linux-toradex.git/drivers/char/tpm, branch v4.1.10

tpm, tpm_crb: fail when TPM2 ACPI table contents look corrupted

2015-08-03T16:29:11+00:00

commit b371616b8537d6450ebca0819defbf53452bebf3 upstream.

At least some versions of AMI BIOS have corrupted contents in the TPM2
ACPI table and namely the physical address of the control area is set to
zero.

This patch changes the driver to fail gracefully  when we observe a zero
address instead of continuing to ioremap.

Signed-off-by: Jarkko Sakkinen 
Reviewed-by: Peter Huewe 
Signed-off-by: Peter Huewe 
Signed-off-by: Greg Kroah-Hartman

tpm: Fix initialization of the cdev

2015-08-03T16:29:11+00:00

commit ba0ef85479c46a2ab354c2220bdb6152f7f4baf3 upstream.

When a cdev is contained in a dynamic structure the cdev parent kobj
should be set to the kobj that controls the lifetime of the enclosing
structure. In TPM's case this is the embedded struct device.

Also, cdev_init 0's the whole structure, so all sets must be after,
not before. This fixes module ref counting and cdev.

Fixes: 313d21eeab92 ("tpm: device class for tpm")
Signed-off-by: Jason Gunthorpe 
Reviewed-by: Dmitry Torokhov 
Reviewed-by: Jarkko Sakkinen 
Tested-by: Jarkko Sakkinen 
Signed-off-by: Peter Huewe 
Signed-off-by: Greg Kroah-Hartman

vTPM: set virtual device before passing to ibmvtpm_reset_crq

2015-08-03T16:29:11+00:00

commit 9d75f08946e8485109458ccf16f714697c207f41 upstream.

tpm_ibmvtpm_probe() calls ibmvtpm_reset_crq(ibmvtpm) without having yet
set the virtual device in the ibmvtpm structure. So in ibmvtpm_reset_crq,
the phype call contains empty unit addresses, ibmvtpm->vdev->unit_address.

Signed-off-by: Hon Ching(Vicky) Lo 
Signed-off-by: Joy Latten 
Reviewed-by: Ashley Lai 
Fixes: 132f76294744 ("drivers/char/tpm: Add new device driver to support IBM vTPM")
Signed-off-by: Peter Huewe 
Signed-off-by: Greg Kroah-Hartman

tpm, tpm_crb: fix le64_to_cpu conversions in crb_acpi_add()

2015-08-03T16:29:11+00:00

commit 49afd7289bd937401c5f7faa193054bc3c41dad6 upstream.

le64_to_cpu() was applied twice to the physical addresses read from the
control area. This hasn't shown any visible regressions because CRB
driver has been tested only on the little endian platofrms so far.

Reported-by: Matt Fleming 
Signed-off-by: Jarkko Sakkinen 
Reviewed-By: Jason Gunthorpe 
Fixes: 30fc8d138e91 ("tpm: TPM 2.0 CRB Interface")
Signed-off-by: Peter Huewe 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'stable/for-linus-4.1-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

2015-04-16T19:01:03+00:00

Pull xen features and fixes from David Vrabel:

 - use a single source list of hypercalls, generating other tables etc.
   at build time.

 - add a "Xen PV" APIC driver to support >255 VCPUs in PV guests.

 - significant performance improve to guest save/restore/migration.

 - scsiback/front save/restore support.

 - infrastructure for multi-page xenbus rings.

 - misc fixes.

* tag 'stable/for-linus-4.1-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/pci: Try harder to get PXM information for Xen
  xenbus_client: Extend interface to support multi-page ring
  xen-pciback: also support disabling of bus-mastering and memory-write-invalidate
  xen: support suspend/resume in pvscsi frontend
  xen: scsiback: add LUN of restored domain
  xen-scsiback: define a pr_fmt macro with xen-pvscsi
  xen/mce: fix up xen_late_init_mcelog() error handling
  xen/privcmd: improve performance of MMAPBATCH_V2
  xen: unify foreign GFN map/unmap for auto-xlated physmap guests
  x86/xen/apic: WARN with details.
  x86/xen: Provide a "Xen PV" APIC driver to support >255 VCPUs
  xen/pciback: Don't print scary messages when unsupported by hypervisor.
  xen: use generated hypercall symbols in arch/x86/xen/xen-head.S
  xen: use generated hypervisor symbols in arch/x86/xen/trace.c
  xen: synchronize include/xen/interface/xen.h with xen
  xen: build infrastructure for generating hypercall depending symbols
  xen: balloon: Use static attribute groups for sysfs entries
  xen: pcpu: Use static attribute groups for sysfs entry

