linux-toradex.git/drivers/char/tpm, branch v3.3.2

TPM: Zero buffer whole after copying to userspace

2012-04-02T17:31:54+00:00

commit 3ab1aff89477dafb1aaeafe8c8669114a02b7226 upstream.

Commit 3321c07ae5068568cd61ac9f4ba749006a7185c9 correctly clears the TPM
buffer if the user specified read length is >= the TPM buffer length. However,
if the user specified read length is < the TPM buffer length, then part of the
TPM buffer is left uncleared.

Reported-by: Seth Forshee 
Cc: Debora Velarde 
Cc: Rajiv Andrade 
Cc: Marcel Selhorst 
Cc: tpmdd-devel@lists.sourceforge.net
Signed-off-by: Tim Gardner 
Signed-off-by: Rajiv Andrade 
Signed-off-by: Greg Kroah-Hartman

ima: fix Kconfig dependencies

2012-04-02T17:31:53+00:00

commit f4a0391dfa91155bd961673b31eb42d9d45c799d upstream.

Fix the following build warning:
warning: (IMA) selects TCG_TPM which has unmet direct dependencies
(HAS_IOMEM && EXPERIMENTAL)

Suggested-by: Rajiv Andrade 
Signed-off-by: Fabio Estevam 
Signed-off-by: Rajiv Andrade 
Signed-off-by: Mimi Zohar 
Signed-off-by: Greg Kroah-Hartman

tpm: fix (ACPI S3) suspend regression

2012-01-18T23:50:17+00:00

This patch fixes an (ACPI S3) suspend regression introduced in commit
68d6e6713fcb ("tpm: Introduce function to poll for result of self test")
and occurring with an Infineon TPM and tpm_tis and tpm_infineon drivers
active.

The suspend problem occurred if the TPM was disabled and/or deactivated
and therefore the TPM_PCRRead checking the result of the (asynchronous)
self test returned an error code which then caused the tpm_tis driver to
become inactive and this then seemed to have negatively influenced the
suspend support by the tpm_infineon driver...  Besides that the tpm_tis
drive may stay active even if the TPM is disabled and/or deactivated.

Signed-off-by: Stefan Berger 
Tested-by: Rafael J. Wysocki 
Acked-by: Rajiv Andrade 
Signed-off-by: Linus Torvalds

module_param: make bool parameters really bool (drivers & misc)

2012-01-12T23:02:20+00:00

module_param(bool) used to counter-intuitively take an int.  In
fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy
trick.

It's time to remove the int/unsigned int option.  For this version
it'll simply give a warning, but it'll break next kernel version.

Acked-by: Mauro Carvalho Chehab 
Signed-off-by: Rusty Russell

Merge branch 'for-james' of git://github.com/srajiv/tpm into next

2011-11-16T23:08:37+00:00

TPM: fix transmit_cmd error logic

2011-11-16T11:57:11+00:00

It's incorrect to assume that buffers returned by the TPM
10 bytes long are always error reports. This patches
parses the error field in its header instead. The error report
is now being printed using dev_err() instead of dev_dbg(), making
it easier for users to provide more detailed bug reports.

Signed-off-by: Rajiv Andrade

TPM: NSC and TIS drivers X86 dependency fix

2011-11-16T11:45:07+00:00

A previous commit removed its PNP dependency, that in fact wasn't
necessary, but also allowed it be built for other architectures not
supported by it. This then caused kernel oops on PPC based machines.
I'm placing a x86 dependency back correctly.

Signed-off-by: Rajiv Andrade

TPM: Export wait_for_stat for other vendor specific drivers

2011-11-16T11:44:55+00:00

Moved wait_for_stat to tpm.c so that other drivers can use it.
Also renamed it to avoid future namespace conflicts.

Signed-off-by: Rajiv Andrade

TPM: Use vendor specific function for status probe

2011-11-16T11:43:50+00:00

Moved from using tpm_tis_status() to the vendor specific
one in wait_for_stat(). This way other TPM drivers can use it
instead of reimplementing another.

Signed-off-by: Rajiv Andrade

tpm_tis: add delay after aborting command

2011-11-16T11:43:03+00:00

This patch adds a delay after aborting a command. Some TPMs need
this and will not process the subsequent command correctly otherwise.

Signed-off-by: Stefan Berger