Patch "tpm_tis_spi: Abort transfer when too many wait states are signaled" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

tpm_tis_spi: Abort transfer when too many wait states are signaled

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
tpm_tis_spi-abort-transfer-when-too-many-wait-states-are-signaled.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Peter Huewe <[email protected]>
Date: Thu, 2 Mar 2017 13:03:12 +0000
Subject: tpm_tis_spi: Abort transfer when too many wait states are signaled

From: Peter Huewe <[email protected]>

commit 975094ddc369a32f27210248bdd9bbd153061b00 upstream.

Abort the transfer with ETIMEDOUT when the TPM signals more than TPM_RETRY wait states. Continuing with the transfer in this state will only lead to arbitrary failures in other parts of the code.

---
 drivers/char/tpm/tpm_tis_spi.c |    5 +++++
 1 file changed, 5 insertions(+)

@@ -102,6 +102,11 @@ static int tpm_tis_spi_transfer(struct t
 			goto exit;
 	}
 
+	if (i == TPM_RETRY) {
+		ret = -ETIMEDOUT;
+		goto exit;
+	}
+
 	spi_xfer.cs_change = 0;
 	spi_xfer.len = len;
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/tpm_tis_spi-abort-transfer-when-too-many-wait-states-are-signaled.patch queue-4.9/tpm_tis_spi-remove-limitation-of-transfers-to-max_spi_framesize-bytes.patch queue-4.9/tpm_tis_core-choose-appropriate-timeout-for-reading-burstcount.patch queue-4.9/tpm_tis_spi-add-small-delay-after-last-transfer.patch queue-4.9/tpm_tis_spi-check-correct-byte-for-wait-state-indicator.patch queue-4.9/tpm_tis_spi-use-single-function-to-transfer-data.patch