| From b410a628fe6b130f79fcb045b8bb567c10c124cd Mon Sep 17 00:00:00 2001 |
| From: Andrey Pronin <apronin@chromium.org> |
| Date: Wed, 13 Jul 2016 13:05:00 -0700 |
| Subject: [PATCH] FROMLIST: tpm_tis_spi: add max xfer size |
| |
| 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. |
| |
| BUG=chrome-os-partner:52019 |
| TEST=Boot on kevin, verify that trunksd and tpmc work |
| |
| (am from https://patchwork.kernel.org/patch/9250647/) |
| |
| Change-Id: I342732e676e78976d1439dba9b58551217161d24 |
| Signed-off-by: Andrey Pronin <apronin@chromium.org> |
| Reviewed-on: https://chromium-review.googlesource.com/362178 |
| Reviewed-by: Dmitry Torokhov <dtor@chromium.org> |
| --- |
| drivers/char/tpm/tpm_tis_spi_main.c | 1 + |
| 1 file changed, 1 insertion(+) |
| |
| diff --git a/drivers/char/tpm/tpm_tis_spi_main.c b/drivers/char/tpm/tpm_tis_spi_main.c |
| index a0963a3e92bdd86da6627412eeff1e0b8a00aa6a..8ae435cbf05146c4c5ed819c3d66ac0988d4eecb 100644 |
| --- a/drivers/char/tpm/tpm_tis_spi_main.c |
| +++ b/drivers/char/tpm/tpm_tis_spi_main.c |
| @@ -167,6 +167,7 @@ int tpm_tis_spi_init(struct spi_device *spi, struct tpm_tis_spi_phy *phy, |
| static const struct tpm_tis_phy_ops tpm_spi_phy_ops = { |
| .read_bytes = tpm_tis_spi_read_bytes, |
| .write_bytes = tpm_tis_spi_write_bytes, |
| + .max_xfer_size = MAX_SPI_FRAMESIZE, |
| }; |
| |
| static int tpm_tis_spi_probe(struct spi_device *dev) |
| -- |
| 2.38.1.584.g0f3c55d4c2-goog |
| |
