linux-dev/drivers/dma/ptdma/ptdma-dmaengine.c, branch linus/master

dmaengine: ptdma: statify pt_tx_status

2022-04-22T05:59:13Z

LKP bot reports a new warning: Warning: drivers/dma/ptdma/ptdma-dmaengine.c:262:1: warning: no previous prototype for 'pt_tx_status' [-Wmissing-prototypes] pt_tx_status() should be static, so declare as such. Reported-by: kernel test robot Fixes: d965068259d1 ("dmaengine: PTDMA: support polled mode") Link: https://lore.kernel.org/r/20220421052407.745637-1-vkoul@kernel.org Signed-off-by: Vinod Koul

dmaengine: PTDMA: support polled mode

2022-04-20T11:08:19Z

If the DMA_PREP_INTERRUPT flag is not provided, run in polled mode, which significantly improves IOPS: more than twice on chunks < 4K. Signed-off-by: Ilya Novikov Link: https://lore.kernel.org/r/20220413113733.59041-1-i.m.novikov@yadro.com Signed-off-by: Vinod Koul

dmaengine: ptdma: handle the cases based on DMA is complete

2022-02-15T05:24:54Z

There is a need to segregate the cases when DMA is complete or not. In case if DMA is already complete there is no need to handle it again and gracefully exit from the function. Signed-off-by: Sanjay R Mehta Link: https://lore.kernel.org/r/1643814880-3882-3-git-send-email-Sanju.Mehta@amd.com Signed-off-by: Vinod Koul

dmaengine: ptdma: fix concurrency issue with multiple dma transfer

2022-02-15T05:24:54Z

The command should be submitted only if the engine is idle, for this, the next available descriptor is checked and set the flag to false in case the descriptor is non-empty. Signed-off-by: Sanjay R Mehta Link: https://lore.kernel.org/r/1643814880-3882-2-git-send-email-Sanju.Mehta@amd.com Signed-off-by: Vinod Koul

dmaengine: ptdma: register PTDMA controller as a DMA resource

2021-08-29T13:44:20Z

Register ptdma queue to Linux dmaengine framework as general-purpose DMA channels. Signed-off-by: Sanjay R Mehta Link: https://lore.kernel.org/r/1629208559-51964-3-git-send-email-Sanju.Mehta@amd.com Signed-off-by: Vinod Koul