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commitfcaf242e7fupstream. When dmaengine_slave_config() fails, the DMA channel acquired by dma_request_chan() is not released before returning the error, leaking the channel reference. Fix by adding dma_release_channel() in the error path. The ata_host_activate() error path already correctly releases the DMA channel. Cc: stable@vger.kernel.org Fixes:88622d80af("ata: pata_pxa: dmaengine conversion") Signed-off-by: Wentao Liang <vulab@iscas.ac.cn> Reviewed-by: Niklas Cassel <cassel@kernel.org> Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>