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 E84111AAA29; Thu, 13 Feb 2025 14:59:02 +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=1739458743; cv=none; b=O7X+H4G2m4o72/blXAzuCRPWQfyopvD8kdTWKHOYgqP3bR4Vr/NtGyFy9ycoJmrPAkqZYdTc8ETP8yyonp4vPcb7cw8DjsUppPFe+0eq2k/CI7N6dNxe0Zs95emFPPZRmCcUkxzf4M3BcqiF9NFY4roSH0HXWN3Zrote9+E04nY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739458743; c=relaxed/simple; bh=nYBAW0L+iWnuhGESdMBgQWb6GxKXU/+a34bMrOCXMag=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Hp5WiwNGbiyOrOmlwtrI5kSy/r/gwVdOnpSs8HvHCGZmeECF0olVVJsKlQQTRFm6uEEeoPhoh8wiZv0v5gb5hunqhcuAO7McyzNJ74SbYxGAsZa37ppDlKqGGY2kH1LHMnohp9UFfaCj2Rz1dkTibuugVq2rZCUMEPMABrg/Qbk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=LiBCSggF; 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="LiBCSggF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 50128C4CED1; Thu, 13 Feb 2025 14:59:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1739458742; bh=nYBAW0L+iWnuhGESdMBgQWb6GxKXU/+a34bMrOCXMag=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LiBCSggFtqllG4LfcjbNA+xaFGLjc8/pV5dWSZxQkTN3OiCfYdf/ihRxB4TccGmRu Za7LaFtksgeel/R16yvLKeQmVyB3YgVLRtV4OLq6Fq3D0y/DX6B0SspFdgxiRQw1hF sQCDO8jWMD7/RE97iK/nD1cr+dJsk8y20GAbsl7s= 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 6.13 033/443] drm/bridge: anx7625: use eld_mutex to protect access to connector->eld Date: Thu, 13 Feb 2025 15:23:18 +0100 Message-ID: <20250213142441.903955463@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250213142440.609878115@linuxfoundation.org> References: <20250213142440.609878115@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.13-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dmitry Baryshkov [ Upstream commit e72bf423a60afd744d13e40ab2194044a3af5217 ] 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-v2-2-c9bce1ee8bea@linaro.org Signed-off-by: Dmitry Baryshkov Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/analogix/anx7625.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c index a2675b121fe44..c036bbc92ba96 100644 --- a/drivers/gpu/drm/bridge/analogix/anx7625.c +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c @@ -2002,8 +2002,10 @@ static int anx7625_audio_get_eld(struct device *dev, void *data, memset(buf, 0, len); } else { dev_dbg(dev, "audio copy eld\n"); + mutex_lock(&ctx->connector->eld_mutex); memcpy(buf, ctx->connector->eld, min(sizeof(ctx->connector->eld), len)); + mutex_unlock(&ctx->connector->eld_mutex); } return 0; -- 2.39.5