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Arm firmware fixes for v7.3

Browse source 
SCPI fixes address resource leaks and invalid firmware responses, while
 FF-A gains shutdown cleanup needed for normal kexec.
 
 - Release the device node reference acquired during SCPI domain lookup.
 - Validate SCPI DVFS OPP counts and indices returned by firmware to
   prevent out-of-bounds accesses and invalid clock rates.
 - Register the SCPI cpufreq device only once across DVFS providers,
   preserving the registered device pointer for cleanup and allowing
   retries after registration failure.
 - Run FF-A teardown during orderly shutdown so notifications, partition
   devices and RX/TX mappings are released before a replacement kernel
   boots through normal kexec.
 
 Also includes replacing a literal platform device ID with
 PLATFORM_DEVID_NONE and correcting an SCMI comment typo.
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Merge tag 'scmi-ffa-fixes-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

Arm firmware fixes for v7.3

SCPI fixes address resource leaks and invalid firmware responses, while
FF-A gains shutdown cleanup needed for normal kexec.

- Release the device node reference acquired during SCPI domain lookup.
- Validate SCPI DVFS OPP counts and indices returned by firmware to
  prevent out-of-bounds accesses and invalid clock rates.
- Register the SCPI cpufreq device only once across DVFS providers,
  preserving the registered device pointer for cleanup and allowing
  retries after registration failure.
- Run FF-A teardown during orderly shutdown so notifications, partition
  devices and RX/TX mappings are released before a replacement kernel
  boots through normal kexec.

Also includes replacing a literal platform device ID with
PLATFORM_DEVID_NONE and correcting an SCMI comment typo.

* tag 'scmi-ffa-fixes-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_scmi: Fix typo "upto" in comment
  firmware: arm_ffa: Tear down driver during shutdown
  clk: scpi: use PLATFORM_DEVID_NONE for scpi-cpufreq
  clk: scpi: register scpi-cpufreq once and clear on failure
  clk: scpi: bound-check DVFS index in scpi_dvfs_recalc_rate
  firmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS
  firmware: arm_scpi: fix device_node leak in scpi_dev_domain_id

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2026-09-14 17:02:16 +02:00
commit 869e97e66d
4 changed files with 16 additions and 7 deletions
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