On 18/08/11 22:12, Takashi Iwai wrote:
From: Eliot Blennerhassett eblennerhassett@audioscience.com
Different kernel versions may have different driver versions installed, which in turn require different firmware versions.
If /lib/firmware/$(uname -r) exists, use it in preference to the generic /lib/firmware.
It's no good idea. The installation of the firmware has nothing to do with the running kernel version.
But running version of the kernel module may depend on a particular firmware version.
The firmware in kernel-tree may be installed in the kernel-version specific directory, but it's basically not for external firmware.
External modules are not renamed, they are put in a kernel-versioned directory, so why not the firmware that they need?
On this ubuntu installation, there is all sorts of firmware in /lib/firmware/$(uname -r) and in /lib/firmare Some files are duplicated in these locations, some aren't.
The former is searched before the latter when firmware is requested. Now, if the system has installed firmware in a versioned directory, and the someone 'updates' from alsa-firmware, they won't get the expected result because the old firmware will be used in preference to the new.
In principle, if a firmware is
not?
compatible, you must rename it, e.g. with a version suffix, etc. Or, if a firmware is backward compatible, we may keep using the same name.
-- Eliot