tree bb2ab1880fdbaf2f3351470eabe98bf2b7acaf64
parent 3ca17b1f3628f916f79e0ab62f1bf0e45ec9ba92
author jie@chenjie6@huwei.com <jie@chenjie6@huwei.com> 1533946986 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1533957598 -0700

mm/memory.c: check return value of ioremap_prot

ioremap_prot() can return NULL which could lead to an oops.

Link: http://lkml.kernel.org/r/1533195441-58594-1-git-send-email-chenjie6@huawei.com
Signed-off-by: chen jie <chenjie6@huawei.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: chenjie <chenjie6@huawei.com>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>