Crash at boot on blaze board on wlan driver init

[Sebastien JAN]

When booting official maverick images on OMAP4 blaze board, with standard wlan packages installed (tiwlan-wl1271*), the blaze board crashes on wlan driver init.

The kernel triggers a generic wlan uevent on wlan device registration. The tiwlan-wl1271 package is not compatible with blaze board (different wlan chip on blaze), and causes a crash when loaded on blaze board.

Since wlan cannot be supported on blaze boards (no wlan driver package available as of today), the wlan device shall only be registered on pandaboard.

[Sebastien JAN (sebjan)]

Attached patch fixes this issue by registering the wlan device only on pandaboard.

[Ricardo Salveti (rsalveti)]

This is not the proper fix, but as we don't have any wlan driver for blaze, I believe it's a valid workaround. At least with this patch we're able to use the same rootfs at both Panda and Blaze.

[Ricardo Salveti (rsalveti)]

Commited at http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-maverick.git;a=commit;h=ef436ef3cd34f5def720f3735900af36130ad37a

[Martin Pitt (pitti)]

Accepted linux-ti-omap4 into maverick-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

[Ricardo Salveti (rsalveti)]

Sebastien, were you able to test the proposed package with the fix? Thanks.

[Sebastien JAN (sebjan)]

Thanks for the reminder :)

I just tested with the 2.6.35-903-omap4 #17-Ubuntu kernel.
 - on Blaze ES2.1: The wlan uevent is not triggered and the wlan drivers are not loaded. This is the expected behavior with this patch.
 - on panda ES2.0: the wlan drivers are loaded properly

=> ok for me!

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-ti-omap4 - 2.6.35-903.17

---------------
linux-ti-omap4 (2.6.35-903.17) maverick-proposed; urgency=low

  [ Upstream Kernel Changes ]

  * wlan: register wlan device only on pandaboard
    - LP: #665039
 -- Tim Gardner <email address hidden> Fri, 22 Oct 2010 14:14:45 +0100

[Martin Pitt (pitti)]

copied to natty as well.