Author: Himangi Saraogi <himangi774@gmail.com> alloc_bootmem and related functions never return NULL. Thus a NULL test or memset 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: …