Re: USB extension (repeater) cable
On Sun, 21 Jan 2007, Udo van den Heuvel wrote: H. Peter Anvin wrote: Greg KH wrote: On Fri, Jan 19, 2007 at 04:40:34PM +0100, Udo van den Heuvel wrote: I just tried my shiny new usb extension cable (repeater): Jan 19 16:01:17 epia kernel: usb 5-1: new high speed USB device using ehci_hcd and address 60 Jan 19 16:01:17 epia kernel: usb 5-1: configuration #1 chosen from 1 choice Jan 19 16:01:17 epia kernel: hub 5-1:1.0: USB hub found Jan 19 16:01:17 epia kernel: hub 5-1:1.0: 4 ports detected Jan 19 16:01:18 epia kernel: hub 5-1:1.0: Cannot enable port 1. Maybe the USB cable is bad? Jan 19 16:01:22 epia last message repeated 3 times Jan 19 16:01:23 epia kernel: hub 5-1:1.0: Cannot enable port 2. Maybe the USB cable is bad? Jan 19 16:01:26 epia last message repeated 3 times Jan 19 16:01:27 epia kernel: hub 5-1:1.0: Cannot enable port 3. Maybe the USB cable is bad? Jan 19 16:01:31 epia last message repeated 3 times [...] Actually, what it looks like is even simpler. The extension cable contains a four-port hub chip (which is the most common commodity chip) and haven't bothered changing the descriptor to tell the computer only one port is actually active. So only one port can be activated, and the others are stubbed out in some evil way. In that case, it should be noisy but harmless. I will do some more testing then. Is there a way to get rid of the messages? I am using the following patch (with 2.6.17) to shut up these messages with my repeater cable - found it on the linux-usb mailinglist some time ago when facing the same problem, but did not write down from who it is. (Does not silence all log messages when usb debugging is enabled, but when it is disabled there is no endless log-stream anymore and the cable works) I tried to fix the logging-change to the usb id, but the cable uses exactly the same chip and id as the two chips inside my 7port usb-hub. Index: linux/drivers/usb/core/hub.c === --- linux.orig/drivers/usb/core/hub.c 2006-10-14 00:45:50.0 +0200 +++ linux/drivers/usb/core/hub.c2006-10-14 00:47:38.0 +0200 @@ -1496,7 +1496,8 @@ /* bomb out completely if something weird happened */ if ((portchange & USB_PORT_STAT_C_CONNECTION)) - return -EINVAL; + //return -EINVAL; + return -ENOTCONN; /* if we`ve finished resetting, then break out of the loop */ if (!(portstatus & USB_PORT_STAT_RESET) && c'ya sven -- The Internet treats censorship as a routing problem, and routes around it. (John Gilmore on http://www.cygnus.com/~gnu/) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: USB extension (repeater) cable
On Sun, 21 Jan 2007, Udo van den Heuvel wrote: H. Peter Anvin wrote: Greg KH wrote: On Fri, Jan 19, 2007 at 04:40:34PM +0100, Udo van den Heuvel wrote: I just tried my shiny new usb extension cable (repeater): Jan 19 16:01:17 epia kernel: usb 5-1: new high speed USB device using ehci_hcd and address 60 Jan 19 16:01:17 epia kernel: usb 5-1: configuration #1 chosen from 1 choice Jan 19 16:01:17 epia kernel: hub 5-1:1.0: USB hub found Jan 19 16:01:17 epia kernel: hub 5-1:1.0: 4 ports detected Jan 19 16:01:18 epia kernel: hub 5-1:1.0: Cannot enable port 1. Maybe the USB cable is bad? Jan 19 16:01:22 epia last message repeated 3 times Jan 19 16:01:23 epia kernel: hub 5-1:1.0: Cannot enable port 2. Maybe the USB cable is bad? Jan 19 16:01:26 epia last message repeated 3 times Jan 19 16:01:27 epia kernel: hub 5-1:1.0: Cannot enable port 3. Maybe the USB cable is bad? Jan 19 16:01:31 epia last message repeated 3 times [...] Actually, what it looks like is even simpler. The extension cable contains a four-port hub chip (which is the most common commodity chip) and haven't bothered changing the descriptor to tell the computer only one port is actually active. So only one port can be activated, and the others are stubbed out in some evil way. In that case, it should be noisy but harmless. I will do some more testing then. Is there a way to get rid of the messages? I am using the following patch (with 2.6.17) to shut up these messages with my repeater cable - found it on the linux-usb mailinglist some time ago when facing the same problem, but did not write down from who it is. (Does not silence all log messages when usb debugging is enabled, but when it is disabled there is no endless log-stream anymore and the cable works) I tried to fix the logging-change to the usb id, but the cable uses exactly the same chip and id as the two chips inside my 7port usb-hub. Index: linux/drivers/usb/core/hub.c === --- linux.orig/drivers/usb/core/hub.c 2006-10-14 00:45:50.0 +0200 +++ linux/drivers/usb/core/hub.c2006-10-14 00:47:38.0 +0200 @@ -1496,7 +1496,8 @@ /* bomb out completely if something weird happened */ if ((portchange USB_PORT_STAT_C_CONNECTION)) - return -EINVAL; + //return -EINVAL; + return -ENOTCONN; /* if we`ve finished resetting, then break out of the loop */ if (!