Hi Alan, As far as I know, many other devices used this init function in unusual_devs.h for their "ZeroCD" feature, and I think this is more convenient than let device user install utilities like usb_modeswitch and input command manually. Thanks. BR. Meng Zhang -----Original Message----- From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb-owner@xxxxxxxxxxxxxxx] On Behalf Of Alan Stern Sent: Tuesday, February 28, 2012 11:31 PM To: Meng Zhang (张萌) Cc: Josua Dietze; Matthew Dharm; Phil Dibowitz; USB list; USB Storage list; Kernel development list Subject: Re: [PATCH] USB: Mass Storage: Add MediaTek MT6276M device entry On Tue, 28 Feb 2012, Meng Zhang wrote: > from: Meng Zhang <meng.zhang@xxxxxxxxxxxx> > > 1. Add entrys for mediatek MT6276M in unusual_devs.h > > 2. Add init function for mediatek MT6276M to switch to COM port mode > > 3. usb-devices outputs after running with this patch: > T: Bus=02 Lev=01 Prnt=01 Port=05 Cnt=01 Dev#= 48 Spd=480 MxCh= 0 > D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 > P: Vendor=0e8d ProdID=00a1 Rev=02.00 > S: Manufacturer=MediaTek Inc > S: Product=Product > C: #Ifs= 3 Cfg#= 1 Atr=80 MxPwr=500mA > I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=02 Prot=01 Driver=option > I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option > I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option > > 4. patch based on branch: > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > > Signed-off-by: Meng Zhang <meng.zhang@xxxxxxxxxxxx> Nowadays, aren't such things handled in userspace by the usb_modeswitch program rather than in the kernel driver? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html ?韬{.n?????%??檩??w?{.n???{炳???骅w*jg????????G??⒏⒎?:+v????????????"??????