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The de_wait() helpers previously returned -1 on timeout, and callers discarded the error code by always returning -1. This series replaces -1 with -ETIMEDOUT and propagates the error code to improve error reporting. Patch 1 replaces -1 with -ETIMEDOUT in de_wait() helpers. Patch 2 propagates error codes from de_wait(). v2: - Restore the removed comment in sm750_accel.c as requested Hungyu Lin (2): staging: sm750fb: return -ETIMEDOUT on timeout in de_wait functions staging: sm750fb: propagate error codes from de_wait() drivers/staging/sm750fb/sm750_accel.c | 20 +++++++++++++------- drivers/staging/sm750fb/sm750_hw.c | 4 ++-- 2 files changed, 15 insertions(+), 9 deletions(-) -- 2.34.1