On Thu, 2015-06-11 at 11:19 +0200, Jean-Christian de Rivaz wrote: > Le 11. 06. 15 10:48, Bjørn Mork a écrit : > > Jean-Christian de Rivaz <[email protected]> writes: > > > >>> In my experience this is not true. Many vendors, many of them no-name > >>> Asian ones, release many devices each year, especially when rebranding > >>> the same device between network operators. Even in the United States > >>> there can be 3 or 4 models of the same hardware, differentiated only by > >>> firmware and external branding, but with different VID/PID combinations. > >> Please provides real substantial example. > > Go look it up in the modem database you have access to. > > Why? You are the one pretending that this reality exists by your > experience, not me! > > > You can use almost any modem present in any laptop as example, or any > > modem marketing name from any of the major asian vendors. They will > > *all* have a number of different VID/PID combinations. If you should > > happen to find an exception from this rule, then that would be a truly > > interesting device. > > > > I never pretending that that there was just a few VID/PID combinations. > I do pretend that the number of combinations is not completely out of > control like you try to present.
I guess our definitions of out-of-control are different then :) The FCC database lists ~3396 FCCIDs, 164 of which have been granted so far in 2015 alone, that are: - PCS spectrum (eg 1850 - 1910mhz) - Part 24E - Class PCB - PCS Licensed Transmitter (not held to face or worn) - original grants - registered from 2003 - today That does include some tablets, MiFis, and M2M devices. So for a more representative sample I did a query of all the FCC Grantee codes of all the WWAN devices I have which gives me a total of 1039 devices from 24 different manufacturers. These are very restrictive queries because: 1) they do not include devices *not* registered with the FCC, eg many European/Asian/African devices that aren't intended for sale in the US 2) they only included devices registered for the US/Americas PCS band (1900MHz) 3) the 1039 query only includes a couple of common manufacturers 4) this is for the FCC ID, not the VID/PID of the device. Many devices that are re-branded by OEMs (dell, quanta, HP, Acer, etc) will change the VID/PID for the same hardware. So a large number of these devices will have multiple VID/PIDs. I also have 15+ devices (from 6 or 7 manufacturers) that have no FCC registration because they were never intended for sale in the US. There are also many whitebox devices. We have 1118 unique USB IDs in option+sierra+qcaux+qcserial+qmi_wwan kernel drivers. Which means we're not even close to covering the USB IDs of just US registered devices, and that doesn't even cover the devices that are CDC-ACM, MBIM, or NCM and don't need IDs. Dan _______________________________________________ systemd-devel mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/systemd-devel
