Hi Laurentiu, On 10/05/2019 15:56, wrote:
From: Laurentiu Tudor <laurentiu.tudor@xxxxxxx> For HCs that have local memory, replace the current DMA API usage with a genalloc generic allocator to manage the mappings for these devices. This is in preparation for dropping the existing "coherent" dma mem declaration APIs. Current implementation was relying on a short circuit in the DMA API that in the end, was acting as an allocator for these type of devices. Only compiled tested, so any volunteers willing to test are most welcome.
Based on my diggings into this in the past, I would expect that you need to do something about hcd_alloc_coherent() as well.
Robin.
Thank you! For context, see thread here: https://lkml.org/lkml/2019/4/22/357 Laurentiu Tudor (3): ohci-hcd: use genalloc for USB HCs with local memory usb: host: ohci-sm501: init genalloc for local memory usb: host: ohci-tmio: init genalloc for local memory drivers/usb/host/ohci-hcd.c | 21 +++++++++--- drivers/usb/host/ohci-sm501.c | 63 +++++++++++++++++++---------------- drivers/usb/host/ohci-tmio.c | 23 ++++++++----- drivers/usb/host/ohci.h | 3 ++ 4 files changed, 69 insertions(+), 41 deletions(-)