(portstatus USB_PORT_STAT_RESET) c'ya sven -- The Internet treats censorship as a routing problem, and routes around it. (John Gilmore on http://www.cygnus.com/~gnu/) - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: USB extension (repeater) cable
Udo van den Heuvel wrote: Actually, what it looks like is even simpler. The extension cable contains a four-port hub chip (which is the most common commodity chip) and haven't bothered changing the descriptor to tell the computer only one port is actually active. So only one port can be activated, and the others are stubbed out in some evil way. In that case, it should be noisy but harmless. I will do some more testing then. Is there a way to get rid of the messages? No, but you don't have to care about them. -hpa - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: USB extension (repeater) cable
H. Peter Anvin wrote: > Greg KH wrote: >> On Fri, Jan 19, 2007 at 04:40:34PM +0100, Udo van den Heuvel wrote: >>> >>> I just tried my shiny new usb extension cable (repeater): >>> >>> Jan 19 16:01:17 epia kernel: usb 5-1: new high speed USB device using >>> ehci_hcd and address 60 >>> Jan 19 16:01:17 epia kernel: usb 5-1: configuration #1 chosen from 1 >>> choice >>> Jan 19 16:01:17 epia kernel: hub 5-1:1.0: USB hub found >>> Jan 19 16:01:17 epia kernel: hub 5-1:1.0: 4 ports detected >>> Jan 19 16:01:18 epia kernel: hub 5-1:1.0: Cannot enable port 1. Maybe >>> the USB cable is bad? >>> Jan 19 16:01:22 epia last message repeated 3 times >>> Jan 19 16:01:23 epia kernel: hub 5-1:1.0: Cannot enable port 2. Maybe >>> the USB cable is bad? >>> Jan 19 16:01:26 epia last message repeated 3 times >>> Jan 19 16:01:27 epia kernel: hub 5-1:1.0: Cannot enable port 3. Maybe >>> the USB cable is bad? >>> Jan 19 16:01:31 epia last message repeated 3 times [...] > Actually, what it looks like is even simpler. The extension cable > contains a four-port hub chip (which is the most common commodity chip) > and haven't bothered changing the descriptor to tell the computer only > one port is actually active. So only one port can be activated, and the > others are stubbed out in some evil way. In that case, it should be > noisy but harmless. I will do some more testing then. Is there a way to get rid of the messages? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: USB extension (repeater) cable
Greg KH wrote: On Fri, Jan 19, 2007 at 04:40:34PM +0100, Udo van den Heuvel wrote: Hello, I just tried my shiny new usb extension cable (repeater): Jan 19 16:01:17 epia kernel: usb 5-1: new high speed USB device using ehci_hcd and address 60 Jan 19 16:01:17 epia kernel: usb 5-1: configuration #1 chosen from 1 choice Jan 19 16:01:17 epia kernel: hub 5-1:1.0: USB hub found Jan 19 16:01:17 epia kernel: hub 5-1:1.0: 4 ports detected Jan 19 16:01:18 epia kernel: hub 5-1:1.0: Cannot enable port 1. Maybe the USB cable is bad? Jan 19 16:01:22 epia last message repeated 3 times Jan 19 16:01:23 epia kernel: hub 5-1:1.0: Cannot enable port 2. Maybe the USB cable is bad? Jan 19 16:01:26 epia last message repeated 3 times Jan 19 16:01:27 epia kernel: hub 5-1:1.0: Cannot enable port 3. Maybe the USB cable is bad? Jan 19 16:01:31 epia last message repeated 3 times The second cable does the same. Of course we have just one port on this hub... Any ideas? Perhaps the kernel is not lying and this cable really is bad? :) Your hardware can not handle this device, there really is nothing that the kernel can do about this. USB extension cables are horrible things, and usually violate the USB spec and do not always work, as you are finding out. Sorry about that. Actually, what it looks like is even simpler. The extension cable contains a four-port hub chip (which is the most common commodity chip) and haven't bothered changing the descriptor to tell the computer only one port is actually active. So only one port can be activated, and the others are stubbed out in some evil way. In that case, it should be noisy but harmless. -hpa - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: USB extension (repeater) cable
