On Wed, 2016-06-22 at 04:12 +0000, Saurin G. Suthar wrote: > [ 845.375281] cdc_acm 4-1:1.1: acm_read_bulk_callback - urb 15, len 0 > [ 845.375353] cdc_acm 4-1:1.1: acm_read_bulk_callback - non-zero urb > status: -2 > [ 845.375452] cdc_acm 4-1:1.0: acm_tty_cleanup > [ 845.375543] tty ttyACM0: acm_tty_install > [ 845.375552] tty ttyACM0: acm_tty_open > [ 845.375555] cdc_acm 4-1:1.0: acm_port_activate > [ 845.375563] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 0 > [ 845.375566] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 1 > [ 845.375568] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 2 > [ 845.375570] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 3 > [ 845.375572] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 4 > [ 845.375574] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 5 > [ 845.375577] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 6 > [ 845.375578] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 7 > [ 845.375580] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 8 > [ 845.375583] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 9 > [ 845.375585] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 10 > [ 845.375587] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 11 > [ 845.375589] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 12 > [ 845.375591] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 13 > [ 845.375594] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 14 > [ 845.375596] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 15 > [ 845.376296] cdc_acm 4-1:1.0: acm_ctrl_msg - rq 0x22, val 0x3, len > 0x0, > result 0 > [ 845.377286] cdc_acm 4-1:1.1: acm_read_bulk_callback - urb 0, len 1 > [ 845.377433] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 0 > [ 845.378076] cdc_acm 4-1:1.1: acm_tty_write - count 3 > [ 845.378079] cdc_acm 4-1:1.1: acm_tty_write - write 3 > [ 845.379496] cdc_acm 4-1:1.1: acm_softint > [ 845.380542] cdc_acm 4-1:1.1: acm_read_bulk_callback - urb 1, len 12 > [ 845.380757] cdc_acm 4-1:1.1: acm_submit_read_urb - urb 1 > [ 845.381274] cdc_acm 4-1:1.0: acm_tty_close > [ 845.382305] cdc_acm 4-1:1.0: acm_ctrl_msg - rq 0x22, val 0x0, len > 0x0, > result 0 > [ 845.382312] cdc_acm 4-1:1.0: acm_port_shutdown > [ 845.383323] cdc_acm 4-1:1.0: acm_ctrl_irq - urb shutting down with > status: -2 > [ 858.944068] hrtimer: interrupt took 10038 ns Can you replicate this with native v4.7 or v4.6? Anyway, the log does not show an unlink of the read URBs. Is that repeatable if the system gets stuck? 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
