Oliver: I forgot to mention that I did apply your patch to run set-serial for cdc-acm prior to collecting the debug - in the hope that it would provide more info. Anyway - the openwrt router does not have power management (it does not go to sleep or hibernate). is there anything else I could try ? Regards Ashok On Tue, May 22, 2012 at 5:16 PM, Oliver Neukum <oliver@xxxxxxxxxx> wrote: > Am Dienstag, 22. Mai 2012, 21:46:32 schrieb Ashok Rao: >> ----------------------------------------------------------- >> This happens when the device is recognized >> ------------------------------------------------------------------ >> USB device number 2 using ath79-ehci >> Sep 8 16:40:57 OpenWrt kern.debug kernel: [ 188.600000] cdc_acm >> 1-1:1.0: interfaces are valid >> Sep 8 16:40:57 OpenWrt kern.info kernel: [ 188.610000] cdc_acm >> 1-1:1.0: ttyACM0: USB ACM device >> Sep 8 16:40:57 OpenWrt kern.debug kernel: [ 188.640000] cdc_acm >> 1-1:1.0: acm_ctrl_msg - rq 0x22, val 0x0, len 0x0, result 0 >> Sep 8 16:40:57 OpenWrt kern.debug kernel: [ 188.650000] cdc_acm >> 1-1:1.0: acm_ctrl_msg - rq 0x20, val 0x0, len 0x7, result 7 >> >> This goes one from urb 1 to 15 at the beginning when picocom is started >> acm_submit_read_urb - urb 1 >> acm_submit_read_urb - urb 15 >> May 21 02:24:03 OpenWrt kern.debug kernel: [ 1351.270000] cdc_acm >> 1-1:1.0: acm_ctrl_msg - rq 0x20, val 0x0, len 0x7, result 7 >> >> This is after AT command is given >> Sep 8 16:53:20 OpenWrt kern.debug kernel: [ 151.600000] cdc_acm >> 1-1:1.1: acm_tty_write - write 1 >> Sep 8 16:53:20 OpenWrt kern.debug kernel: [ 151.600000] cdc_acm >> 1-1:1.1: acm_write_start - susp_count 0 > > > Unfortunately we have no debug message in acm_resume(). > Can you please try without runtime power management? > > Regards > Oliver -- 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
