diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/unicore32/mm/ioremap.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/unicore32/mm/ioremap.c b/arch/unicore32/mm/ioremap.c index a0840fa0543..bf012b2b71a 100644 --- a/arch/unicore32/mm/ioremap.c +++ b/arch/unicore32/mm/ioremap.c @@ -143,11 +143,13 @@ void __iomem *__uc32_ioremap_pfn_caller(unsigned long pfn, /* * Don't allow RAM to be mapped */ - if (pfn_valid(pfn)) + if (pfn_valid(pfn)) { WARN(1, "BUG: Your driver calls ioremap() on\n" "system memory. This leads to architecturally\n" "unpredictable behaviour, and ioremap() will fail in\n" "the next kernel release. Please fix your driver.\n"); + return NULL; + } type = get_mem_type(mtype); if (!type) |