tpm, tpm_tis: Decorate tpm_tis_gen_interrupt() with request_locality()

This is shown with Samsung Chromebook Pro (Caroline) with TPM 1.2
(SLB 9670):

[    4.324298] TPM returned invalid status
[    4.324806] WARNING: CPU: 2 PID: 1 at drivers/char/tpm/tpm_tis_core.c:275 tpm_tis_status+0x86/0x8f

Background
==========

TCG PC Client Platform TPM Profile (PTP) Specification, paragraph 6.1 FIFO
Interface Locality Usage per Register, Table 39 Register Behavior Based on
Locality Setting for FIFO - a read attempt to TPM_STS_x Registers returns
0xFF in case of lack of locality.

The fix
=======

Decorate tpm_tis_gen_interrupt() with request_locality() and
release_locality().

Cc: Laurent Bigonville <[email protected]>
Cc: James Bottomley <[email protected]>
Cc: Guenter Roeck <[email protected]>
Cc: [email protected]
Fixes: a3fbfae82b4c ("tpm: take TPM chip power gating out of tpm_transmit()")
Signed-off-by: Lukasz Majczak <[email protected]>
Signed-off-by: Jarkko Sakkinen <[email protected]>

0 files changed, 0 insertions, 0 deletions