[PATCH v4 0/7] drm/xe/sysctrl: Clean up error handling in

The patch series improves error handling in the System Controller mailbox
driver by making error propagation more consistent and using
xe_log_err() for structured error reporting.

It also removes a few redundant checks and simplifies helper
interfaces where no error path exists.

v2:
- Use -EOVERFLOW.
- Drop sysctrl in xe_log_err. (Michal)
- Drop redundant %pe.
- Print response->count.

v3:
- Rebase.

v4:
- Replace xe_warn to xe_log_err_info for. (Michal)
- Use xe_assert().
- Change sysctrl_wait_bit_* to return errno.
- Make sysctrl_write_frame return type as void.
- Log mismatched header info.

Mallesh Koujalagi (7):
  drm/xe/sysctrl: Return error codes from sysctrl_wait_bit_clear()
  drm/xe/sysctrl: Return error codes from sysctrl_wait_bit_set()
  drm/xe/sysctrl: Make sysctrl_write_frame() void
  drm/xe/sysctrl: Use xe_assert() for payload size validation
  drm/xe/sysctrl: Improve firmware response error logging
  drm/xe/sysctrl: Log group and command ID on mailbox failure
  drm/xe/sysctrl: Report 'System Controller event' error using SIGID

 drivers/gpu/drm/xe/xe_sysctrl_event.c   | 14 +++--
 drivers/gpu/drm/xe/xe_sysctrl_mailbox.c | 76 ++++++++++++-------------
 2 files changed, 44 insertions(+), 46 deletions(-)

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2.48.1