Commit 9560aea4 authored Mar 22, 2008 by Grant Likely Committed by Paul Mackerras Mar 24, 2008

[POWERPC] mpc5200: Fix null dereference if bestcomm fails to initialize



If the bestcomm initialization fails, calls to the task allocate
function should fail gracefully instead of oopsing with a NULL deref.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>

parent b8c19eb1

arch/powerpc/sysdev/bestcomm/bestcomm.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -52,6 +52,10 @@ bcom_task_alloc(int bd_count, int bd_size, int priv_size)
		int i, tasknum = -1;
		struct bcom_task *tsk;

		/* Don't try to do anything if bestcomm init failed */
		if (!bcom_eng)
		return NULL;

		/* Get and reserve a task num */
		spin_lock(&bcom_eng->lock);