| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 22 Feb 2010 19:14:32 +0000 From: Matthew Garrett <mjg59@...f.ucam.org> To: Alan Stern <stern@...land.harvard.edu> Cc: Anssi Hannula <anssi.hannula@....fi>, Oliver Neukum <oliver@...kum.org>, dvomlehn@...co.com, gregkh@...e.de, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [REGRESSION] "USB: use kfifo to buffer usb-generic serial writes" causes gobi_loader to hang On Mon, Feb 22, 2010 at 02:10:33PM -0500, Alan Stern wrote: > On Mon, 22 Feb 2010, Anssi Hannula wrote: > > Does this mean a tty interface is ill-suited for the microcode upload, and > > instead qcserial should use the kernel's generic microcode upload mechanism or > > the userspace should use libusb to do it? > > I don't know. Didn't the old successful code use a tty interface? Yes. The kfifo changes have caused some sort of alteration in behaviour. > > Any idea what could be causing the hang, then? > > No idea, unless it's the device. Once the device hangs, it then tends to refuse any input until power cycled. So it's clearly getting into some sort of undefined state, though whether that's because it only gets sent half of its firmware (ie, the hang occurs and as a result the hardware dies) or whether it's causing the hang by dying is unclear. -- Matthew Garrett | mjg59@...f.ucam.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists