linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2021-04-12	dmaengine: plx_dma: add a missing put_device() on error path	Dan Carpenter	1	-7/+11
	Add a missing put_device(&pdev->dev) if the call to dma_async_device_register(dma); fails. Fixes: 905ca51e63be ("dmaengine: plx-dma: Introduce PLX DMA engine PCI driver skeleton") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Link: https://lore.kernel.org/r/YFnq/0IQzixtAbC1@mwanda Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-09-18	dmaengine: plx_dma: convert tasklets to use new tasklet_setup() API	Allen Pais	1	-4/+3
	In preparation for unconditionally passing the struct tasklet_struct pointer to all tasklet callbacks, switch to using the new tasklet_setup() and from_tasklet() to pass the tasklet pointer explicitly. Signed-off-by: Allen Pais <allen.lkml@gmail.com> Link: https://lore.kernel.org/r/20200831103542.305571-34-allen.lkml@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-01-15	dmaengine: plx-dma: Implement descriptor submission	Logan Gunthorpe	1	-0/+119
	On prep, a spin lock is taken and the next entry in the circular buffer is filled. On submit, the valid bit is set in the hardware descriptor and the lock is released. The DMA engine is started (if it's not already running) when the client calls dma_async_issue_pending(). Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Link: https://lore.kernel.org/r/20200103212021.2881-4-logang@deltatee.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-01-15	dmaengine: plx-dma: Implement hardware initialization and cleanup	Logan Gunthorpe	1	-0/+370
	Allocate DMA coherent memory for the ring of DMA descriptors and program the appropriate hardware registers. A tasklet is created which is triggered on an interrupt to process all the finished requests. Additionally, any remaining descriptors are aborted when the hardware is removed or the resources freed. Use an RCU pointer to synchronize PCI device unbind. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Link: https://lore.kernel.org/r/20200103212021.2881-3-logang@deltatee.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-01-15	dmaengine: plx-dma: Introduce PLX DMA engine PCI driver skeleton	Logan Gunthorpe	1	-0/+150
	Some PLX Switches can expose DMA engines via extra PCI functions on the upstream port. Each function will have one DMA channel. This patch is just the core PCI driver skeleton and dma engine registration. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Link: https://lore.kernel.org/r/20200103212021.2881-2-logang@deltatee.com Signed-off-by: Vinod Koul <vkoul@kernel.org>