From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: [PATCHv4 0/2] cppi41 dma fixes for v4.10-rc cycle Date: Thu, 19 Jan 2017 08:49:06 -0800 Message-ID: <20170119164908.9472-1-tony@atomide.com> Return-path: Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Dan Williams , Vinod Koul Cc: Alexandre Bailon , Andy Shevchenko , Bin Liu , Daniel Mack , Felipe Balbi , George Cherian , Grygorii Strashko , Johan Hovold , Peter Ujfalusi , Sekhar Nori , Sebastian Andrzej Siewior , Sergei Shtylyov , dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-omap@vger.kernel.org Hi all, I'm using v4 naming here as the earlier patch "dmaengine: cppi41: Add dma support to da8xx" has been separated from the error -115 issue. We've identified so far three musb and cppi41 regressions: 1. Error -71 regression with musb This is not dma related, and fixed with recently posted patch "[PATCH 1/2] usb: musb: Fix host mode error -71 regression". 2. Error -115 regression with cppi41 dma with musb This regression was caused by commit 098de42ad670 ("dmaengine: cppi41: Fix unpaired pm runtime when only a USB hub is connected") and causes runtime PM autosuspend delay to time out on active dma transfers when connecting a mass storage device to a usb hub. This is fixed in the first patch in this series. 3. Race with runtime PM and cppi41_dma_issue_pending() This is really a separate issue from the error -115 problem, and fixed with the second patch in this series. That's minimal v4 version of the "dmaengine: cppi41: Fix oops in cppi41_runtime_resume" patch. Regards, Tony Tony Lindgren (2): dmaengine: cppi41: Fix runtime PM timeouts with USB mass storage dmaengine: cppi41: Fix oops in cppi41_runtime_resume drivers/dma/cppi41.c | 56 ++++++++++++++++++++++++++++++++++++++-------------- 1 file changed, 41 insertions(+), 15 deletions(-) -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html