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sgi-xpc: Remove NULL pointer dereference. 

If the bte copy fails, the attempt to retrieve payloads merely returns a
null pointer deref and not NULL as was expected.

Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Dean Nelson <dcn@sgi.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Robin Holt 2009-01-29 14:25:07 -08:00 committed by Linus Torvalds
parent 69b3bb65fa
commit 17e2161654
1 changed files with 6 additions and 4 deletions
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10
drivers/misc/sgi-xp/xpc_sn2.c
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@ -1957,11 +1957,13 @@ xpc_get_deliverable_payload_sn2(struct xpc_channel *ch)
msg = xpc_pull_remote_msg_sn2(ch, get);
DBUG_ON(msg != NULL && msg->number != get);
DBUG_ON(msg != NULL && (msg->flags & XPC_M_SN2_DONE));
DBUG_ON(msg != NULL && !(msg->flags & XPC_M_SN2_READY));
if (msg != NULL) {
DBUG_ON(msg->number != get);
DBUG_ON(msg->flags & XPC_M_SN2_DONE);
DBUG_ON(!(msg->flags & XPC_M_SN2_READY));
payload = &msg->payload;
payload = &msg->payload;
}
break;
}