On Fri, Jan 18, 2013 at 10:50:28AM +0800, Peter Chen wrote: > During the system suspend/resume procedure, the USB also > needs to go suspend/resume procedure, this patch adds > related APIs. It is tested at i.mx6q sabrelite. Meanwhile, > it fixes the bug that the USB will out of work after > system suspend/resume. > > Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx> Haven't reviewed the patches, but I've seen the series fix an imx6q USB issue - the USB will be broken after system suspend/resume operation as below. So for both patches, Tested-by: Shawn Guo <shawn.guo@xxxxxxxxxx> Shawn $ echo mem > /sys/power/state PM: Syncing filesystems ... done. PM: Preparing system for mem sleep mmc0: card a8a5 removed mmc1: card b368 removed Freezing user space processes ... (elapsed 0.01 seconds) done. Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done. PM: Entering mem sleep fec_stop : Graceful transmit stop did not complete ! PM: suspend of devices complete after 14.490 msecs PM: suspend devices took 0.020 seconds PM: late suspend of devices complete after 1.645 msecs PM: noirq suspend of devices complete after 2.432 msecs Disabling non-boot CPUs ... CPU1: shutdown CPU2: shutdown CPU3: shutdown Enabling non-boot CPUs ... CPU1: Booted secondary processor CPU1 is up CPU2: Booted secondary processor CPU2 is up CPU3: Booted secondary processor CPU3 is up PM: noirq resume of devices complete after 1.217 msecs PM: early resume of devices complete after 1.590 msecs hub 2-1:1.0: hub_port_status failed (err = -71) hub 2-1:1.0: hub_port_status failed (err = -71) hub 2-1:1.0: hub_port_status failed (err = -71) PM: resume of devices complete after 70.677 msecs PM: resume devices took 0.080 seconds PM: Finishing wakeup. Restarting tasks ... done. mmc0: new high speed SDHC card at address a8a5 mmcblk0: mmc0:a8a5 SD04G 3.69 GiB mmcblk0: p1 p2 p3 mmc1: SD Status: Invalid Allocation Unit size. mmc1: card lacks mandatory switch function, performance might suffer. mmc1: new SD card at address b368 mmcblk1: mmc1:b368 MS 121 MiB mmcblk1: p1 root@freescale ~$ ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 hub 2-0:1.0: Cannot enable port 1. Maybe the USB cable is bad? ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 hub 2-0:1.0: Cannot enable port 1. Maybe the USB cable is bad? ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 hub 2-0:1.0: Cannot enable port 1. Maybe the USB cable is bad? ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 ci_hdrc ci_hdrc.1: port 1 reset error -110 hub 2-0:1.0: Cannot enable port 1. Maybe the USB cable is bad? hub 2-1:1.0: hub_port_status failed (err = -19) hub 2-1:1.0: hub_port_status failed (err = -19) hub 2-1:1.0: hub_port_status failed (err = -19) hub 2-1:1.0: activate --> -19 usb 2-1: USB disconnect, device number 2 ... -- 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
