i2c: at91: release DMA channels when probe defers

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at91_twi_probe_master() can return -EPROBE_DEFER from
at91_init_twi_recovery_info() after at91_twi_configure_dma() has already
claimed the tx/rx DMA channels. at91_twi_probe() then returns without
releasing them, and since dma_request_chan() is not devres-managed the
channels leak on every deferred probe attempt.

Release the channels before deferring the probe.

Fixes: f7eeb1af85 ("i2c: at91: release DMA channels on remove and probe error")
Assisted-by: LLM
Signed-off-by: Hongjian Dai <daihongjian@kylinsec.com.cn>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://patch.msgid.link/7D85C6CB6BF0A82E+20260929164340.41628-1-daihongjian@kylinsec.com.cn

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Hongjian Dai 2026-09-30 00:43:40 +08:00 • committed by Andi Shyti

parent 840d8acc87

commit c98bf3b866

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drivers/i2c/busses/i2c-at91-master.c

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