linux/include/linux/tpm.h
Jason Gunthorpe 1cd6ecaa75 tpm: Provide a generic means to override the chip returned timeouts
commit 8e54caf407 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
2014-09-17 09:21:52 -07:00

67 lines
1.9 KiB