[PATCH v4 0/3] firmware: stratix10-rsu: expose QSPI flash size and erase size from firmware

[tze.yee.ng@altera.com]

From: Tze Yee Ng <tze.yee.ng@altera.com>

This series lets user space read per-device QSPI flash size and erase
size for the Intel Stratix 10 RSU driver, using the existing service
layer SMC path.

Patch 1 documents the new sysfs attributes (size0-size3 and
erase_size0-erase_size3).

Patch 2 implements COMMAND_RSU_GET_DEVICE_INFO in the RSU and service
drivers, caches up to four devices in the driver, and adds the sysfs
files.

Patch 3 fixes remove() teardown after the async client is registered:
call stratix10_svc_remove_async_client() before
stratix10_svc_free_channel() so async state is not leaked.

Changes in v4:
- Rebased onto dinguyen/socfpga_svc_fixes_for_v7.2 (for v7.2
  integration), instead of torvalds/master.
- Probe error-path teardown from v3 patch 3/3 is dropped; that is
  already in dinguyen's tree in commit
  bfd2eb9bba54 ("firmware: stratix10-rsu: Fix NULL deref on rsu_send_msg() timeout in probe"),
  which centralizes probe cleanup with goto labels.
- Patch 3/3 is narrowed to stratix10_rsu_remove() only (1 line); probe
  paths and return 0 on success are no longer in this series.
- Patch 2/3 wires COMMAND_RSU_GET_DEVICE_INFO probe errors into the
  rebased goto remove_async_client path.

Changes in v3:
- No code changes in all patches, only put Cc: stable@vger.kernel.org 
  # 6.19+ in the sign-off block for the Fixes: tag in Patch 3.

Changes in v2:
- No code changes in all patches, only documentation updates to fix commit
 title and description in Patch 3.

Tze Yee Ng (3):
  Documentation: ABI: add stratix10-rsu QSPI size and erase_size sysfs
  firmware: stratix10-rsu: Add flash device info retrieval via SMC
  firmware: stratix10-rsu: remove async client before freeing channel in
    remove()

 .../sysfs-devices-platform-stratix10-rsu      |  58 +++++
 drivers/firmware/stratix10-rsu.c              | 201 +++++++++++++++++-
 drivers/firmware/stratix10-svc.c              |  94 +++++++-
 include/linux/firmware/intel/stratix10-smc.h  |  25 ++-
 .../firmware/intel/stratix10-svc-client.h     |  12 +-
 5 files changed, 373 insertions(+), 17 deletions(-)

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2.43.7