[PATCH v5 0/5] Fixes for PMF and CCP drivers after S4

["Mario Limonciello (AMD)" <superm1@kernel.org>]

Lars Francke reported that the PMF driver fails to work afer S4 with:
  ccp 0000:c3:00.2: tee: command 0x5 timed out, disabling PSP

This is because there is a TA loaded to the TEE environment that
is lost during S4.  The TEE rings need to be reinitialized and the
TA needs to be reloaded.

This series adds those flows to the PMF and CCP drivers.

v4->v5:
 * Fix error return value in psp_restore()
 * Fix retry loop in tee_init_ring()

Mario Limonciello (AMD) (4):
  crypto: ccp - Declare PSP dead if PSP_CMD_TEE_RING_INIT fails
  crypto: ccp - Add an S4 restore flow
  crypto: ccp - Factor out ring destroy handling to a helper
  crypto: ccp - Send PSP_CMD_TEE_RING_DESTROY when PSP_CMD_TEE_RING_INIT
    fails

Shyam Sundar S K (1):
  platform/x86/amd/pmf: Prevent TEE errors after hibernate

 drivers/crypto/ccp/psp-dev.c          | 11 +++++
 drivers/crypto/ccp/sp-dev.h           |  2 +
 drivers/crypto/ccp/sp-pci.c           | 24 ++++++++++-
 drivers/crypto/ccp/tee-dev.c          | 56 ++++++++++++++++++------
 drivers/crypto/ccp/tee-dev.h          |  1 +
 drivers/platform/x86/amd/pmf/core.c   | 62 ++++++++++++++++++++++++++-
 drivers/platform/x86/amd/pmf/pmf.h    | 10 +++++
 drivers/platform/x86/amd/pmf/tee-if.c | 12 ++----
 include/linux/psp.h                   |  1 +
 9 files changed, 156 insertions(+), 23 deletions(-)

-- 
2.43.0