Hi, 1) I use 2.6.29 Kernel. 2) I use a SMSC 3320 PHY to which a hub is connected. I have 2 devices on the hub. My host is omap ehci. 3) When i suspend-resume the usb device i get the error "I get an error "PM: Device 1-2.2 failed to resume: error -19" 4) I am not really sure why i get this - After resume, Both the devices get re-enumerates and i can access them. 5) To get it working on this PHY what i do i resume path is i reset the PHY and then the HUB and i have disabled CONFIG_USB_SUSPEND. 6) I have done phy and hub reset both in resume path of the ehci resume of ehci-omap.c. Is there a better place to do hub reset in suspend-resume? 7) Also, I have applied a patch found at http://e2e.ti.com/support/arm174_microprocessors/omap_applications_processors/f/42/p/29363/102101.aspx#102101 However whats bothering me are the messages during suspend-resume. Not sure why usb_dev_resume return -19. Messages i get are: pm_op(): usb_dev_resume+0x0/0x18 returns -19 PM: Device 1-2.1 failed to resume: error -19 pm_op(): usb_dev_resume+0x0/0x18 returns -19 PM: Device 1-2.2 failed to resume: error -19 Restarting tasks ... <7>hub 1-0:1.0: state 7 ports 3 chg 0004 evt 0000 usb 1-2.1: USB disconnect, address 16 Let me know if i am missing something. Thank you, Regards, sriram root@omap3:/sys# echo mem > /sys/power/state PM: Syncing filesystems ... done. Freezing user space processes ... (elapsed 0.00 seconds) done. Freezing remaining freezable tasks ... (elapsed 0.00 seconds) done. Suspending console(s) (use no_console_suspend to debug) Powerdomain (iva2_pwrdm) didn't enter target state 1 Could not enter target state in pm_suspend usb 1-2: reset high speed USB device using ehci-omap and address 2 pm_op(): usb_dev_resume+0x0/0x18 returns -19 PM: Device 1-2.1 failed to resume: error -19 pm_op(): usb_dev_resume+0x0/0x18 returns -19 PM: Device 1-2.2 failed to resume: error -19 Restarting tasks ... <7>hub 1-0:1.0: state 7 ports 3 chg 0004 evt 0000 usb 1-2.1: USB disconnect, address 16 done. root@omap3:/sys# usb 1-2.1: new full speed USB device using ehci-omap and address 18 usb 1-2.1: new high speed USB device using ehci-omap and address 19 usb 1-2.1: config 1 interface 0 altsetting 0 bulk endpoint 0x81 has invalid maxpacket 64 usb 1-2.1: config 1 interface 1 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 64 usb 1-2.1: config 1 interface 4 altsetting 0 bulk endpoint 0x86 has invalid maxpacket 64 usb 1-2.1: New USB device found, idVendor=0af0, idProduct=d035 usb 1-2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-2.1: Product: Option GlobeTrotter usb 1-2.1: Manufacturer: Option Wireless Technology usb 1-2.1: configuration #1 chosen from 1 choice hso0 (hso): not using net_device_ops yet usb 1-2.2: USB disconnect, address 17 usb 1-2.2: new high speed USB device using ehci-omap and address 20 usb 1-2.2: New USB device found, idVendor=1307, idProduct=0165 usb 1-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-2.2: Product: USB Mass Storage Device usb 1-2.2: Manufacturer: USBest Technology usb 1-2.2: SerialNumber: 00000000001F14 usb 1-2.2: configuration #1 chosen from 1 choice scsi5 : SCSI emulation for USB Mass Storage devices root@omap3:/sys# scsi 5:0:0:0: Direct-Access Ut165 USB2FlashStorag e 0.00 PQ: 0 ANSI: 2 sd 5:0:0:0: [sda] 7716864 512-byte hardware sectors: (3.95 GB/3.67 GiB) sd 5:0:0:0: [sda] Write Protect is off sd 5:0:0:0: [sda] Assuming drive cache: write through sd 5:0:0:0: [sda] 7716864 512-byte hardware sectors: (3.95 GB/3.67 GiB) sd 5:0:0:0: [sda] Write Protect is off sd 5:0:0:0: [sda] Assuming drive cache: write through sda:<7>usb-storage: queuecommand called sd 5:0:0:0: [sda] Attached SCSI removable disk root@omap3:/sys# -- 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
