Hi, On Thu, May 28, 2015 at 12:23:33PM +0200, Vladimir 'φ-coder/phcoder' Serbinenko wrote: > commit 6d1e47017e322b09ee3c0d42e7c05babfc2a4cc7 > Author: Vladimir Serbinenko <phcoder@xxxxxxxxx> > Date: Tue May 26 21:35:06 2015 +0200 > > dbgp: Supply config descriptor and accept set config command. > > This descriptor and commands are part of core USB specification and every > USB device should have one. > > When g_dbgp is used in early printk or in coreboot through EHCI debug those > descriptors are never read and hence this doesn't create a problem. However for > coreboot payloads with full USB stack or Linux once booted those descriptors > are essential, so without them both GRUB-as-payload and Linux refuse to > recognize it. > > Tested and works as expected in coreboot, GRUB and early_printk=dbgp. > Booted Linux recognizes and it works the same way as Net20DC if I change USBID. > > Signed-off-by: Vladimir Serbinenko <phcoder@xxxxxxxxx> why attached ? Please resend it properly. Patches should be the email body, not an attachment. -- balbi
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