drm/gma500: return errors from Oaktrail HDMI I2C reads

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xfer_read() waits for the HDMI I2C transaction to reach
I2C_TRANSACTION_DONE, but it ignores both timeout and signal returns from
wait_for_completion_interruptible_timeout().  If the interrupt never
advances the transaction state, the loop can wait forever.

Return -ETIMEDOUT when the completion wait expires, propagate interrupted
waits, and make the I2C master_xfer callback return the first transfer
error instead of reporting a successful message count.

Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patch.msgid.link/20260625003240.6923-1-pengpeng@iscas.ac.cn

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Pengpeng Hou 2026-06-25 08:32:40 +08:00 • committed by Patrik Jakobsson

parent 7dc3680b7f

commit 9b5ce5c496

1 changed files with 16 additions and 5 deletions

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drivers/gpu/drm/gma500/oaktrail_hdmi_i2c.c

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