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Date: Sun, 11 Mar 2007 22:53:09 +0100
From: Jiri Slaby <jirislaby@...il.com>
To: Jiri Kosina <jikos@...os.cz>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>,
Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel@...r.kernel.org, Richard Purdie <rpurdie@...ys.net>
Subject: Re: Keyboard stops working after *lock [Was: 2.6.21-rc2-mm1]
Jiri Kosina napsal(a):
> On Sun, 11 Mar 2007, Jiri Slaby wrote:
>
>>> - /* make sure the unused bits in the last byte are zeros */
>>> - if (count > 0 && size > 0)
>>> - data[(offset+count*size-1)/8] = 0;
>>> -
>> No, this doesn't help -- -rc3-mm2 minus this behaves exactly the same.
>> -rc3 without this patch too.
>> Going to try to revert the commits mentioned above.
>
> Hmm, strange, I did bet that this would have solved the problem, as the
> code is for sure bogus and could be causing these kinds of problems (I
Hmm, so I'll check this out again to eliminate human factor.
> Otherwise, would you care to bisect?
Yup.
> What is the keyboard in question, please? (vendor/product ids).
Bus 002 Device 013: ID 0458:004c KYE Systems Corp. (Mouse Systems) Slimstar Pro
Keyboard
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0458 KYE Systems Corp. (Mouse Systems)
idProduct 0x004c Slimstar Pro Keyboard
bcdDevice 1.01
iManufacturer 1 ABBHOME
iProduct 2 USB Keyboard
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 59
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 50mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Devices
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 1 Keyboard
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 65
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 10
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Devices
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 2 Mouse
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 104
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 10
It has a hub inside, I think it's connected behind
Bus 002 Device 012: ID 04b4:2050 Cypress Semiconductor Corp.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 8
idVendor 0x04b4 Cypress Semiconductor Corp.
idProduct 0x2050
bcdDevice 0.01
iManufacturer 1 Bella Corporation
iProduct 2 GBella Corporation DV Keyboard
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
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 0x0001 1x 1 bytes
bInterval 255
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 3
wHubCharacteristic 0x000d
Per-port power switching
Compound device
Per-port overcurrent protection
bPwrOn2PwrGood 50 * 2 milli seconds
bHubContrCurrent 25 milli Ampere
DeviceRemovable 0xc0
PortPwrCtrlMask 0xe6
Hub Port Status:
Port 1: 0000.0103 power enable connect
Port 2: 0000.0100 power
Port 3: 0000.0100 power
regards,
--
http://www.fi.muni.cz/~xslaby/ Jiri Slaby
faculty of informatics, masaryk university, brno, cz
e-mail: jirislaby gmail com, gpg pubkey fingerprint:
B674 9967 0407 CE62 ACC8 22A0 32CC 55C3 39D4 7A7E
Hnus <hnus@...muni.cz> is an alias for /dev/null
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