[uml-user] [PATCH] UML: Eliminate NULL test after alloc_bootmem_low_pages

[Himangi S. <him...@gm...>]

alloc_bootmem and related functions never return NULL. Thus a NULL
test after calls to these functions is unnecessary.

The following Coccinelle semantic patch was used for making the change:

@@
expression E;
statement S;
@@

E = \(alloc_bootmem\|alloc_bootmem_low\|alloc_bootmem_pages\|alloc_bootmem_low_pages\)(...)
... when != E
- if (E == NULL) S

Signed-off-by: Himangi Saraogi <him...@gm...>
Acked-by: Julia Lawall <jul...@li...>
---
 arch/um/kernel/physmem.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index 30fdd5d..fb041cf 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -43,8 +43,6 @@ int __init init_maps(unsigned long physmem, unsigned long iomem,
 	total_len = phys_len + iomem_len + highmem_len;
 
 	map = alloc_bootmem_low_pages(total_len);
-	if (map == NULL)
-		return -ENOMEM;
 
 	for (i = 0; i < total_pages; i++) {
 		p = &map[i];
-- 
1.9.1