As of 2.6.22 the kernel doesn't recognize the i8042 keyboard/mouse
controller
on the PegasosPPC. This is because of a feature/bug in the OF device
tree:
the "device_type" attribute is an empty string instead of "8042" as the
kernel expects. This patch (against 2.6.22.1) adds a secondary
detection
which looks for a device whose *name* is "8042" if there is no device
whose
*type* is "8042".
Signed-off-by: Alan Curry <[email protected]>
--- arch/powerpc/kernel/setup-common.c.orig 2007-07-24
19:04:17.000000000 -0500
+++ arch/powerpc/kernel/setup-common.c 2007-07-24 19:06:36.000000000
-0500
@@ -487,6 +487,10 @@ int check_legacy_ioport(unsigned long ba
switch(base_port) {
case I8042_DATA_REG:
np = of_find_node_by_type(NULL, "8042");
+ /* Pegasos has no device_type on its 8042 node, look for the
+ * name instead */
+ if (!np)
+ np = of_find_node_by_name(NULL, "8042");
[I know it already got merged, I'm behind on mail, but anyway...]
Could board-specific quirks like this please always include a
check for that board? Or, even better, do a fixup in the
bootwrapper.
In this case the workaround won't likely trigger on the wrong
boards, but "just a little bit" more dangerous workarounds
_will_, and the law of big numbers works against us...
Segher
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