linux/drivers/dma/cppi41.c, branch v3.12.10

dma: cppi41: off by one in desc_to_chan()

2013-08-28T22:46:33Z

The test here should be ">=" instead of ">". The cdd->chan_busy[] array has "ALLOC_DECS_NUM" elements. Signed-off-by: Dan Carpenter Acked-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman

dma: cpp41: enable pm_runtime during init

2013-08-27T19:19:52Z

With enabled pm_runtime in the kernel the device won't work because it is not "on" during the probe function. This patch enables the device via pm_runtime on probe so it remains activated. Acked-by: Vinod Koul Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi

dma: cpp41: make it compile with CONFIG_BUG=n

2013-08-27T19:08:11Z

Before Randy figures out that this does not compile with CONFIG_BUG=n here is a fix for it. Acked-by: Vinod Koul Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi

usb: musb dma: add cppi41 dma driver

2013-08-09T14:40:16Z

This driver is currently used by musb' cppi41 couter part. I may merge both dma engine user of musb at some point but not just yet. The driver seems to work in RX/TX mode in host mode, tested on mass storage. I increaed the size of the TX / RX transfers and waited for the core code to cancel a transfers and it seems to recover. v2..3: - use mall transfers on RX side and check data toggle. - use rndis mode on tx side so we haveon interrupt for 4096 transfers. - remove custom "transferred" hack and use dmaengine_tx_status() to compute the total amount of data that has been transferred. - cancel transfers and reclaim descriptors v1..v2: - RX path added - dma mode 0 & 1 is working - device tree nodes re-created. Cc: Vinod Koul Cc: Dan Williams Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi