Date: Sat, 12 Dec 2020 22:30:21 +0000 From: bugzilla-noreply@freebsd.org To: usb@FreeBSD.org Subject: [Bug 251784] USB_DO_REQUEST ERR#5 'Input/output error' for 0x0b05:0x18f3 ASUS AURA LED Controller Message-ID: <bug-251784-19105-vEpW3ZKxEL@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-251784-19105@https.bugs.freebsd.org/bugzilla/> References: <bug-251784-19105@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=251784 --- Comment #7 from Greg V <greg@unrelenting.technology> --- So, turns out libusb does its own descriptor parsing, I can fix this in libusb: --- i/lib/libusb/libusb20_desc.c +++ w/lib/libusb/libusb20_desc.c @@ -208,10 +208,9 @@ libusb20_parse_config_desc(const void *config_desc) } /* * Sometimes USB devices have corrupt interface - * descriptors and we need to overwrite the provided - * interface number! + * descriptors. Do not overwrite the provided + * interface number though! */ - last_if->desc.bInterfaceNumber = niface - 1; last_if->extra.ptr = LIBUSB20_ADD_BYTES(ptr, ptr[0]); last_if->extra.len = 0; last_if->extra.type = LIBUSB20_ME_IS_RAW; …aaand huh. This changes the number in usbconfig dump_all_desc too. TIL usbconfig uses libusb :) Now, this shouldn't fix it for uhid/hidraw usage (and I'd like to eventually get hidapi-hidraw working maybe) I guess? But I can't find 'bInterfaceNumber =' in kernel code at all. Who assigns that? -- You are receiving this mail because: You are the assignee for the bug.help
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