kernel/git/stable/linux.git/drivers/dma/mediatek, branch linux-4.19.y

dmaengine: mediatek: mtk-hsdma: Fix a resource leak in the error handling path of the probe function

2021-01-17T13:04:21+00:00

commit 33cbd54dc515cc04b5a603603414222b4bb1448d upstream. 'mtk_hsdma_hw_deinit()' should be called in the error handling path of the probe function to undo a previous 'mtk_hsdma_hw_init()' call, as already done in the remove function. Fixes: 548c4597e984 ("dmaengine: mediatek: Add MediaTek High-Speed DMA controller for MT7622 and MT7623 SoC") Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/20201219124718.182664-1-christophe.jaillet@wanadoo.fr Signed-off-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman

dmaengine: mediatek: hsdma_probe: fixed a memory leak when devm_request_irq fails

2020-10-01T11:14:27+00:00

[ Upstream commit 1ff95243257fad07290dcbc5f7a6ad79d6e703e2 ] When devm_request_irq fails, currently, the function dma_async_device_unregister gets called. This doesn't free the resources allocated by of_dma_controller_register. Therefore, we have called of_dma_controller_free for this purpose. Signed-off-by: Satendra Singh Thakur Link: https://lore.kernel.org/r/20191109113523.6067-1-sst2005@gmail.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin

dmaengine: mediatek: Add MediaTek High-Speed DMA controller for MT7622 and MT7623 SoC

2018-03-27T09:48:15+00:00

MediaTek High-Speed DMA controller (HSDMA) on MT7622 and MT7623 SoC has a single ring is dedicated to memory-to-memory transfer through ring based descriptor management. Even though there is only one physical ring available inside HSDMA, the driver can be easily extended to the support of multiple virtual channels processing simultaneously by means of DMA_VIRTUAL_CHANNELS effort. Signed-off-by: Sean Wang Cc: Randy Dunlap Cc: Fengguang Wu Cc: Julia Lawall Signed-off-by: Vinod Koul