Hi guys, My Zynq based board stopped booting today, a bisect points to this patch: commit 0f153a1b8193 ("usb: chipidea: Set the DT node on the child device") It looks like it gets stuck in some sort of boot loop of doom: 48 locks held by swapper/0/1: #0: 42a2c0d8 (&dev->mutex){....}-{3:3}, at: __driver_attach+0x12c/0x15c #1: 42a41cd8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164 #2: 42abdcd8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164 #3: 42abd8d8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164 #4: 42abd4d8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164 #5: 42abd0d8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164 #6: 42b00cd8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164 #7: 42b008d8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x2c/0x164 <snip> [<40100af4>] (__irq_svc) from [<40920270>] (_raw_spin_unlock_irqrestore+0x30/0x5c) [<40920270>] (_raw_spin_unlock_irqrestore) from [<40433238>] (klist_next+0x84/0xac) [<40433238>] (klist_next) from [<40503a5c>] (bus_for_each_drv+0x60/0xbc) [<40503a5c>] (bus_for_each_drv) from [<40505ea8>] (__device_attach+0xc4/0x164) [<40505ea8>] (__device_attach) from [<405047e0>] (bus_probe_device+0x28/0x84) [<405047e0>] (bus_probe_device) from [<405022b8>] (device_add+0x590/0x7c4) [<405022b8>] (device_add) from [<4050835c>] (platform_device_add+0xa8/0x1f0) [<4050835c>] (platform_device_add) from [<405f329c>] (ci_hdrc_add_device+0x3b4/0x434) [<405f329c>] (ci_hdrc_add_device) from [<405f5f0c>] (ci_hdrc_usb2_probe+0x130/0x180) [<405f5f0c>] (ci_hdrc_usb2_probe) from [<40507e60>] (platform_probe+0x58/0xa8) [<40507e60>] (platform_probe) from [<4050584c>] (really_probe+0x1d8/0x418) [<4050584c>] (really_probe) from [<40505c44>] (__driver_probe_device+0x1b8/0x1f0) [<40505c44>] (__driver_probe_device) from [<40505ca0>] (driver_probe_device+0x24/0xa4) [<40505ca0>] (driver_probe_device) from [<405060b0>] (__device_attach_driver+0xbc/0x110) [<405060b0>] (__device_attach_driver) from [<40503aa4>] (bus_for_each_drv+0xa8/0xbc) [<40503aa4>] (bus_for_each_drv) from [<40505ea8>] (__device_attach+0xc4/0x164) [<40505ea8>] (__device_attach) from [<405047e0>] (bus_probe_device+0x28/0x84) [<405047e0>] (bus_probe_device) from [<405022b8>] (device_add+0x590/0x7c4) [<405022b8>] (device_add) from [<4050835c>] (platform_device_add+0xa8/0x1f0) [<4050835c>] (platform_device_add) from [<405f329c>] (ci_hdrc_add_device+0x3b4/0x434) [<405f329c>] (ci_hdrc_add_device) from [<405f5f0c>] (ci_hdrc_usb2_probe+0x130/0x180) [<405f5f0c>] (ci_hdrc_usb2_probe) from [<40507e60>] (platform_probe+0x58/0xa8) [<40507e60>] (platform_probe) from [<4050584c>] (really_probe+0x1d8/0x418) [<4050584c>] (really_probe) from [<40505c44>] (__driver_probe_device+0x1b8/0x1f0) [<40505c44>] (__driver_probe_device) from [<40505ca0>] (driver_probe_device+0x24/0xa4) [<40505ca0>] (driver_probe_device) from [<405060b0>] (__device_attach_driver+0xbc/0x110) [<405060b0>] (__device_attach_driver) from [<40503aa4>] (bus_for_each_drv+0xa8/0xbc) [<40503aa4>] (bus_for_each_drv) from [<40505ea8>] (__device_attach+0xc4/0x164) [<40505ea8>] (__device_attach) from [<405047e0>] (bus_probe_device+0x28/0x84) [<405047e0>] (bus_probe_device) from [<405022b8>] (device_add+0x590/0x7c4) [<405022b8>] (device_add) from [<4050835c>] (platform_device_add+0xa8/0x1f0) [<4050835c>] (platform_device_add) from [<405f329c>] (ci_hdrc_add_device+0x3b4/0x434) [<405f329c>] (ci_hdrc_add_device) from [<405f5f0c>] (ci_hdrc_usb2_probe+0x130/0x180) [<405f5f0c>] (ci_hdrc_usb2_probe) from [<40507e60>] (platform_probe+0x58/0xa8) [<40507e60>] (platform_probe) from [<4050584c>] (really_probe+0x1d8/0x418) [<4050584c>] (really_probe) from [<40505c44>] (__driver_probe_device+0x1b8/0x1f0) [<40505c44>] (__driver_probe_device) from [<40505ca0>] (driver_probe_device+0x24/0xa4) [<40505ca0>] (driver_probe_device) from [<405060b0>] (__device_attach_driver+0xbc/0x110) [<405060b0>] (__device_attach_driver) from [<40503aa4>] (bus_for_each_drv+0xa8/0xbc) [<40503aa4>] (bus_for_each_drv) from [<40505ea8>] (__device_attach+0xc4/0x164) [<40505ea8>] (__device_attach) from [<405047e0>] (bus_probe_device+0x28/0x84) [<405047e0>] (bus_probe_device) from [<405022b8>] (device_add+0x590/0x7c4) I will keep poking it today to see if I can figure out more of what is actually going wrong, but if any of you guys had any thoughts/suggestions or if you want me to provide any additional info all of those would be greatly appreciated. Thanks, Charles