From d7a5b2ffa1352f0310630934a56aecbdfb617b72 Mon Sep 17 00:00:00 2001
From: Michael Ellerman <michael@ellerman.id.au>
Date: Wed, 25 Jan 2006 21:31:28 +1300
Subject: [PATCH] powerpc: Always panic if lmb_alloc() fails
Currently most callers of lmb_alloc() don't check if it worked or not, if it
ever does weird bad things will probably happen. The few callers who do check
just panic or BUG_ON.
So make lmb_alloc() panic internally, to catch bugs at the source. The few
callers who did check the result no longer need to.
The only caller that did anything interesting with the return result was
careful_allocation(). For it we create __lmb_alloc_base() which _doesn't_ panic
automatically, a little messy, but passable.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
arch/powerpc/sysdev/dart_iommu.c | 2 --
1 file changed, 2 deletions(-)
(limited to 'arch/powerpc/sysdev/dart_iommu.c')
diff --git a/arch/powerpc/sysdev/dart_iommu.c b/arch/powerpc/sysdev/dart_iommu.c
index 977de9db875..929ad2333aa 100644
--- a/arch/powerpc/sysdev/dart_iommu.c
+++ b/arch/powerpc/sysdev/dart_iommu.c
@@ -194,8 +194,6 @@ static int dart_init(struct device_node *dart_node)
* prefetching into invalid pages and corrupting data
*/
tmp = lmb_alloc(DART_PAGE_SIZE, DART_PAGE_SIZE);
- if (!tmp)
- panic("DART: Cannot allocate spare page!");
dart_emptyval = DARTMAP_VALID | ((tmp >> DART_PAGE_SHIFT) &
DARTMAP_RPNMASK);
--
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