On 10/02/2013 11:19 AM, Daniel Mack wrote: > Hi Sebastian, Hi Daniel, > On 02.10.2013 10:29, Sebastian Andrzej Siewior wrote: >> * Daniel Mack | 2013-10-01 15:31:11 [+0200]: > > Thanks a lot for having a look! As I'm going to be off for a couple of > days now, and only be able to read my mails sporadically, maybe you can > also try the musb suspend functions on your hardware. I'll give you a > quick wrap-up of how my test setup looks like. > > On an AM33xx board, I have a host-only (type A) connector with a USB > memory stick plugged in. The relevant config settings are: > > CONFIG_USB_MUSB_HDRC=m > # CONFIG_USB_MUSB_HOST is not set > # CONFIG_USB_MUSB_GADGET is not set > CONFIG_USB_MUSB_DUAL_ROLE=y > # CONFIG_USB_MUSB_TUSB6010 is not set > # CONFIG_USB_MUSB_OMAP2PLUS is not set > # CONFIG_USB_MUSB_AM35X is not set > CONFIG_USB_MUSB_DSPS=m > # CONFIG_USB_MUSB_UX500 is not set > CONFIG_USB_MUSB_AM335X_CHILD=m > # CONFIG_MUSB_PIO_ONLY is not set > CONFIG_USB_TI_CPPI41_DMA=y > CONFIG_TI_CPPI41=y > > Once the system is booted up and the USB media is detected, I send the > system to sleep mode with "cat mem >/sys/power/state". After wakeup, I > access the media by mounting and unmounting it once, then send the > system back to sleep. Okay. Going to sleep is probably easy, I need to figure out how to wakeup… > Repeating the above cycle multiple times will sooner or later make the > warning kick in without the discussed patch. Sometimes it happened on > first try, sometimes it took me up to ~20 cycles to make it happen. Ah. Okay. > I'd be curious whether you see the same behavior on your board as well, > and whether the fix work for you, too. > > For reference, I just pushed my current working tree here: > > https://github.com/zonque/linux/tree/am33xx-3.12 Thanks. > > > Thanks, > Daniel > Sebastian -- 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
