linux-toradex.git/drivers/char/tpm/tpm_vtpm_proxy.c, branch v5.9

compat_ioctl: move drivers to compat_ptr_ioctl

2019-10-23T15:23:43+00:00

Each of these drivers has a copy of the same trivial helper function to
convert the pointer argument and then call the native ioctl handler.

We now have a generic implementation of that, so use it.

Acked-by: Greg Kroah-Hartman 
Acked-by: Michael S. Tsirkin 
Acked-by: David S. Miller 
Acked-by: Jarkko Sakkinen 
Reviewed-by: Jarkko Sakkinen 
Reviewed-by: Jason Gunthorpe 
Reviewed-by: Jiri Kosina 
Reviewed-by: Stefan Hajnoczi 
Reviewed-by: Cornelia Huck 
Signed-off-by: Arnd Bergmann

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05T15:37:17+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation version 2 of the license

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 315 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Reviewed-by: Armijn Hemel 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de
Signed-off-by: Greg Kroah-Hartman

tpm: remove @flags from tpm_transmit()

2019-02-13T07:48:46+00:00

Remove @flags from tpm_transmit() API. It is no longer used for
anything.

Signed-off-by: Jarkko Sakkinen 
Reviewed-by: Stefan Berger 
Tested-by: Stefan Berger 
Reviewed-by: Jerry Snitselaar 
Reviewed-by: James Bottomley 
Tested-by: Alexander Steffen

tpm: take TPM chip power gating out of tpm_transmit()

2019-02-13T07:48:40+00:00

Call tpm_chip_start() and tpm_chip_stop() in

* tpm_chip_register()
* tpm_class_shutdown()
* tpm_del_char_device()
* tpm_pm_suspend()
* tpm_try_get_ops() and tpm_put_ops()
* tpm2_del_space()

And remove these calls from tpm_transmit(). The core reason for this
change is that in tpm_vtpm_proxy a locality change requires a virtual
TPM command (a command made up just for that driver).

The consequence of this is that this commit removes the remaining nested
calls.

Signed-off-by: Jarkko Sakkinen 
Reviewed-by: Stefan Berger 
Tested-by: Stefan Berger 
Reviewed-by: Jerry Snitselaar 
Reviewed-by: James Bottomley 
Tested-by: Alexander Steffen

tpm: remove @space from tpm_transmit()

2019-02-13T07:48:12+00:00

Remove @space from tpm_transmit() API` in order to completely remove the
bound between low-level transmission functionality and TPM spaces. The
only real dependency existing is the amount of data saved before trying
to send a command to the TPM.

It doesn't really matter if we save always a bit more than needed so
this commit changes the amount saved always to be the size of the TPM
header and three handles.

Cc: James Bottomley 
Signed-off-by: Jarkko Sakkinen 
Reviewed-by: Stefan Berger 
Tested-by: Stefan Berger 
Reviewed-by: Jerry Snitselaar 
Reviewed-by: James Bottomley 
Tested-by: Alexander Steffen

tpm: declare struct tpm_header

2019-02-13T07:47:37+00:00

Declare struct tpm_header that replaces struct tpm_input_header and
struct tpm_output_header.

Signed-off-by: Jarkko Sakkinen 
Reviewed-by: Stefan Berger 
Tested-by: Stefan Berger 
Reviewed-by: Jerry Snitselaar 
Reviewed-by: James Bottomley 
Tested-by: Alexander Steffen

tpm: use tpm_buf in tpm_transmit_cmd() as the IO parameter

2019-02-13T07:47:01+00:00

Since we pass an initialized struct tpm_buf instance in every call site
now, it is cleaner to pass that directly to the tpm_transmit_cmd() as
the TPM command/response buffer.

Fine-tune a little bit tpm_transmit() and tpm_transmit_cmd() comments
while doing this.

Signed-off-by: Jarkko Sakkinen 
Reviewed-by: Stefan Berger 
Tested-by: Stefan Berger 
Reviewed-by: Jerry Snitselaar 
Reviewed-by: James Bottomley 
Tested-by: Alexander Steffen

tpm: Unify the send callback behaviour

2019-02-13T07:46:26+00:00

The send() callback should never return length as it does not in every
driver except tpm_crb in the success case. The reason is that the main
transmit functionality only cares about whether the transmit was
successful or not and ignores the count completely.

Suggested-by: Stefan Berger 
Cc: stable@vger.kernel.org
Signed-off-by: Jarkko Sakkinen 
Reviewed-by: Stefan Berger 
Reviewed-by: Jerry Snitselaar 
Tested-by: Alexander Steffen

tpm: replace TPM_TRANSMIT_RAW with TPM_TRANSMIT_NESTED

2018-07-28T14:03:11+00:00

As TPM_TRANSMIT_RAW always requires also not to take locks for obvious
reasons (deadlock), this commit renames the flag as TPM_TRANSMIT_NESTED
and prevents taking tpm_mutex when the flag is given to tpm_transmit().

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

vfs: do bulk POLL* -> EPOLL* replacement

2018-02-11T22:34:03+00:00

This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro 
Signed-off-by: Linus Torvalds