From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Boyd Subject: [PATCH 3/8] tpm_tis_spi: add max xfer size Date: Thu, 13 Jun 2019 11:09:26 -0700 Message-ID: <20190613180931.65445-4-swboyd@chromium.org> References: <20190613180931.65445-1-swboyd@chromium.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190613180931.65445-1-swboyd@chromium.org> Sender: linux-kernel-owner@vger.kernel.org To: Peter Huewe , Jarkko Sakkinen Cc: Andrey Pronin , linux-kernel@vger.kernel.org, Jason Gunthorpe , Arnd Bergmann , Greg Kroah-Hartman , linux-integrity@vger.kernel.org, devicetree@vger.kernel.org, Duncan Laurie , Guenter Roeck , Dmitry Torokhov List-Id: devicetree@vger.kernel.org From: Andrey Pronin 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 Reviewed-by: Dmitry Torokhov Reviewed-by: Jarkko Sakkinen Signed-off-by: Stephen Boyd --- This is a resend of https://lkml.kernel.org/r/1469677797-74304-3-git-send-email-apronin@chromium.org 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 9914f6973463..0fdd3966a3b3 100644 --- a/drivers/char/tpm/tpm_tis_spi.c +++ b/drivers/char/tpm/tpm_tis_spi.c @@ -194,6 +194,7 @@ 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) -- Sent by a computer through tubes