On Tue, Jan 15, 2019 at 12:44:34PM -0600, Bin Liu wrote: > Hi, > > On Tue, Jan 15, 2019 at 10:29:36AM -0800, Tony Lindgren wrote: > > Hi, > > > > * Dietmar May <dmay@xxxxxxxxxxxxxxx> [190114 14:44]: > > > My console and syslog are getting flooded with: > > > > > > cppi41-dma-engine 47400000.dma-controller: cppi41_irq pm runtime get: -115 > > > cppi41-dma-engine 47400000.dma-controller: cppi41_irq pm runtime get: -115 > > > cppi41-dma-engine 47400000.dma-controller: cppi41_irq pm runtime get: -115 > > > > > > whenever I have a USB thumbdrive installed on a TI AM3352 based device. > > > > > > This looks like: > > > > > > https://patchwork.kernel.org/patch/9524281/ > > > > > > I have an old 4.9.130 build that doesn't show the problem. Still trying to > > > bisect, but wondering if anyone could kindly update me on the status on this > > > bug? > > > > > > From the above patch, it looks like a -71 error was fixed (I'm not seeing > > > that one), and the -115 error disappeared at the same time. > > > > Hmm sounds like we're missing some fix(es) in v4.9.150. > > > > Bin, are you aware of this? > > No, I haven't used v4.9.y for a while. > In a quick search in dma cppi41 driver, it seems it hasn't been touched > since v4.9.130, except 59861547ec9a("dmaengine: cppi41: delete channel > from pending list when stop channel") which was added recently. Now I see the problem on v4.9.31 and v4.9.147 (the latest as of now), but not on kernel [1] branch ti-linux-4.9.y which is on top of v4.9.147 now, so it seems the issue has been always on v4.9.y. [1] git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git Regards, -Bin.
