjV9z5b5dH8Na2L DiOk0IoEiIfq1MGSl/meQLHKWotRI3gtDNc/Vzu3RB0QfTzcliWc5ObLcMuuUjNH7JyM vXrZ9EAdgBtZli6+l33Tw+Oaeu2XeuWqcXC1D5osiq5k9NFv+bP48McVrELjulRK4XnV vIIgIaueA3CTVLCCX2FVD5o3uOYvLewJI6DCdBA1lcvW6N7IrKPC9y/voUCsI4TwkanY wkj2She84Ulv0y5Gh/G4IxFO3zhrGze09zVlJ1rtAUyM28l9pDyTyDYDL0xgs2b5HKj0 08aQ== X-Gm-Message-State: AOJu0Yzpgw4iFiPhOcrzt6W+1tXp7mQ97ZWhOEJ4i4caqVKe2oj4bR1D qEL1JgSFbd9YR6B3+Z87O1V16CWjPhPe X-Google-Smtp-Source: AGHT+IFZnL0+bJFVTkL8YnbJPonvdMeWIW2tBeoi/pmAtih3evTSdKFPj5YogL3HK+ZLXPIM8Jrk8w== X-Received: by 2002:a05:6358:5398:b0:175:b906:8c87 with SMTP id z24-20020a056358539800b00175b9068c87mr7650557rwe.21.1705516534518; Wed, 17 Jan 2024 10:35:34 -0800 (PST) Received: from dianders.sjc.corp.google.com ([2620:15c:9d:2:bcd0:3985:867:5ea4]) by smtp.gmail.com with ESMTPSA id ko18-20020a056a00461200b006dab0d72cd0sm1762215pfb.214.2024.01.17.10.35.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Jan 2024 10:35:34 -0800 (PST) From: Douglas Anderson To: dri-devel@lists.freedesktop.org Cc: Hsin-Yi Wang , Douglas Anderson , Andrzej Hajda , Daniel Vetter , David Airlie , Jernej Skrabec , Jonas Karlman , Laurent Pinchart , Maarten Lankhorst , Maxime Ripard , Neil Armstrong , Pin-yen Lin , Robert Foss , Thomas Zimmermann , linux-kernel@vger.kernel.org Subject: [PATCH] drm/bridge: parade-ps8640: Make sure we drop the AUX mutex in the error case Date: Wed, 17 Jan 2024 10:35:03 -0800 Message-ID: <20240117103502.1.Ib726a0184913925efc7e99c4d4fc801982e1bc24@changeid> X-Mailer: git-send-email 2.43.0.381.gb435a96ce8-goog Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" After commit 26db46bc9c67 ("drm/bridge: parade-ps8640: Ensure bridge is suspended in .post_disable()"), if we hit the error case in ps8640_aux_transfer() then we return without dropping the mutex. Fix this oversight. Fixes: 26db46bc9c67 ("drm/bridge: parade-ps8640: Ensure bridge is suspended= in .post_disable()") Signed-off-by: Douglas Anderson Reviewed-by: Hsin-Yi Wang --- Sorry for missing this in my review! :( Given that this is really simple and I'd rather the buggy commit not be there for long, if I can get a quick Reviewed-by tag on this patch I'll land it without the typical stewing period. drivers/gpu/drm/bridge/parade-ps8640.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridg= e/parade-ps8640.c index 166bfc725ef4..14d4dcf239da 100644 --- a/drivers/gpu/drm/bridge/parade-ps8640.c +++ b/drivers/gpu/drm/bridge/parade-ps8640.c @@ -351,11 +351,13 @@ static ssize_t ps8640_aux_transfer(struct drm_dp_aux = *aux, ret =3D _ps8640_wait_hpd_asserted(ps_bridge, 200 * 1000); if (ret) { pm_runtime_put_sync_suspend(dev); - return ret; + goto exit; } ret =3D ps8640_aux_transfer_msg(aux, msg); pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); + +exit: mutex_unlock(&ps_bridge->aux_lock); =20 return ret; --=20 2.43.0.381.gb435a96ce8-goog