From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Date: Thu, 22 May 2014 00:26:44 +0000 (-0600)
Subject: tpm: Provide a generic means to override the chip returned timeouts
X-Git-Tag: v3.2.64~209
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0f7e814c5af6ce77732ec0ccf3be31ac8aa6b1c4;p=pandora-kernel.git

tpm: Provide a generic means to override the chip returned timeouts

commit 8e54caf407b98efa05409e1fee0e5381abd2b088 upstream.

Some Atmel TPMs provide completely wrong timeouts from their
TPM_CAP_PROP_TIS_TIMEOUT query. This patch detects that and returns
new correct values via a DID/VID table in the TIS driver.

Tested on ARM using an AT97SC3204T FW version 37.16

[PHuewe: without this fix these 'broken' Atmel TPMs won't function on
older kernels]
Signed-off-by: "Berg, Christopher" <Christopher.Berg@atmel.com>
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
[bwh: Backported to 3.2:
 - Adjust filename, context
 - s/chip->ops->/chip->vendor./]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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