linux-toradex.git/drivers/char/tpm, branch v4.9.20

tpm_tis: fix the error handling of init_tis()

2017-03-12T05:41:43+00:00

commit 5939eaf4f9d432586dd2cdeea778506471e8088e upstream.

Add the missing platform_driver_unregister() and remove the duplicate
platform_device_unregister(force_pdev) in the error handling case.

Fixes: 00194826e6be ("tpm_tis: Clean up the force=1 module parameter")
Signed-off-by: Wei Yongjun 
Reviewed-by: Jason Gunthorpe 
Reviewed-by: Jarkko Sakkinen 
Signed-off-by: Jarkko Sakkinen 
Signed-off-by: Greg Kroah-Hartman

tpm_tis: Check return values from get_burstcount.

2017-01-12T10:39:38+00:00

commit 26a137e31ffe6fbfdb008554a8d9b3d55bd5c86e upstream.

If the TPM we're connecting to uses a static burst count, it will report
a burst count of zero throughout the response read. However, get_burstcount
assumes that a response of zero indicates that the TPM is not ready to
receive more data. In this case, it returns a negative error code, which
is passed on to tpm_tis_{write,read}_bytes as a u16, causing
them to read/write far too many bytes.

This patch checks for negative return codes and bails out from recv_data
and tpm_tis_send_data.

Fixes: 1107d065fdf1 (tpm_tis: Introduce intermediate layer for TPM access)
Signed-off-by: Josh Zimmerman 
Reviewed-by: Jarkko Sakkinen 
Signed-off-by: Jarkko Sakkinen 
Signed-off-by: Greg Kroah-Hartman

tpm xen: Remove bogus tpm_chip_unregister

2017-01-06T09:40:17+00:00

commit 1f0f30e404b3d8f4597a2d9b77fba55452f8fd0e upstream.

tpm_chip_unregister can only be called after tpm_chip_register.
devm manages the allocation so no unwind is needed here.

Fixes: afb5abc262e96 ("tpm: two-phase chip management functions")
Reviewed-by: Jarkko Sakkinen 
Signed-off-by: Jarkko Sakkinen 
Signed-off-by: Greg Kroah-Hartman

tpm: remove invalid min length check from tpm_do_selftest()

2016-10-31T15:15:27+00:00

Removal of this check was not properly amended to the original commit.

Cc: stable@vger.kernel.org
Fixes: 0c541332231e ("tpm: use tpm_pcr_read_dev() in tpm_do_selftest()")
Signed-off-by: Jarkko Sakkinen 
Signed-off-by: James Morris

Revert "tpm/tpm_crb: implement tpm crb idle state"

2016-09-27T09:02:13+00:00

This reverts commit e17acbbb69d30836a8c12e2c09bbefab8656693e.

Signed-off-by: Jarkko Sakkinen

Revert "tmp/tpm_crb: fix Intel PTT hw bug during idle state"

2016-09-27T09:01:43+00:00

This reverts commit 9514ff1961c6f0f5983ba72d94f384bc13e0d4a1.

Signed-off-by: Jarkko Sakkinen

Revert "tpm/tpm_crb: open code the crb_init into acpi_add"

2016-09-27T09:01:25+00:00

This reverts commit 0c22db435bf79d3cf3089df7ff198d4867df3c27.

Signed-off-by: Jarkko Sakkinen

Revert "tmp/tpm_crb: implement runtime pm for tpm_crb"

2016-09-27T09:00:13+00:00

This reverts commit e350e24694e447e6ab7312fffae5ca31a0bb5165.

Signed-off-by: Jarkko Sakkinen

tmp/tpm_crb: implement runtime pm for tpm_crb

2016-09-16T12:51:22+00:00

Utilize runtime_pm for driving tpm crb idle states.
The framework calls cmd_ready from the pm_runtime_resume handler
and go idle from the pm_runtime_suspend handler.
The TPM framework should wake the device before transmit and receive.
In case the runtime_pm framework is not enabled, the device will be in
ready state.

[jarkko.sakkinen@linux.intel.com: changed pm_runtime_put_sync()
 to pm_runtime_put()]

Signed-off-by: Tomas Winkler 
Reviewed-by: Jarkko Sakkinen 
Tested-by: Jarkko Sakkinen

tpm/tpm_crb: open code the crb_init into acpi_add

2016-09-16T12:47:52+00:00

This is preparation step for implementing tpm crb
runtime pm. We need to have tpm chip allocated
and populated before we access the runtime handlers.

Signed-off-by: Tomas Winkler 
Tested-by: Jarkko Sakkinen