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[tpmdd-devel,v2,2/2] tpm_tis_spi: add max xfer size

Message ID c052075083b8975e9e8bea2dfd6223e6a2e57ea6.1468981325.git.apronin@chromium.org
State New
Headers show

Commit Message

apronin@chromium.org July 20, 2016, 2:34 a.m. UTC 
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 <apronin@chromium.org>
---
 drivers/char/tpm/tpm_tis_spi.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

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)