Greg KH wrote: On Fri, Jan 19, 2007 at 04:40:34PM +0100, Udo van den Heuvel wrote: Hello, I just tried my shiny new usb extension cable (repeater): Jan 19 16:01:17 epia kernel: usb 5-1: new high speed USB device using ehci_hcd and address 60 Jan 19 16:01:17 epia kernel: usb 5-1: configuration #1 chosen from 1 choice Jan 19 16:01:17 epia kernel: hub 5-1:1.0: USB hub found Jan 19 16:01:17 epia kernel: hub 5-1:1.0: 4 ports detected Jan 19 16:01:18 epia kernel: hub 5-1:1.0: Cannot enable port 1. Maybe the USB cable is bad? Jan 19 16:01:22 epia last message repeated 3 times Jan 19 16:01:23 epia kernel: hub 5-1:1.0: Cannot enable port 2. Maybe the USB cable is bad? Jan 19 16:01:26 epia last message repeated 3 times Jan 19 16:01:27 epia kernel: hub 5-1:1.0: Cannot enable port 3. Maybe the USB cable is bad? Jan 19 16:01:31 epia last message repeated 3 times The second cable does the same. Of course we have just one port on this hub... Any ideas? Perhaps the kernel is not lying and this cable really is bad? :) Your hardware can not handle this device, there really is nothing that the kernel can do about this. USB extension cables are horrible things, and usually violate the USB spec and do not always work, as you are finding out. Sorry about that. Actually, what it looks like is even simpler. The extension cable contains a four-port hub chip (which is the most common commodity chip) and haven't bothered changing the descriptor to tell the computer only one port is actually active. So only one port can be activated, and the others are stubbed out in some evil way. In that case, it should be noisy but harmless. -hpa - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: USB extension (repeater) cable
H. Peter Anvin wrote: Greg KH wrote: On Fri, Jan 19, 2007 at 04:40:34PM +0100, Udo van den Heuvel wrote: I just tried my shiny new usb extension cable (repeater): Jan 19 16:01:17 epia kernel: usb 5-1: new high speed USB device using ehci_hcd and address 60 Jan 19 16:01:17 epia kernel: usb 5-1: configuration #1 chosen from 1 choice Jan 19 16:01:17 epia kernel: hub 5-1:1.0: USB hub found Jan 19 16:01:17 epia kernel: hub 5-1:1.0: 4 ports detected Jan 19 16:01:18 epia kernel: hub 5-1:1.0: Cannot enable port 1. Maybe the USB cable is bad? Jan 19 16:01:22 epia last message repeated 3 times Jan 19 16:01:23 epia kernel: hub 5-1:1.0: Cannot enable port 2. Maybe the USB cable is bad? Jan 19 16:01:26 epia last message repeated 3 times Jan 19 16:01:27 epia kernel: hub 5-1:1.0: Cannot enable port 3. Maybe the USB cable is bad? Jan 19 16:01:31 epia last message repeated 3 times [...] Actually, what it looks like is even simpler. The extension cable contains a four-port hub chip (which is the most common commodity chip) and haven't bothered changing the descriptor to tell the computer only one port is actually active. So only one port can be activated, and the others are stubbed out in some evil way. In that case, it should be noisy but harmless. I will do some more testing then. Is there a way to get rid of the messages? - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: USB extension (repeater) cable
Udo van den Heuvel wrote: Actually, what it looks like is even simpler. The extension cable contains a four-port hub chip (which is the most common commodity chip) and haven't bothered changing the descriptor to tell the computer only one port is actually active. So only one port can be activated, and the others are stubbed out in some evil way. In that case, it should be noisy but harmless. I will do some more testing then. Is there a way to get rid of the messages? No, but you don't have to care about them. -hpa - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: USB extension (repeater) cable
