From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: [PATCH v2 1/2] dmaengine: cppi41: Fix list not empty warning on runtime suspend Date: Thu, 12 Jan 2017 09:47:56 -0800 Message-ID: <20170112174756.GI2630@atomide.com> References: <20170109170337.6957-1-abailon@baylibre.com> <20170109170337.6957-2-abailon@baylibre.com> <20170109183416.GJ2630@atomide.com> <20170112170900.GG2630@atomide.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Alexandre Bailon Cc: Grygorii Strashko , vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, nsekhar-l0cyMroinI0@public.gmane.org, khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org, ptitiano-rdvid1DuHRBWk0Htik3J/w@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, andy.shevchenko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org List-Id: linux-omap@vger.kernel.org * Alexandre Bailon [170112 09:42]: > This solves the issue but I still have a bad playback quality. > I don't remember if I have spoken about it so I will describe it. > When I play audio (with your patch or mine), the music cut a lot. > The issue go away when the MUSB driver is built in PIO mode only. > Some experimentation I made today let me think it is related to > PM runtime. > I guess I should probably start another thread about that. OK interesting. We may be able to fix that just by requesting PM QoS for the audio device. See a fix for similar issue in thread "[PATCH v6] ASoC: omap-mcbsp: Add PM QoS support for McBSP to prevent glitches". Regards, Tony -- 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