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Date: Sat, 19 Nov 2011 23:57:43 +0530 From: "Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com> To: Tomáš Janoušek <tomi@...i.cz> CC: Szymon Janc <szymon@...c.net.pl>, "Gustavo F. Padovan" <padovan@...fusion.mobi>, Marcel Holtmann <marcel@...tmann.org>, linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org, Linux PM mailing list <linux-pm@...r.kernel.org> Subject: Re: [REGRESSION] resume takes 10s longer due to e1b6eb3 (Bluetooth: Increase HCI reset timeout ...) [ Adding linux-pm mailing list to CC as well. ] Thanks, Srivatsa S. Bhat On 11/19/2011 12:10 AM, Tomáš Janoušek wrote: > Hello, > > while testing the 3.2-rc kernel, I experienced that resume takes 10 seconds > more than usual, and bisected this to be caused by e1b6eb3 (Bluetooth: > Increase HCI reset timeout in hci_dev_do_close). > > My hardware is Lenovo ThinkPad T420, model number 4178-A3G, with a Broadcom > Bluetooth adapter (I'm attaching the relevant part of lsusb). > > The relevant portion of dmesg is: > [ 76.502818] usb 1-1.4: reset full-speed USB device number 4 using ehci_hcd > [ 76.588225] btusb 1-1.4:1.0: no reset_resume for driver btusb? > [ 76.591870] btusb 1-1.4:1.1: no reset_resume for driver btusb? > [ 86.565269] PM: resume of devices complete after 10486.220 msecs > > My resume scripts did contain a hciconfig hci0 down followed by up, because > on my previous notebook (and the kernel I used at the time) it was needed for > BT to work after suspend. On this hardware, however, none of that is needed. > Bluetooth after suspend works regardless of whether that patch is applied or > not, and I believe it would wait indefinitely if given large enough timeout. > > Aside from reverting the patch, doing the following before suspend also works > around the issue: > echo disable > /proc/acpi/ibm/bluetooth > > Kind regards, > -- Tomáš Janoušek, a.k.a. Liskni_si, http://work.lisk.in/ > > > bt.txt > > > Bus 001 Device 006: ID 0a5c:217f Broadcom Corp. Bluetooth Controller > Device Descriptor: > bLength 18 > bDescriptorType 1 > bcdUSB 2.00 > bDeviceClass 224 Wireless > bDeviceSubClass 1 Radio Frequency > bDeviceProtocol 1 Bluetooth > bMaxPacketSize0 64 > idVendor 0x0a5c Broadcom Corp. > idProduct 0x217f Bluetooth Controller > bcdDevice 7.48 > iManufacturer 1 Broadcom Corp > iProduct 2 Broadcom Bluetooth Device > iSerial 3 CCAF78EC8B4F > bNumConfigurations 1 > Configuration Descriptor: > bLength 9 > bDescriptorType 2 > wTotalLength 216 > bNumInterfaces 4 > bConfigurationValue 1 > iConfiguration 0 > bmAttributes 0xe0 > Self Powered > Remote Wakeup > MaxPower 0mA > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 0 > bAlternateSetting 0 > bNumEndpoints 3 > bInterfaceClass 224 Wireless > bInterfaceSubClass 1 Radio Frequency > bInterfaceProtocol 1 Bluetooth > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x81 EP 1 IN > bmAttributes 3 > Transfer Type Interrupt > Synch Type None > Usage Type Data > wMaxPacketSize 0x0010 1x 16 bytes > bInterval 1 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x82 EP 2 IN > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 1 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x02 EP 2 OUT > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 1 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 1 > bAlternateSetting 0 > bNumEndpoints 2 > bInterfaceClass 224 Wireless > bInterfaceSubClass 1 Radio Frequency > bInterfaceProtocol 1 Bluetooth > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x83 EP 3 IN > bmAttributes 1 > Transfer Type Isochronous > Synch Type None > Usage Type Data > wMaxPacketSize 0x0000 1x 0 bytes > bInterval 1 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x03 EP 3 OUT > bmAttributes 1 > Transfer Type Isochronous > Synch Type None > Usage Type Data > wMaxPacketSize 0x0000 1x 0 bytes > bInterval 1 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 1 > bAlternateSetting 1 > bNumEndpoints 2 > bInterfaceClass 224 Wireless > bInterfaceSubClass 1 Radio Frequency > bInterfaceProtocol 1 Bluetooth > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x83 EP 3 IN > bmAttributes 1 > Transfer Type Isochronous > Synch Type None > Usage Type Data > wMaxPacketSize 0x0009 1x 9 bytes > bInterval 1 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x03 EP 3 OUT > bmAttributes 1 > Transfer Type Isochronous > Synch Type None > Usage Type Data > wMaxPacketSize 0x0009 1x 9 bytes > bInterval 1 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 1 > bAlternateSetting 2 > bNumEndpoints 2 > bInterfaceClass 224 Wireless > bInterfaceSubClass 1 Radio Frequency > bInterfaceProtocol 1 Bluetooth > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x83 EP 3 IN > bmAttributes 1 > Transfer Type Isochronous > Synch Type None > Usage Type Data > wMaxPacketSize 0x0011 1x 17 bytes > bInterval 1 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x03 EP 3 OUT > bmAttributes 1 > Transfer Type Isochronous > Synch Type None > Usage Type Data > wMaxPacketSize 0x0011 1x 17 bytes > bInterval 1 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 1 > bAlternateSetting 3 > bNumEndpoints 2 > bInterfaceClass 224 Wireless > bInterfaceSubClass 1 Radio Frequency > bInterfaceProtocol 1 Bluetooth > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x83 EP 3 IN > bmAttributes 1 > Transfer Type Isochronous > Synch Type None > Usage Type Data > wMaxPacketSize 0x0020 1x 32 bytes > bInterval 1 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x03 EP 3 OUT > bmAttributes 1 > Transfer Type Isochronous > Synch Type None > Usage Type Data > wMaxPacketSize 0x0020 1x 32 bytes > bInterval 1 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 1 > bAlternateSetting 4 > bNumEndpoints 2 > bInterfaceClass 224 Wireless > bInterfaceSubClass 1 Radio Frequency > bInterfaceProtocol 1 Bluetooth > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x83 EP 3 IN > bmAttributes 1 > Transfer Type Isochronous > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 1 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x03 EP 3 OUT > bmAttributes 1 > Transfer Type Isochronous > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 1 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 1 > bAlternateSetting 5 > bNumEndpoints 2 > bInterfaceClass 224 Wireless > bInterfaceSubClass 1 Radio Frequency > bInterfaceProtocol 1 Bluetooth > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x83 EP 3 IN > bmAttributes 1 > Transfer Type Isochronous > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 1 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x03 EP 3 OUT > bmAttributes 1 > Transfer Type Isochronous > Synch Type None > Usage Type Data > wMaxPacketSize 0x0040 1x 64 bytes > bInterval 1 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 2 > bAlternateSetting 0 > bNumEndpoints 2 > bInterfaceClass 255 Vendor Specific Class > bInterfaceSubClass 255 Vendor Specific Subclass > bInterfaceProtocol 255 Vendor Specific Protocol > iInterface 0 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x84 EP 4 IN > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0020 1x 32 bytes > bInterval 1 > Endpoint Descriptor: > bLength 7 > bDescriptorType 5 > bEndpointAddress 0x04 EP 4 OUT > bmAttributes 2 > Transfer Type Bulk > Synch Type None > Usage Type Data > wMaxPacketSize 0x0020 1x 32 bytes > bInterval 1 > Interface Descriptor: > bLength 9 > bDescriptorType 4 > bInterfaceNumber 3 > bAlternateSetting 0 > bNumEndpoints 0 > bInterfaceClass 254 Application Specific Interface > bInterfaceSubClass 1 Device Firmware Update > bInterfaceProtocol 1 > iInterface 0 > Device Firmware Upgrade Interface Descriptor: > bLength 7 > bDescriptorType 33 > bmAttributes 7 > Will Not Detach > Manifestation Tolerant > Upload Supported > Download Supported > wDetachTimeout 5000 milliseconds > wTransferSize 64 bytes > Device Status: 0x0001 > Self Powered > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at 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