This series fixes issues around the TPM driver interrupt handling. These issues prevent TPM chips like the SLB 9670 to work over SPI. PATCH 1: The SPI implementation of the functions to read/write to/from registers uses mutexes and thus require a sleepable context. For this reason request a threaded interrupt handler. PATCH 2: Simplify locality handling by taking the driver locality (0) at driver startup and releasing it at driver shutdown. This also fixes a warning at driver startup that is caused by a register access without prior locality request. PATCH 3: Fix and simplify the test for working interrupts. PATCH 4: Only set the interrupts which are reported as being available. With these patches applied the SLB 9670 works as expected: interrupts are detected and the transmit/receive operations are controlled by interrupt handling. The patches are based on Linux mainline V5.11 Lino Sanfilippo (4): tpm: Use a threaded interrupt handler tpm: get locality before writing to TPM chip tpm: Fix test for interrupts tpm: Only enable supported irqs drivers/char/tpm/tpm-chip.c | 10 ---- drivers/char/tpm/tpm_tis_core.c | 127 +++++++++++++++++++--------------------- drivers/char/tpm/tpm_tis_core.h | 2 +- include/linux/tpm.h | 2 +- 4 files changed, 62 insertions(+), 79 deletions(-) -- 2.7.4
