From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 9FF85145A03; Thu, 13 Feb 2025 15:21:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739460109; cv=none; b=Y56O2gKNS2c09CaLGPBfuevqmGGqqrFdSHsh/XdIt8+DaRtLouRihMAB6khkz88e4PvZ5eK7dZ8Z3ERa6olYSogKEQWmA1gXKiUiFXOISCYrdUJlebhJmCl7UkxrL27WmTdxdU8enhsFJ/TI6cPK28KLvTN9QrEvDd8YA+eRt2I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739460109; c=relaxed/simple; bh=Wol0u8ZIWi510SVpHkhHM3fjU4o34muiAc01cJh8dFY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eoOtIZQg8wWD5+gHuvMYitnsoRDshurn4gnaP+oguCNtFOP9Uu+hLg/bEFCzQ0JCgofZ150j4WVYXOLgm9Zjfma5nCw2W/G5wksfCiuKXFZC91PrIi+WLxireBUY41puxONmC1JMzByx5FOc6LrDc4l8QfEeXV/t3ctQQI6eeWw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=a9R0FUnb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="a9R0FUnb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 11636C4CED1; Thu, 13 Feb 2025 15:21:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1739460109; bh=Wol0u8ZIWi510SVpHkhHM3fjU4o34muiAc01cJh8dFY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a9R0FUnbO7KIbP+1y8EQgrpndrAS8Y2GgdfMnIHS7puHVx54HgMmlf1UGKp5S9NSH ab5sjPDKKKUl4BL6pX0NG2aMKw5luMW740XZLuAbqoK1C1GybYeEr+NJuGrVbyqQya w75X1jXR35WiApsl4oVgNRAjlMB45Nf8SroYsyMg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Maxime Ripard , Dmitry Baryshkov , Sasha Levin Subject: [PATCH 6.6 018/273] drm/radeon: use eld_mutex to protect access to connector->eld Date: Thu, 13 Feb 2025 15:26:30 +0100 Message-ID: <20250213142408.083839814@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250213142407.354217048@linuxfoundation.org> References: <20250213142407.354217048@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dmitry Baryshkov [ Upstream commit b54c14f82428c8a602392d4cae1958a71a578132 ] Reading access to connector->eld can happen at the same time the drm_edid_to_eld() updates the data. Take the newly added eld_mutex in order to protect connector->eld from concurrent access. Reviewed-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20241206-drm-connector-eld-mutex-v2-8-c9bce1ee8bea@linaro.org Signed-off-by: Dmitry Baryshkov Signed-off-by: Sasha Levin --- drivers/gpu/drm/radeon/radeon_audio.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_audio.c b/drivers/gpu/drm/radeon/radeon_audio.c index fc22fe709b9c1..da37a827337bc 100644 --- a/drivers/gpu/drm/radeon/radeon_audio.c +++ b/drivers/gpu/drm/radeon/radeon_audio.c @@ -773,8 +773,10 @@ static int radeon_audio_component_get_eld(struct device *kdev, int port, if (!dig->pin || dig->pin->id != port) continue; *enabled = true; + mutex_lock(&connector->eld_mutex); ret = drm_eld_size(connector->eld); memcpy(buf, connector->eld, min(max_bytes, ret)); + mutex_unlock(&connector->eld_mutex); break; } -- 2.39.5