fix alpha atkbd oops

When called from

if (atkbd_reset)
if (atkbd_command(atkbd, NULL, ATKBD_CMD_RESET_BAT))

in atkbd_probe, we'll crash trying to write back the results into the null pointer.

The interface to atkbd_command seems more sensible to allow a null pointer to indicate that the caller doesn't care about the received data than to supply a dummy pointer here.

r~

You can import this changeset into BK by piping this whole message to:
'| bk receive [path to repository]' or apply the patch as usual.

===================================================================

[email protected], 2002-10-10 17:28:04-07:00, [email protected]
Avoid oops on systems that set atkbd_reset.

 atkbd.c |    5 +++--
 1 files changed, 3 insertions, 2 deletions

diff -Nru a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
@@ -244,8 +244,9 @@
 
 	while (atkbd->cmdcnt && timeout--) udelay(10);
 
-	for (i = 0; i < receive; i++)
-		param[i] = atkbd->cmdbuf[(receive - 1) - i];
+	if (param)
+		for (i = 0; i < receive; i++)
+			param[i] = atkbd->cmdbuf[(receive - 1) - i];
 
 	if (atkbd->cmdcnt) 
 		return (atkbd->cmdcnt = 0) - 1;

===================================================================

This BitKeeper patch contains the following changesets:
+
## Wrapped with gzip_uu ##

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MV-;N'U)[BC$-=T9RAK-13T:8YWU%)"&"$R4QY>,11X'9T>^:^6(8((Q)CEG M/6$3EJ%3($G.QH!I2G!80/*"C@O,8YP7&,-3N+!/(,;H+?S?-DY0!<=KHR48 MLW)@6G;YU7CP(?"X,+HA+\IY1>KPGN"/@+A.>=H]CA;%/_EA16&!W"VGSU MJJJ/_*U>ZNO:)UUUFU3?>FGU5MQ4MZO.IS=J4QIA93KP2*K[QG+,",-CCGLR M&1/2EZ6<*(J5)&PTR=F38WP)>-LB$;SC/:<XM%DL-*?SVW]]8KM/&"[SJD7 M8H86)B0HG^&>$S)F@_-H]K/Q\B*CSQJ/04Q?Q7CGC0X6"[@*=.L-K(05#>@% MA&WMH.V6RZWC[D4XA]C>#BLX:/:,'O_@R5/*<Z#H0Z'#$6!Q>[9P]%T<)8 MV-4P!7P&MZ594*Y</'_OXV'@V9E_HJI`P,XL.JD66WN-S]D0HQD+WPT%<' :C[^PJE;5C>N:*::+;"091]\!UPXWQ2L%````
`
end

Thanks, applied.

Vojtech Pavlik
SuSE Labs