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 6FB2326B083; Thu, 13 Feb 2025 14:57:31 +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=1739458651; cv=none; b=Z6F6YoSupS61x9HQdJgmA9wux21vzBNqD3rrHgwad6hXyqtp304KTS/F+9DuEQi1k9iCostsFJO3ZLS1IgKVjgDv0l8/jr/AuFixv5EDXbSxla2CrcazYPS/XIJlk02MLJmcfJK3amSFQQfpjA2aWcnpoQpQ/b0jRPR+Su0A9BM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739458651; c=relaxed/simple; bh=+sVJ3gv0aCWc37QVNQuXOiaFFt4xZHJw12jXeUeC7cE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fQy+JsRw59BHhXpswuymec57nIA5XCEPVzKjKrYevqZC7P+Uc87lKmuoFvOaClUSESegqo8GCGtFuHHK2+KI2NWnOA3n2TI3vV4m0Cv/frzNteUfDW9VX3Ef99RixesAKixg7qtE9XShs/W1EEPhF74LmXshjvM7NFPDwuSiwh4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=lkRa9yen; 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="lkRa9yen" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 70C51C4CED1; Thu, 13 Feb 2025 14:57:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1739458650; bh=+sVJ3gv0aCWc37QVNQuXOiaFFt4xZHJw12jXeUeC7cE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lkRa9yeny/8tPHqXIBwJjFxjq6aBSqxEO5ZXlw5a+D3cnbs/hVlgxNL6lzpbCnMjv RBlj42xsAhUbtFN+hkc8YzkI69LA3hh68CfnQPiQZNnW6U5TMnAV/00gVs6tIj0JIN jkAtt1Nt+mtfcy39HebqusOWpxVHh9Ag4WWO2Dmw= 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 6.13 040/443] drm/vc4: hdmi: use eld_mutex to protect access to connector->eld Date: Thu, 13 Feb 2025 15:23:25 +0100 Message-ID: <20250213142442.172606920@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 81a9a93b169a273ccc4a9a1ee56f17e9981d3f98 ] 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-v2-10-c9bce1ee8bea@linaro.org Signed-off-by: Dmitry Baryshkov Signed-off-by: Sasha Levin --- drivers/gpu/drm/vc4/vc4_hdmi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index e3818c48c9b8c..e86123009c905 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -2193,9 +2193,9 @@ static int vc4_hdmi_audio_get_eld(struct device *dev, void *data, struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev); struct drm_connector *connector = &vc4_hdmi->connector; - mutex_lock(&vc4_hdmi->mutex); + mutex_lock(&connector->eld_mutex); memcpy(buf, connector->eld, min(sizeof(connector->eld), len)); - mutex_unlock(&vc4_hdmi->mutex); + mutex_unlock(&connector->eld_mutex); return 0; } -- 2.39.5