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

2015-04-15T18:08:27+00:00

Pull security subsystem updates from James Morris:
 "Highlights for this window:

   - improved AVC hashing for SELinux by John Brooks and Stephen Smalley

   - addition of an unconfined label to Smack

   - Smack documentation update

   - TPM driver updates"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (28 commits)
  lsm: copy comm before calling audit_log to avoid race in string printing
  tomoyo: Do not generate empty policy files
  tomoyo: Use if_changed when generating builtin-policy.h
  tomoyo: Use bin2c to generate builtin-policy.h
  selinux: increase avtab max buckets
  selinux: Use a better hash function for avtab
  selinux: convert avtab hash table to flex_array
  selinux: reconcile security_netlbl_secattr_to_sid() and mls_import_netlbl_cat()
  selinux: remove unnecessary pointer reassignment
  Smack: Updates for Smack documentation
  tpm/st33zp24/spi: Add missing device table for spi phy.
  tpm/st33zp24: Add proper wait for ordinal duration in case of irq mode
  smack: Fix gcc warning from unused smack_syslog_lock mutex in smackfs.c
  Smack: Allow an unconfined label in bringup mode
  Smack: getting the Smack security context of keys
  Smack: Assign smack_known_web as default smk_in label for kernel thread's socket
  tpm/tpm_infineon: Use struct dev_pm_ops for power management
  MAINTAINERS: Add Jason as designated reviewer for TPM
  tpm: Update KConfig text to include TPM2.0 FIFO chips
  tpm/st33zp24/dts/st33zp24-spi: Add dts documentation for st33zp24 spi phy
  ...

xenbus_client: Extend interface to support multi-page ring

2015-04-15T09:56:47+00:00

Originally Xen PV drivers only use single-page ring to pass along
information. This might limit the throughput between frontend and
backend.

The patch extends Xenbus driver to support multi-page ring, which in
general should improve throughput if ring is the bottleneck. Changes to
various frontend / backend to adapt to the new interface are also
included.

Affected Xen drivers:
* blkfront/back
* netfront/back
* pcifront/back
* scsifront/back
* vtpmfront

The interface is documented, as before, in xenbus_client.c.

Signed-off-by: Wei Liu 
Signed-off-by: Paul Durrant 
Signed-off-by: Bob Liu 
Cc: Konrad Wilk 
Cc: Boris Ostrovsky 
Signed-off-by: David Vrabel

tpm/st33zp24/spi: Add missing device table for spi phy.

2015-03-27T01:50:43+00:00

MODULE_DEVICE_TABLE is missing in spi phy in case CONFIG_OF is not set.

Reviewed-by: Jason Gunthorpe 
Signed-off-by: Christophe Ricard 
Signed-off-by: Peter Huewe

tpm/st33zp24: Add proper wait for ordinal duration in case of irq mode

2015-03-27T01:50:34+00:00

In case the driver is configured to use irq, we are not waiting the answer
for a duration period to see the DATA_AVAIL status bit to raise but at
maximum timeout_c. This may result in critical failure as we will
not wait long enough for the command completion.

Reviewed-by: Jason Gunthorpe 
Signed-off-by: Christophe Ricard 
Fixes: bf38b8710892 ("tpm/tpm_i2c_stm_st33: Split tpm_i2c_tpm_st33 in 2
layers (core + phy)")
Reviewed-by: Peter Huewe 
Signed-off-by: Peter Huewe

tpm/tpm_infineon: Use struct dev_pm_ops for power management

2015-03-18T21:43:08+00:00

Make the tpm_infineon driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct pnp_driver.

This allows the driver to use tpm_pm_suspend() as its suspend
callback directly, so we can remove the duplicated savestate code.

Signed-off-by: Peter Huewe