diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/pci-dma_32.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/pci-dma_32.c b/arch/x86/kernel/pci-dma_32.c index 453b4bda271..55ab3c874d8 100644 --- a/arch/x86/kernel/pci-dma_32.c +++ b/arch/x86/kernel/pci-dma_32.c @@ -14,6 +14,10 @@ #include <linux/module.h> #include <asm/io.h> +/* For i386, we make it point to the NULL address */ +dma_addr_t bad_dma_address __read_mostly = 0x0; +EXPORT_SYMBOL(bad_dma_address); + struct dma_coherent_mem { void *virt_base; u32 device_base; |