On Fri, Jan 19, 2007 at 04:40:34PM +0100, Udo van den Heuvel wrote: > Hello, > > I just tried my shiny new usb extension cable (repeater): > > Jan 19 16:01:17 epia kernel: usb 5-1: new high speed USB device using > ehci_hcd and address 60 > Jan 19 16:01:17 epia kernel: usb 5-1: configuration #1 chosen from 1 choice > Jan 19 16:01:17 epia kernel: hub 5-1:1.0: USB hub found > Jan 19 16:01:17 epia kernel: hub 5-1:1.0: 4 ports detected > Jan 19 16:01:18 epia kernel: hub 5-1:1.0: Cannot enable port 1. Maybe > the USB cable is bad? > Jan 19 16:01:22 epia last message repeated 3 times > Jan 19 16:01:23 epia kernel: hub 5-1:1.0: Cannot enable port 2. Maybe > the USB cable is bad? > Jan 19 16:01:26 epia last message repeated 3 times > Jan 19 16:01:27 epia kernel: hub 5-1:1.0: Cannot enable port 3. Maybe > the USB cable is bad? > Jan 19 16:01:31 epia last message repeated 3 times > > The second cable does the same. > Of course we have just one port on this hub... > Any ideas? Perhaps the kernel is not lying and this cable really is bad? :) Your hardware can not handle this device, there really is nothing that the kernel can do about this. USB extension cables are horrible things, and usually violate the USB spec and do not always work, as you are finding out. Sorry about that. good luck, greg k-h - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
USB extension (repeater) cable
Hello, I just tried my shiny new usb extension cable (repeater): Jan 19 16:01:17 epia kernel: usb 5-1: new high speed USB device using ehci_hcd and address 60 Jan 19 16:01:17 epia kernel: usb 5-1: configuration #1 chosen from 1 choice Jan 19 16:01:17 epia kernel: hub 5-1:1.0: USB hub found Jan 19 16:01:17 epia kernel: hub 5-1:1.0: 4 ports detected Jan 19 16:01:18 epia kernel: hub 5-1:1.0: Cannot enable port 1. Maybe the USB cable is bad? Jan 19 16:01:22 epia last message repeated 3 times Jan 19 16:01:23 epia kernel: hub 5-1:1.0: Cannot enable port 2. Maybe the USB cable is bad? Jan 19 16:01:26 epia last message repeated 3 times Jan 19 16:01:27 epia kernel: hub 5-1:1.0: Cannot enable port 3. Maybe the USB cable is bad? Jan 19 16:01:31 epia last message repeated 3 times The second cable does the same. Of course we have just one port on this hub... Any ideas? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
USB extension (repeater) cable
Hello, I just tried my shiny new usb extension cable (repeater): Jan 19 16:01:17 epia kernel: usb 5-1: new high speed USB device using ehci_hcd and address 60 Jan 19 16:01:17 epia kernel: usb 5-1: configuration #1 chosen from 1 choice Jan 19 16:01:17 epia kernel: hub 5-1:1.0: USB hub found Jan 19 16:01:17 epia kernel: hub 5-1:1.0: 4 ports detected Jan 19 16:01:18 epia kernel: hub 5-1:1.0: Cannot enable port 1. Maybe the USB cable is bad? Jan 19 16:01:22 epia last message repeated 3 times Jan 19 16:01:23 epia kernel: hub 5-1:1.0: Cannot enable port 2. Maybe the USB cable is bad? Jan 19 16:01:26 epia last message repeated 3 times Jan 19 16:01:27 epia kernel: hub 5-1:1.0: Cannot enable port 3. Maybe the USB cable is bad? Jan 19 16:01:31 epia last message repeated 3 times The second cable does the same. Of course we have just one port on this hub... Any ideas? - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: USB extension (repeater) cable
On Fri, Jan 19, 2007 at 04:40:34PM +0100, Udo van den Heuvel wrote: Hello, I just tried my shiny new usb extension cable (repeater): Jan 19 16:01:17 epia kernel: usb 5-1: new high speed USB device using ehci_hcd and address 60 Jan 19 16:01:17 epia kernel: usb 5-1: configuration #1 chosen from 1 choice Jan 19 16:01:17 epia kernel: hub 5-1:1.0: USB hub found Jan 19 16:01:17 epia kernel: hub 5-1:1.0: 4 ports detected Jan 19 16:01:18 epia kernel: hub 5-1:1.0: Cannot enable port 1. Maybe the USB cable is bad? Jan 19 16:01:22 epia last message repeated 3 times Jan 19 16:01:23 epia kernel: hub 5-1:1.0: Cannot enable port 2. Maybe the USB cable is bad? Jan 19 16:01:26 epia last message repeated 3 times Jan 19 16:01:27 epia kernel: hub 5-1:1.0: Cannot enable port 3. Maybe the USB cable is bad? Jan 19 16:01:31 epia last message repeated 3 times The second cable does the same. Of course we have just one port on this hub... Any ideas? Perhaps the kernel is not lying and this cable really is bad? :) Your hardware can not handle this device, there really is nothing that the kernel can do about this. USB extension cables are horrible things, and usually violate the USB spec and do not always work, as you are finding out. Sorry about that. good luck, greg k-h - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
