From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrey Pronin Subject: [PATCH v3 2/2] tpm_tis_spi: add max xfer size Date: Wed, 27 Jul 2016 20:49:57 -0700 Message-ID: <1469677797-74304-3-git-send-email-apronin@chromium.org> References: <1468546745-14646-1-git-send-email-apronin@chromium.org> <1469677797-74304-1-git-send-email-apronin@chromium.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1469677797-74304-1-git-send-email-apronin-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> In-Reply-To: <1468546745-14646-1-git-send-email-apronin-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> References: <1468546745-14646-1-git-send-email-apronin-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: tpmdd-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Jarkko Sakkinen Cc: Christophe Ricard , dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, smbarber-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, dtor-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org List-Id: tpmdd-devel@lists.sourceforge.net Reject burstcounts larger than 64 bytes reported by tpm. SPI Hardware Protocol defined in section 6.4 of TCG PTP Spec supports up to 64 bytes of data in a transaction. Signed-off-by: Andrey Pronin --- drivers/char/tpm/tpm_tis_spi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/char/tpm/tpm_tis_spi.c b/drivers/char/tpm/tpm_tis_spi.c index dbaad9c..b103373 100644 --- a/drivers/char/tpm/tpm_tis_spi.c +++ b/drivers/char/tpm/tpm_tis_spi.c @@ -206,6 +206,7 @@ static const struct tpm_tis_phy_ops tpm_spi_phy_ops = { .read16 = tpm_tis_spi_read16, .read32 = tpm_tis_spi_read32, .write32 = tpm_tis_spi_write32, + .max_xfer_size = MAX_SPI_FRAMESIZE, }; static int tpm_tis_spi_probe(struct spi_device *dev) -- 2.6.6 ------------------------------------------------------------------------------