Torvalds tree: please backport (also cc: stable@kernel too would be nice)
commit 8d21547d3c9c3bc653261f26d554cfabc4a083de
Author: Bernie Thompson <[email protected]>
Date: Thu Mar 1 17:35:48 2012 -0800
udlfb: fix hcd_buffer_free panic on unplug/replug
Fix race conditions with unplug/replug behavior, in particular
take care not to hold up USB probe/disconnect for long-running
framebuffer operations and rely on usb to handle teardown.
Fix for kernel panic reported with new F17 multiseat support.
Reported-by: Kay Sievers <[email protected]>
Signed-off-by: Bernie Thompson <[email protected]>
** Description changed:
if I have my mimo 720 F (display link graphics) plugged in while booting
then I get the above error message and my kernel hangs. this is precise
x86-64
It looks like there is a fix in the upstream, upstream source
http://git.plugable.com/gitphp/index.php?p=udlfb&a=blobdiff&h=aa2225d3f62f18a3b8f718f1d5c2507fe428a649&hp=221f4bfc1cf119f96b3cad385caef182f8d9a4ea&hb=8757f62c2086ececdcf34a073b48f37e503d16d2&f=udlfb.c
+
+ Complete patch in torvalds tree, which includes above.
+
+ commit id 8d21547d3c9c3bc653261f26d554cfabc4a083de
** Description changed:
if I have my mimo 720 F (display link graphics) plugged in while booting
then I get the above error message and my kernel hangs. this is precise
x86-64
It looks like there is a fix in the upstream, upstream source
http://git.plugable.com/gitphp/index.php?p=udlfb&a=blobdiff&h=aa2225d3f62f18a3b8f718f1d5c2507fe428a649&hp=221f4bfc1cf119f96b3cad385caef182f8d9a4ea&hb=8757f62c2086ececdcf34a073b48f37e503d16d2&f=udlfb.c
Complete patch in torvalds tree, which includes above.
commit id 8d21547d3c9c3bc653261f26d554cfabc4a083de
+
+ which made it in to v3.3-rc5
** Description changed:
if I have my mimo 720 F (display link graphics) plugged in while booting
then I get the above error message and my kernel hangs. this is precise
x86-64
It looks like there is a fix in the upstream, upstream source
http://git.plugable.com/gitphp/index.php?p=udlfb&a=blobdiff&h=aa2225d3f62f18a3b8f718f1d5c2507fe428a649&hp=221f4bfc1cf119f96b3cad385caef182f8d9a4ea&hb=8757f62c2086ececdcf34a073b48f37e503d16d2&f=udlfb.c
Complete patch in torvalds tree, which includes above.
commit id 8d21547d3c9c3bc653261f26d554cfabc4a083de
which made it in to v3.3-rc5
+
+
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=8d21547d3c9c3bc653261f26d554cfabc4a083de
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https://bugs.launchpad.net/bugs/955665
Title:
"udlfb: device_create_bin_file failed -22" boot hang with displaylink
graphics
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