On Thu, 2015-05-21 at 08:42 +0200, Krzysztof Opasiak wrote: > On 05/20/2015 06:42 PM, Bastien Nocera wrote: > > Hey, > > > > After discussing this with Andrzej, I'm no closer to being able to > > get > > this working... > > > > I'm trying to run adbd (the service that would usually run on an > > Android phone in developer mode) on a stock distribution, on a > > device > > that used to run Windows 8 (and now a Fedora). > > > > This is my version of adbd: > > https://github.com/hadess/adbd/ > > > > This is the systemd service file I eventually want to use, but I'm > > running those commands "by hand" right now, and they fail in the > > same > > way. > > > > https://github.com/hadess/adbd/blob/master/adbd.service > > > > I'm getting this error from adbd: > > OPENING /dev/usb-ffs/adb/ep0 [ /dev/usb-ffs/adb/ep0: writing > > strings failed: errno=16] Using ffs-test from tools/usb/ffs-test.c I have the same problem. Writing descriptors works, but writing strings throws -EBUSY. Those are the options used (from /boot/config-4.1.0 -0.rc0.git13.2.fc22.i686) CONFIG_USB_GADGET=m CONFIG_USB_FUNCTIONFS_GENERIC=y CONFIG_USB_GADGET_VBUS_DRAW=2 CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS=2 CONFIG_USB_LIBCOMPOSITE=m CONFIG_USB_F_ACM=m CONFIG_USB_U_SERIAL=m CONFIG_USB_F_SERIAL=m CONFIG_USB_F_OBEX=m CONFIG_USB_F_FS=m CONFIG_USB_CONFIGFS=m CONFIG_USB_CONFIGFS_F_FS=y CONFIG_USB_FUNCTIONFS=m CONFIG_USB_FUNCTIONFS_GENERIC=y CONFIG_USB_G_SERIAL=m > > Which comes from this error message: > > https://github.com/hadess/adbd/blob/master/adb/usb_linux_client.c#L > > 275 > > > > It looks like this can only happen if the gadget FS was already > > registered: > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tre > > e/drivers/usb/gadget/legacy/g_ffs.c#n301 > > > > Any ideas? > > > > Could you please try to use ConfigFS interface instead of using > g_ffs? Could you explain how I would set that up? Is that the way: http://www.spinics.net/lists/linux-usb/msg96121.html ? > I have used this setup some time ago and it worked fine, so it > should be > a good method of checking if adbd is working properly. > > (tools/usb/ffs-aio-example) with g_ffs instead of adbd and see what > happen. ffs-test fails in the same way, as mentioned above. Does one need specific hardware to make this work? This is a tablet, so I usually use a USB OTG adapter to plug in keyboard/mouse/network, but I unplug all this to run the test tool, or adbd. > BTW. > Which kernel version do you use? I'm still on Linus' 4.1.0-rc0, but if anything relevant changed, I can certainly update to a newer version. Cheers -- 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
