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 CB27378C86 for ; Mon, 15 Apr 2024 13:38:55 +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=1713188335; cv=none; b=SOSY5qfdH2U6jE2zxY+fgcIzq4CTlnRQLR48D3rHCl8RdJexYY7Vx06TUOXoQqU5SdItpkFGqM2LEmJ0VBfrMntvsvJTVvYVU3OpdNJQMHHqL3ZouIibr6+xCnB2dtUAwdwcfldZMA+WaEzbj6+df/o8b42JGMPCJyHs0FM5O6U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713188335; c=relaxed/simple; bh=1SUh9j1zak2utz/PPpBFT6pw/S1D8+8aGUnBOV+HFIM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AJTo04XOumLVq7f9GpF9TzyiK9FSOqdfazM4dYIZtR/8qzJZJ+touDxonolXJDAWfHaBAOM5dSGxJgZUP9TncdkGRm64fHAO6Kax/qvRUizJ7QsCmbKF1u2WnfmyOqBdYCF7Yaz2eiK7l2jvhQSBOMbaklOZ+DZt7odhidmYETI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tLR6mExd; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="tLR6mExd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 91E35C2BD10; Mon, 15 Apr 2024 13:38:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713188335; bh=1SUh9j1zak2utz/PPpBFT6pw/S1D8+8aGUnBOV+HFIM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tLR6mExdxqZX6Y+eUh49BnVLGx9rE9R6WSvrxKO41IfBGPmXfDo04QWcQynSvx12O n3vTjYnhIjjhERo1+GUmkyWZXB7pUA/RrlfvHiD2JPCPnlatnoIjVwR+vE67cX9ZQn YucUtvpKPdM6yx6Eru5gJP9GjV5SQm/qKQj9l4Mhe+O/k3nUf1aDnZA0T0RibC9Zcx cEnO17IJEXwvT2wPoG2eDN9Kw4Bw0VwtHUWZR/QkW4CLfOkjxQSouIbUIsUXKM+kkR K/6elLM5SHjQpkPidlJttVcBhpfnvaiixm8h+vPip/B2Eo/+sBugKrbrtgLdOfAeNk MHIfDkU/jwxUA== From: Sasha Levin To: kernel-lts@openela.org Cc: Manivannan Sadhasivam , Lorenzo Pieralisi , stable@vger.kernel.org, Sasha Levin Subject: [PATCH 4.14-openela 033/190] PCI: qcom: Disable write access to read only registers for IP v2.3.3 Date: Mon, 15 Apr 2024 06:49:23 -0400 Message-ID: <20240415105208.3137874-34-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240415105208.3137874-1-sashal@kernel.org> References: <20240415105208.3137874-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Manivannan Sadhasivam [ Upstream commit a33d700e8eea76c62120cb3dbf5e01328f18319a ] In the post init sequence of v2.9.0, write access to read only registers are not disabled after updating the registers. Fix it by disabling the access after register update. Link: https://lore.kernel.org/r/20230619150408.8468-2-manivannan.sadhasivam@linaro.org Fixes: 5d76117f070d ("PCI: qcom: Add support for IPQ8074 PCIe controller") Signed-off-by: Manivannan Sadhasivam Signed-off-by: Lorenzo Pieralisi Cc: Signed-off-by: Sasha Levin --- drivers/pci/dwc/pcie-qcom.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/dwc/pcie-qcom.c b/drivers/pci/dwc/pcie-qcom.c index fe710f83e59bc..431bc0e4d3eec 100644 --- a/drivers/pci/dwc/pcie-qcom.c +++ b/drivers/pci/dwc/pcie-qcom.c @@ -730,6 +730,8 @@ static int qcom_pcie_get_resources_2_4_0(struct qcom_pcie *pcie) if (IS_ERR(res->phy_ahb_reset)) return PTR_ERR(res->phy_ahb_reset); + dw_pcie_dbi_ro_wr_dis(pci); + return 0; } -- 2.43.0