From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 28067C4CED1 for ; Thu, 3 Oct 2019 17:09:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E573320673 for ; Thu, 3 Oct 2019 17:09:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570122550; bh=A/fluV88cdCtFiDoTo2oHXuBD3ua79iA+SvIybnQ9+4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=AwQCtO2wkpoSTHCbNhbWXDLZAqujEWJWHksLFUAkgoIaMiW7HYOwYGa2GvQtFf+CC Q83Ho7XmXkw+MhYR/umBAhCWYZvKO9MKyEusZX4PVSJ3jU16AXd5lVjK99M5wHJ5iv sQ6BVLOitgBWRNOtsquJiGjL7JzTWpc/zYvF0+hc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404190AbfJCQeb (ORCPT ); Thu, 3 Oct 2019 12:34:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:43090 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404166AbfJCQe2 (ORCPT ); Thu, 3 Oct 2019 12:34:28 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 570C22133F; Thu, 3 Oct 2019 16:34:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570120467; bh=A/fluV88cdCtFiDoTo2oHXuBD3ua79iA+SvIybnQ9+4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cIPpuooplxDAHMa2j98h++LGteMflphKTh4YV65o3CmNDfmsG/o7LQ+9Hj6V3UqjP ECPCvDpCzgEWaO2tFrmj/Ntws6Sk6ugf7C4xAjSoXnPxsGNRCYw4K1TPUklgQNqbxT JYn8PT2gw0LGIFpXXLCaz7KXOQ1SjaZtXoZ8Yrng= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, linux-stable@vger.kernel.org, Stefan Berger , Jarkko Sakkinen Subject: [PATCH 5.2 232/313] tpm_tis_core: Turn on the TPM before probing IRQs Date: Thu, 3 Oct 2019 17:53:30 +0200 Message-Id: <20191003154555.839747700@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191003154533.590915454@linuxfoundation.org> References: <20191003154533.590915454@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Stefan Berger commit 5b359c7c43727e624eac3efc7ad21bd2defea161 upstream. The interrupt probing sequence in tpm_tis_core cannot obviously run with the TPM power gated. Power on the TPM with tpm_chip_start() before probing IRQ's. Turn it off once the probing is complete. Cc: linux-stable@vger.kernel.org Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()") Signed-off-by: Stefan Berger Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen Signed-off-by: Greg Kroah-Hartman --- drivers/char/tpm/tpm_tis_core.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -980,6 +980,7 @@ int tpm_tis_core_init(struct device *dev goto out_err; } + tpm_chip_start(chip); if (irq) { tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED, irq); @@ -989,6 +990,7 @@ int tpm_tis_core_init(struct device *dev } else { tpm_tis_probe_irq(chip, intmask); } + tpm_chip_stop(chip); } rc = tpm_chip_register(chip);