On Wed, Apr 22, 2015 at 02:38:00PM +0200, Greg Kroah-Hartman wrote: > On Wed, Apr 22, 2015 at 01:20:38PM +0200, Johan Hovold wrote: > > On Wed, Apr 22, 2015 at 12:14:05PM +0200, Jason A. Donenfeld wrote: > > > Samsung has just released a portable USB3 SSD, coming in a very small > > > and nice form factor. It's USB ID is 04e8:8001, which unfortunately is > > > already used by the pl2303 USB serial driver and the Palm Visor driver > > > for the Samsung I330 phone cradle. Having pl2303 or visor pick up this > > > device ID results in conflicts with the usb-storage driver, which > > > handles the newly released portable USB3 SSD. > > > > First of all, the device should not be claimed by both pl2303 and visor. > > This predates the git, but it looks like the device id should simply be > > removed from pl2303. Care to do that as a preparatory patch? > > It was added back in 2004 in the 2.4.26 kernel release. Petr Slansky > asked me to add it, and sent a patch as he had the device. > > But before that, back in 2003 Adam emailed saying that the visor driver > worked with the device, and sent me a patch for it. I didn't notice the > duplicate ids for well over a decade now :( > > I'd bet this is really a pl2303 device, given that the visor driver was > just a "dumb" pipe to the device and the pilot sync tools never cared > about baud rates and the like, so odds are the visor entry should be > removed. My thinking was the other way around; that a dumb, generic device (visor) would never work with a more specialised driver (pl2303). The opposite could work though as the pl2303 setup commands would simply fail, but the bulk in/out layout appears to be the same and should work with a dumb device. I double checked just now with a pl2303 HX device, and I can't seem to get anything through with the default settings (visor or generic driver) in loopback. Note that there's another Samsung SPH-I500 Palm OS phone handled by visor as well. > Petr, do you still have this device? Is it still really a pl2303 > device? Let's see if we get some feedback first. But unless someone thinks my reasoning above is flawed we could try removing it from pl2303 a little later either way. Thanks, Johan -- 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
