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 199AD13ADF for ; Mon, 8 May 2023 11:01:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4AD65C433D2; Mon, 8 May 2023 11:01:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683543698; bh=xzlrzZkuLIcP7YhZu2SlQaZL/uCQ6swPFrmmflrvv8c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=10Vwh97PNiGDSxOTlhqOehwB3YIWXhpoYfHzPs/NZdO47v9dRqlWt2CEcnm5CGGUm 0KrJfJC6WqqshjBbzolk+iGseUTIhDCgAhfeOxNxAlVq50tmqFTp2d3uBhje4HTaDv B+E3DEfqCQe397MtlWGKNPVfaFDA1zmw/vQ8tNNg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Lino Sanfilippo , Jarkko Sakkinen , Sasha Levin Subject: [PATCH 6.3 145/694] tpm, tpm_tis: Claim locality when interrupts are reenabled on resume Date: Mon, 8 May 2023 11:39:40 +0200 Message-Id: <20230508094437.160811581@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094432.603705160@linuxfoundation.org> References: <20230508094432.603705160@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Lino Sanfilippo [ Upstream commit 955df4f87760b3bb2af253d3fbb12fb712b3ffa6 ] In tpm_tis_resume() make sure that the locality has been claimed when tpm_tis_reenable_interrupts() is called. Otherwise the writings to the register might not have any effect. Fixes: 45baa1d1fa39 ("tpm_tis: Re-enable interrupts upon (S3) resume") Signed-off-by: Lino Sanfilippo Tested-by: Jarkko Sakkinen Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen Signed-off-by: Sasha Levin --- drivers/char/tpm/tpm_tis_core.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index c5fef63c6179d..eecfbd7e97867 100644 --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -1191,28 +1191,27 @@ int tpm_tis_resume(struct device *dev) struct tpm_chip *chip = dev_get_drvdata(dev); int ret; + ret = tpm_tis_request_locality(chip, 0); + if (ret < 0) + return ret; + if (chip->flags & TPM_CHIP_FLAG_IRQ) tpm_tis_reenable_interrupts(chip); ret = tpm_pm_resume(dev); if (ret) - return ret; + goto out; /* * TPM 1.2 requires self-test on resume. This function actually returns * an error code but for unknown reason it isn't handled. */ - if (!(chip->flags & TPM_CHIP_FLAG_TPM2)) { - ret = tpm_tis_request_locality(chip, 0); - if (ret < 0) - return ret; - + if (!(chip->flags & TPM_CHIP_FLAG_TPM2)) tpm1_do_selftest(chip); +out: + tpm_tis_relinquish_locality(chip, 0); - tpm_tis_relinquish_locality(chip, 0); - } - - return 0; + return ret; } EXPORT_SYMBOL_GPL(tpm_tis_resume); #endif -- 2.39.2