Here are some patches to teach the cppi41 DMA driver support for suspend and resume. Patches 1-3 are simply cosmetic things that emerged during my debugging sessions. Patch #4 is actually a real bugfix which I would like Sebastian Andrzej Siewior to have a look at. Quite frankly, the allocation scheme in this driver and the logic to determine a descriptor's index number seems quite complicated to me, but that's probably a different story. Allocating and freeing the exact same pointer more than once is certainly a bug. Patch #5 adds support for suspend and resume. As the commit log says, the code needed to achive this is the result of a trial-and-error session. This is the minimum that's I'm left with now and which works for me. On a different note, I'm also working on patches for the musb core to make it suspend and resume. Currently, I still have to rmmod/insmod musb_dsps before/after the resume cycle, but I'm hoping to make progress here soon. Thanks, Daniel v2 -> v3: * Patch #5: kill DEV_PM_OPS macro hack and fix a typo (Reported by Sergei Shtylyov) v1 -> v2: * Patch #5: depend on CONFIG_PM_SLEEP rather than on CONFIG_PM and use SIMPLE_DEV_PM_OPS (Reported by Sergei Shtylyov) Daniel Mack (5): dma: cppi41: pass around device instead of platform_device dma: cppi41: s/deinit_cpii41/deinit_cppi41/ dma: cppi41: add shortcut to &pdev->dev in cppi41_dma_probe() dma: cppi41: only allocate descriptor memory once dma: cppi41: add support for suspend and resume drivers/dma/cppi41.c | 115 +++++++++++++++++++++++++++++++-------------------- 1 file changed, 70 insertions(+), 45 deletions(-) -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
