Thanks to you guys for taking time to reply my question. I just finished the test with kernel 2.5.8. I think as both of you have said , the usb.h has been updated with the definition #define USB_CLASS_CDC_DATA 0x0a Sorry that I should have done more background works. The /proc/bus/usb/devices still gives the interface class of the Lexmark X83 as 16 and (unk.) I: If#= 0 Alt= 0 #EPs= 3 Cls=10(unk. ) Sub=01 Prot=00 Driver=none
I think it's really as Randy pointed out the manufacture misread the spec. or tried to fit it into somewhere. >From my best reading of the www.usb.org, there's no class defined for 0x10 I can not get confirmation from Lexmark whether they misread the spec. despite I sent out the email . long time ago. In function lexmark x83 is similar to HP officejet G85. I checked the package from hpoj.sourceforge.net and it seems that for its support of multifunction devices (scanner & printer) they are just treated as class 7 for printer. Tianjiao >From: Greg KH <[EMAIL PROTECTED]> > > #define USB_CLASS_DATA 10 > >This should have been fixed in 2.4.17-pre3 and 2.5.1-pre8. Have you >tried any kernel after those? On Thu, 18 Apr 2002 [EMAIL PROTECTED] <http://lw7fd.law7.hotmail.msn.com/cgi-bin/compose?curmbox=F000000001&a=cf8e1b776935664fd3e191a49bd53713&mailto=1&[EMAIL PROTECTED]&msg=MSG1019193715.10&start=1683453&len=3818&src=&type=x> wrote: | On Thu, 18 Apr 2002, Tianjiao Zhang wrote: | | | I tested several versions of kernel 2.4-7 up and 2.5.1. The usb system | | has difficulty giving the right interface class for my Lexmark X83 | | (scanner/copier/printer) | | The result " cat /proc/bus/usb/devices " is : | | T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 | | D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 | | P: Vendor=043d ProdID=003d Rev= 0.01 | | S: Product=Lexmark X83 Scan/Print/Copy | | C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr= 48mA | | I: If#= 0 Alt= 0 #EPs= 3 Cls=10(unk. ) Sub=01 Prot=00 Driver=(none) | | ******* oops, that Cls value is in hex, so it's 0x10, decimal 16, and it's still an undefined class value as far as I can tell. Still looks like the manufacturer mis-read the spec., unless someone can find some other class specs & values that we are missing. ~Randy | | E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl= 0ms | | E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl= 0ms | | E: Ad=83(I) Atr=03(Int.) MxPS= 1 Ivl= 8ms | | | | However if I use the lsusb (v0.9, by Thomas Sailer), it gives the | | interface class as 16 Data | | | | I added 0x in the source definition file | | (/linux_source_root/include/linux/usb.h) for those classes ) and it | | gives the result consistent with "lsusb" output. | | I: If#= 0 Alt= 0 #EPs= 3 Cls=10(data ) Sub=01 Prot=00 Driver=(none) | | ( from the kernel, this part of output is in hex format ) | | | | However, in the source code of lsusb, it has the same definition as | | linux_source_root/include/linux/usb.h | | | | #define USB_CLASS_DATA 10 | | Actually now named USB_CLASS_CDC_DATA. | | | : | | It may be strange how the code gets 16 when it is defined as "10" :?. | | | | | | Anyway, shall it be defined as | | #define USB_CLASS_DATA 10 | | or | | #define USB_CLASS_DATA 0x10 | | | | ? | | This web page (http://www.usb.org/developers/defined_class.html |<http://216.33.236.250:80/cgi-bin/linkrd?_lang=EN&lah=e2dceccc6302be5dc2721dd0b06295b6&lat=1019337770&hm___action=http%3a%2f%2fwww%2eusb%2eorg%2fdevelopers%2fdefined_class%2ehtml>) | says that class 10 (decimal) in USB 1.0 was for CDC-Data. | I'm sure that it used to say just "Data" and not CDC-Data. | | Someone may have to search thru more recent USB class | specs to see if class 10 has changed or if class 16 | has been assigned. Have you done that? Anyone? | | My guess is that someone is using class 10 for generic | "data", something that doesn't fit nicely into a USB class. | | | The controller is intel UHCI., and I tried both uhci.o and usb-uhci.o | | modules. The result is the same. | | Sure, that won't matter. _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
